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Blue Sapphire Loose Gem Heated

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Natural Australian Blue Sapphire 0.49ct Oval Cut Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural Australian Blue Sapphire 0.49ct Oval Cut Loose Gem 4.7x4.2mm Natural Australian Blue
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire

Natural Australian Blue Sapphire 0.49ct Oval Cut Loose Gem
Natural Australian Blue Sapphire 0.49ct Oval Cut Loose Gem
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H 0.17 in W 0.19 in D 0.12 in
GRA Certified 2.06ct Green Blue Sapphire Loose Cushion Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
GRA Certified 2.06ct Green Blue Sapphire Loose Cushion Cut Gem 9.3x6.4mm GRA Certified Deep Green
Category

20th Century Loose Gemstones

Materials

Blue Sapphire, Sapphire

GRA Certified 2.06ct Green Blue Sapphire Loose Cushion Cut Gem
GRA Certified 2.06ct Green Blue Sapphire Loose Cushion Cut Gem
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H 0.15 in W 0.37 in D 0.26 in
0.54ct Fine Cornflower Ceylon Blue Sapphire Oval Cut Rare Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
0.54ct Fine Cornflower Ceylon Blue Sapphire Oval Cut RARE Loose Gem 5.3x4.3mm Natural Ceylon
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire

Unique 0.71ct Natural Green Blue Sapphire Cushion Rare Loose Gem 6.4x5mm VS
By Gems and Jewels UK
Located in Birmingham, GB
Unique 0.71ct Natural Green Blue Sapphire Cushion Rare Loose Gem 6.4x5mm VS Unique Natural Green
Category

20th Century Loose Gemstones

Materials

Blue Sapphire, Sapphire

Natural 1.14ct Light Blue Ceylon Fine Sapphire Pear Cut Loose Gem VS
By Gems and Jewels UK
Located in Birmingham, GB
Natural 1.14ct Light Blue Ceylon Fine Sapphire Pear Cut 7x5.7mm Loose Gem VS Natural Ceylon Light
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire

Blue Thailand Sapphire 1.18 Carat IGI Certified Oval Cut Loose Natural Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural Thailand Blue Sapphire Gemstone IGI Certified. 1.18 Carat stone with a very good oval cut
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire

1.02ct Fine Green Blue Sapphire GRA Certified Oval Cut Rare Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
1.02ct Fine Green Blue Sapphire GRA Certified Oval Cut Rare Loose Gem 6.3x5.3mm GRA Certified
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire, Sapphire

Royal Blue 0.68ct Australian VS Sapphire Oval Cut Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Royal Blue 0.68ct Australian VS Sapphire Oval Cut Loose Gem 5.6x4.8mm Natural Australian Blue
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Royal Blue 0.68ct Australian VS Sapphire Oval Cut Loose Gem
Royal Blue 0.68ct Australian VS Sapphire Oval Cut Loose Gem
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H 0.13 in W 0.23 in D 0.19 in
1.28ct Fine Ceylon Blue Sapphire Oval Cut Loose Gem VVS Sri Lankan
By Gems and Jewels UK
Located in Birmingham, GB
1.28ct Fine Ceylon Blue Sapphire Oval Cut Loose Gem 7.6x5.2mm VVS Sri Lankan Fine Natural Ceylon
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

12.83 Carats Ceylon Blue Sapphire (Heated) Plain Cabochon Natural sapphire gem
Located in Jaipur, RJ
Ceylon Blue Sapphire Cabochon for Fine Jewellery Gemstone: Blue Sapphire Heated Type : Ceylon
Category

2010s Burmese Loose Gemstones

Materials

Blue Sapphire

0.73ct Australian Blue Green Teal Sapphire Pear Teardrop Cut Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
0.73ct Australian Blue Green Teal Sapphire Pear Teardrop Cut Loose Gem 6.6x5.2mm Fine Natural Deep
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Fine 1.06ct Green Blue Natural Sapphire Oval Cut Loose Gem 6.4x5.6mm
By Gems and Jewels UK
Located in Birmingham, GB
Fine 1.06ct Green Blue Natural Sapphire Oval Cut Loose Gem 6.4x5.6mm Fine Natural Blue Green
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

1.86ct Bi Colour Fine Blue Green Rare Sapphire Trillion Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
1.86ct Bi Colour Fine Blue Green Rare Sapphire Trillion Loose Gem 11.3x5.7mm Fine Natural Bi Color
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Fine Royal Blue 0.52ct Australian Sapphire Oval Cut Rare Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Fine Royal Blue 0.52ct Australian Sapphire Oval Cut Rare Loose Gem 5x4.2mm Fine Royal Blue Natural
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Fine Deep Blue Australian Sapphire 2.31ct Heart Cut Rare Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural Deep Blue Australian Sapphire Gemstone. 2.31 Carat with a beautiful deep blue colour and
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

1.44ct Australian Vivid Blue Green Sapphire Oval Cut Loose Gem 7.3x6.2mm VS
By Gems and Jewels UK
Located in Birmingham, GB
1.44ct Australian Vivid Blue Green Sapphire Oval Cut Loