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Gia Certified Loose Sapphire

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GIA Certified Oval Purple-Pink Loose Sapphire
Located in Laguna Beach, CA
5.11 carat oval shape, slightly purplish-pink sapphire. GIA graded. Natural Sapphire. No
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

2.39 Carat Unheated Madagascar Blue Sapphire, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This beautiful 2.39 carat unheated loose blue sapphire is absolutely stunning! It is a perfectly
Category

21st Century and Contemporary Malagasy Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Unheated 8.63 Carat Blue Green Sapphire, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This 8.63 carat unheated sapphire has a beautiful, rich bluish-green color and is exceptionally
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Green Sapphire

Unheated .75 Carat Padparadscha Sapphire, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
celebrate Pantone's 2024 Color of The Year, fuzzy peach! Padparadscha sapphires are extremely rare, highly
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Padparadscha Sapphire

2.11 Carat Pink Sapphire Oval, Unset Loose Gemstone, GIA Certified
Located in Los Angeles, CA
This sapphire is an eye catching, vibrant purplish pink color measuring 9.09 x 6.70 x 3.39
Category

21st Century and Contemporary Unknown Artisan Loose Gemstones

Materials

Sapphire, Pink Sapphire

6.52 Carat Blue Sapphire Oval, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This spectacular 6.52 carat blue sapphire is a world class beauty! It is an extraordinarily, vivid
Category

21st Century and Contemporary Malagasy Artisan Loose Gemstones

Materials

Blue Sapphire, Sapphire

Unheated 10.78 Carat Ceylon Yellow Sapphire, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This rare, unheated yellow sapphire is the color of sunshine! Sapphires are routinely heated to
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Sapphire, Yellow Sapphire

8.61 Carat Purple Sapphire Octagon, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
A large, octagonal purple sapphire is a bit like a twinned rainbow - people have heard they exist
Category

21st Century and Contemporary Malagasy Artisan Loose Gemstones

Materials

Sapphire, Purple Sapphire

4.18 Carat Unheated Natural Blue Sapphire Pear, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
sapphire that is certified "unheated" is rare and particularly valuable. This gorgeous pear shape has
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Unheated 2.14 Carat Purple Sapphire Octagon, Loose Gemstone, GIA Certified ...A
By Sarosi By Timeless Gems
Located in Los Angeles, CA
A sapphire with such exquisite color as this should be named the "Orchid Princess!" It is a
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Sapphire, Purple Sapphire

Unheated 3.32 Carat Ceylon Blue Sapphire, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
, most sapphires on the market have been heated to improve their appearance. A certified, unheated Ceylon
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Blue Sapphire, Sapphire

Unheated 3.11 Carat Purple Pink Sapphire, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
While sapphires are routinely heated to improve their color, this 3.11 carat unheated, lively pink
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Pink Sapphire

Unheated 7.16 Carat Yellow Sapphire Oval, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This 7.16 carat unheated yellow sapphire oval is the color of refreshing lemonade! Most yellow
Category

21st Century and Contemporary Unknown Artisan Loose Gemstones

Materials

Sapphire, Yellow Sapphire

Unheated 1.39 Carat Burmese Pink Sapphire, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This 1.39 carat vivid pink sapphire is magnificent! It is an unheated, perfectly symmetrical oval
Category

21st Century and Contemporary Burmese Artisan Loose Gemstones

Materials

Sapphire, Pink Sapphire

Unheated 7.12 Carat Burmese Blue Sapphire Cushion, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This 7.12 carat, unheated Burmese blue sapphire is extraordinarily rare! Burma, now referred to as
Category

21st Century and Contemporary Burmese Artisan Loose Gemstones

Materials

Blue Sapphire, Sapphire

Unheated 3.50 Carat Color Change Sapphire, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
It is very rare to find a fine sapphire that is an unheated natural color, and even more exciting
Category

21st Century and Contemporary Malagasy Artisan Loose Gemstones

Materials

Sapphire, Purple Sapphire

5.57 Carat Pear Shaped Pink Sapphire, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
If you're looking for a perfectly proportioned, hot pink sapphire to set in a piece of jewelry
Category

21st Century and Contemporary Malagasy Artisan Loose Gemstones

Materials

Sapphire, Pink Sapphire

5.77 Carat Royal Blue Sapphire Cushion, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This extremely fine cushion-shaped blue sapphire is what dreams are made of. This exquisite gem
Category

21st Century and Contemporary Malagasy Artisan Loose Gemstones

Materials

Blue Sapphire, Sapphire

2.19 Carat Cornflower Blue Sapphire Oval, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This deep "cornflower" blue sapphire is brilliant and lively, exhibiting a classic shade of this
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Loose Sapphire Loose Gemstone - Round 1.37ct GIA Purple Solitaire
Located in Greensboro, NC
Treatment: No Heat Carat(s): 1.37ct Cut: Round Color: Purple Certified by: GIA Report Number
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Unheated 5.18 Carat Cinnamon Orange Sapphire Pear, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
selection of loose fancy colored sapphires in our inventory. Please inquire for details.
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Sapphire

GIA Certified 5.94 Carat Oval Shape Natural Pink Purple Sapphire Loose Gemstone
Located in Trumbull, CT
GIA certified 5.94 carat oval shape natural pink purple sapphire is a truly breathtaking loose
Category

21st Century and Contemporary African Artisan Loose Gemstones

Materials

Sapphire, Purple Sapphire

GIA Certified No Heat Natural 18.18 Carats Blue Star Sapphire Loose Stone
By OGI Ltd
Located in New York, NY
gemstone grading authority. The fact that the sapphire is GIA-certified adds credibility and assures
Category

20th Century Sri Lankan Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire, Star Sapphire

Loose Sapphire - Oval 1.36ct GIA Blue Solitaire
Located in Greensboro, NC
Treatment: Heating Carat(s): 1.36ct Cut: Oval Color: Blue Origin: Madagascar Certified by: GIA
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Loose Sapphire - Oval 1.00ct GIA Royal Blue Solitaire
Located in Greensboro, NC
Treatment: Heating Carat: 1.00ct Cut: Oval Color: Royal Blue Origin: Madagascar Certified by: GIA
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Mesmerizing 7.35ct Sapphire Gemstone - GIA Certified
Located in רמת גן, IL
Mesmerizing 7.35ct Sapphire Gemstone - GIA Certified This magnificent 7.35-carat yellow Sapphire
Category

2010s Israeli Loose Gemstones

Materials

Sapphire

Mesmerizing 12.79ct Sapphire Gemstone - GIA Certified
Located in רמת גן, IL
, making this sapphire a breathtaking statement piece. GIA-certified, this stunning sapphire is a once-in-a
Category

2010s Israeli Loose Gemstones

Materials

Sapphire

Captivating 2.78ct Sapphire Gemstone - GIA Certified
Located in רמת גן, IL
jewelry creation. Certified by the GIA, this sapphire guarantees authenticity and exceptional quality
Category

2010s Israeli Loose Gemstones

Materials

Sapphire

Radiant 3.23ct Sapphire Gemstone - GIA Certified
Located in רמת גן, IL
perfect centerpiece for a custom jewelry piece. Certified by GIA, this sapphire is a beautiful and rare
Category

2010s Israeli Loose Gemstones

Materials

Sapphire

Stunning 3.63ct Sapphire Gemstone - GIA Certified
Located in רמת גן, IL
This exquisite 3.63-carat orangy yellow sapphire captivates with its vibrant and unique hue
Category

2010s Israeli Loose Gemstones

Materials

Sapphire

10.77ct Oval Cabochon Blue Sapphire GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Loose Gemstones

Materials

Blue Sapphire, Sapphire, Star Sapphire

10.77ct Oval Cabochon Blue Sapphire GIA Certified
10.77ct Oval Cabochon Blue Sapphire GIA Certified
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W 0.53 in D 0.25 in L 0.42 in
GIA Certified 3.46 Carats Blue Sapphire
Located in Los Angeles, CA
carats, certified by a GIA Report. The oval-shaped beauty, measuring 9.63 x 7.55 x 5.22 mm, boasts a
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

GIA Certified 3.46 Carats Blue Sapphire
GIA Certified 3.46 Carats Blue Sapphire
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W 0.3 in D 0.21 in L 0.38 in
0.79ct Cushion Pink Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Pink Sapphire, Sapphire

0.79ct Cushion Pink Sapphire GIA Certified Madagascar
0.79ct Cushion Pink Sapphire GIA Certified Madagascar
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W 0.26 in D 0.13 in L 0.17 in
0.59ct Oval Pink Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Pink Sapphire, Sapphire

0.59ct Oval Pink Sapphire GIA Certified Madagascar
0.59ct Oval Pink Sapphire GIA Certified Madagascar
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W 0.23 in D 0.12 in L 0.18 in
GIA Certified Royal Blue Sapphire Gia Certified and Stated Unheated Kashmir Gem
Located in Jupiter, FL
sapphire is unheated GIA certified and actually stated in the GIA report as "The color appearance of this
Category

21st Century and Contemporary Art Nouveau Loose Gemstones

Materials

Blue Sapphire

Captivating 3.88ct Star Sapphire Gemstone - GIA Certified
Located in רמת גן, IL
Captivating 3.88ct Star Sapphire Gemstone - GIA Certified This breathtaking 3.88-carat Star
Category

2010s Israeli Loose Gemstones

Materials

Star Sapphire

0.99 ct Round Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Sapphire

0.99 ct Round Sapphire GIA Certified Madagascar
0.99 ct Round Sapphire GIA Certified Madagascar
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W 0.23 in D 0.16 in L 0.22 in
0.99 Carat Round Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Sapphire

0.99 Carat Round Sapphire GIA Certified Madagascar
0.99 Carat Round Sapphire GIA Certified Madagascar
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W 0.23 in D 0.16 in L 0.22 in
2.38ct Cushion Blue Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Blue Sapphire

2.38ct Cushion Blue Sapphire GIA Certified Madagascar
2.38ct Cushion Blue Sapphire GIA Certified Madagascar
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W 0.33 in D 0.18 in L 0.25 in
2.42ct Pear Blue Sapphire GIA Certified Thailand
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Thai Loose Gemstones

Materials

Blue Sapphire

2.42ct Pear Blue Sapphire GIA Certified Thailand
2.42ct Pear Blue Sapphire GIA Certified Thailand
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W 0.36 in D 0.19 in L 0.29 in
1.64ct Pear Blue Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Blue Sapphire

1.64ct Pear Blue Sapphire GIA Certified Madagascar
1.64ct Pear Blue Sapphire GIA Certified Madagascar
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W 0.36 in D 0.16 in L 0.24 in
1.28ct Round Blue Sapphire GIA Certified Cambodia
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Cambodian Loose Gemstones

Materials

Blue Sapphire

1.28ct Round Blue Sapphire GIA Certified Cambodia
1.28ct Round Blue Sapphire GIA Certified Cambodia
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W 0.25 in D 0.17 in L 0.25 in
2.39ct Pear Blue Sapphire GIA Certified Thailand
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Thai Loose Gemstones

Materials

Blue Sapphire

2.39ct Pear Blue Sapphire GIA Certified Thailand
2.39ct Pear Blue Sapphire GIA Certified Thailand
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W 0.43 in D 0.14 in L 0.35 in
5.1ct Oval Cabochon Blue Star Sapphire GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Star Sapphire The GIA report reads as follows: GIA Report
Category

2010s Loose Gemstones

Materials

Star Sapphire, Sapphire, Blue Sapphire

5.1ct Oval Cabochon Blue Star Sapphire GIA Certified
5.1ct Oval Cabochon Blue Star Sapphire GIA Certified
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W 0.37 in D 0.26 in L 0.32 in
10.83ct Oval Cabochon Blue Star Sapphire GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Star Sapphire The GIA report reads as follows: GIA Report
Category

2010s Loose Gemstones

Materials

Star Sapphire, Sapphire, Blue Sapphire

10.83ct Oval Cabochon Blue Star Sapphire GIA Certified
10.83ct Oval Cabochon Blue Star Sapphire GIA Certified
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W 0.53 in D 0.3 in L 0.39 in
11.99ct Oval Cabochon Blue Star Sapphire GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Star Sapphire The GIA report reads as follows: GIA Report
Category

2010s Loose Gemstones

Materials

Star Sapphire, Sapphire, Blue Sapphire

11.99ct Oval Cabochon Blue Star Sapphire GIA Certified
11.99ct Oval Cabochon Blue Star Sapphire GIA Certified
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W 0.45 in D 0.38 in L 0.42 in
1.73ct Cushion Purple-Pink Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Pink Sapphire, Sapphire, Purple Sapphire

1.73ct Cushion Purple-Pink Sapphire GIA Certified Madagascar
1.73ct Cushion Purple-Pink Sapphire GIA Certified Madagascar
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W 0.26 in D 0.19 in L 0.23 in
3.08 Carat GIA Certified Unheated Purplish Pink Sapphire
Located in Great Neck, NY
GIA Certified Oval Purplish Pink Sapphire weighing 3.08 carats Measuring (9.55x7.58x5.22) mm No
Category

2010s Loose Gemstones

Materials

Pink Sapphire, Purple Sapphire

3.08 Carat GIA Certified Unheated Purplish Pink Sapphire
3.08 Carat GIA Certified Unheated Purplish Pink Sapphire
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W 0.3 in D 0.21 in L 0.38 in
1.10 Carat Cushion Teal Sapphire GIA Certified Unheated
Located in San Francisco, CA
This 1.10-carat Cushion Teal Blue GIA Certified Natural Sapphire was selected by our experts for
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire, Green Sapphire

4.36 Carat Cushion Blue Sapphire GIA Certified Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Unknown Loose Gemstones

Materials

Blue Sapphire, Sapphire

4.36 Carat Cushion Blue Sapphire GIA Certified Unheated
4.36 Carat Cushion Blue Sapphire GIA Certified Unheated
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W 0.34 in D 0.26 in L 0.33 in
3.42ct Oval Greenish Blue Sapphire GIA Certified Nigeria
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Nigerian Loose Gemstones

Materials

Blue Sapphire, Sapphire

3.42ct Oval Greenish Blue Sapphire GIA Certified Nigeria
3.42ct Oval Greenish Blue Sapphire GIA Certified Nigeria
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W 0.36 in D 0.24 in L 0.31 in
11.29ct Oval Cabochon Blue Star Sapphire GIA Certified
Located in Toronto, Ontario
The GIA report reads as follows: GIA Report Number: 2225841179 Shape: Oval Cutting Style: Double
Category

2010s Unknown Loose Gemstones

Materials

Star Sapphire, Sapphire, Blue Sapphire

11.29ct Oval Cabochon Blue Star Sapphire GIA Certified
11.29ct Oval Cabochon Blue Star Sapphire GIA Certified
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W 0.45 in D 0.39 in L 0.37 in
1.16 Carat Round Sapphire GIA Certified, Sri Lankan
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

1.16 Carat Round Sapphire GIA Certified, Sri Lankan
1.16 Carat Round Sapphire GIA Certified, Sri Lankan
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W 0.24 in D 0.18 in L 0.24 in
3.87ct Oval Greenish Blue Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire

3.87ct Oval Greenish Blue Sapphire GIA Certified Madagascar
3.87ct Oval Greenish Blue Sapphire GIA Certified Madagascar
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W 0.31 in D 0.22 in L 0.44 in
GIA Certified 3.48 Carat Rare Pinkish Purple Sapphire
Located in San Francisco, CA
This 3.59 carat Cushion Antique shaped GIA Certified Pinkish Purple Sapphire was selected by our
Category

20th Century Sri Lankan Loose Gemstones

Materials

Sapphire, Pink Sapphire, Purple Sapphire

GIA Certified 3.02 Carats Heated Pink Sapphire
Located in Los Angeles, CA
This octagon shaped Pink Sapphire has been modified to reveal an unmatched brilliance. A gemstone
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Pink Sapphire

GIA Certified 3.02 Carats Heated Pink Sapphire
GIA Certified 3.02 Carats Heated Pink Sapphire
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W 0.23 in D 0.23 in L 0.36 in
1.43 Carat Oval Peach Sapphire GIA Certified Unheated
Located in San Francisco, CA
This 1.43 carat Oval Orangy Yellow GIA certified Unheated natural sapphire was hand-selected by our
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire, Yellow Sapphire

1.07 Carat Pink Bubblegum Sapphire GIA Certified Unheated
Located in San Francisco, CA
This 1.07 carat GIA certified Unheated Natural Sapphire was hand-selected by our experts for its
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire, Pink Sapphire

Vivid Cornflower Blue Sapphire 3.03ct Cushion GIA Certified
Located in Toronto, Ontario
What a Beautiful 3.03 Cornflower Blue Sapphire Description: One Loose Blue Sapphire Report
Category

2010s Malagasy Loose Gemstones

Materials

Blue Sapphire, Sapphire

Vivid Cornflower Blue Sapphire 3.03ct Cushion GIA Certified
Vivid Cornflower Blue Sapphire 3.03ct Cushion GIA Certified
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W 0.27 in D 0.23 in L 0.34 in
2.18ct Cushion White Sapphire GIA Certified Sri Lanka
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire

2.18ct Cushion White Sapphire GIA Certified Sri Lanka
2.18ct Cushion White Sapphire GIA Certified Sri Lanka
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W 0.3 in D 0.18 in L 0.3 in
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Gia Certified Loose Sapphire For Sale on 1stDibs

On 1stDibs, you can find the most appropriate gia certified loose sapphire for your needs in our varied inventory. Finding an appealing gia certified loose sapphire — no matter the origin — is easy, but Sarosi By Timeless Gems, Gems and Jewels UK and Merkaba each produced a popular version that is worth a look. A cushion cut version of this piece has appeal, but there are also oval cut and pear cut versions for sale. When shopping for a gia certified loose sapphire, you’ll find that there are less available pieces for unisex or women today than there are for men.

How Much is a Gia Certified Loose Sapphire?

Prices for a gia certified loose sapphire can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $760 and can go as high as $235,600, while this accessory, on average, fetches $21,329.

Finding the Right loose-gemstones for You

Are you shopping for diamonds and other loose gemstones to create your own custom jewelry? 

Why might you purchase a diamond or gemstone “loose” — that is, on its own, not mounted in a piece of jewelry? Perhaps you’re a connoisseur looking to acquire a unique investment. The scarcity of high-quality colored diamonds, for instance, especially pink diamonds, means that their value increases over time; the same is true of rare Kashmir sapphires and Burmese rubies. Far rarer than diamonds, Paraiba tourmaline, discovered only in the 1980s, is treasured as much for its extraordinary color as its scarcity, both of which contribute to its high value.

A more common scenario would be that you’re hoping to create a very special piece of custom jewelry, such as an engagement ring or a milestone-birthday present, and want to personally select the most beautiful, unusual, or ultra-rare stone you can find and afford. Doing so adds to the romance and substance of the gift and can be a part of the story told as the jewel is passed from generation to generation.

If this sounds like you, read on for tips on becoming one of the world’s savviest gem hunters.

Educate yourself: When buying any piece of gem-set fine jewelry, you should familiarize yourself with the factors that determine a stone’s price. This will enable you to streamline your search for the perfect gem and have intelligent, productive conversations with sellers.

There is a wealth of information online, such as our diamond-buying guide and this overview of colored gemstones for engagement rings. The buying guides of the Gemological Institute of America (GIA), searchable by stone type, are also a widely trusted source for consumers venturing into the world of diamonds and gems for the first time.

Vet your vendor: If you peruse 1stDibs with any regularity, you know there is no shortage of vendors who deal in top-quality loose gemstones. (Read about our vetted sellers.) Finding a trustworthy, established dealer may be as easy as getting a recommendation from friends or family. And, although it may sound obvious, it pays to Google your candidates — and consult customer reviews — before making contact.

Harakh Mehta, designer and founder of the Mumbai, India–based fine-jewelry brand Harakh, has an innate understanding of proper client relations, especially when the customer is in unfamiliar territory. “Start chatting with the dealer, get to know them better," he says. "It’s very important to establish a comfort level. We never push a sale, as we want it to be a carefully considered purchase. So, if the client is not in a rush, we do it over a few virtual meetings or phone calls.”

Request documentation: The best dealers go to great lengths to furnish clients with documents verifying the quality rating, natural origin and provenance of a stone — showing, for example, that loose emerald hails from the famous Muzo mine in Colombia — and disclosing any treatments applied to enhance its appearance. (And who doesn't love emerald jewelry? The most valuable emeralds are the ones that have a deep bluish-green to true green color and no visible inclusions.)

If no grading report is available for a stone you are interested in, the dealer should be able to provide an authenticity document, such as an appraisal or info sheet, that has been signed by an in-house gemologist or professional appraiser. Google those names, too, for extra peace of mind.

Ask for videos and visuals: When transacting with a gem dealer online, you should always request real-time videos and photographs, since professional photos of a stone, usually on a white background, have likely been retouched for optimal presentation.

Read more about how to buy loose gemstones and find your dream gems today on 1stDibs.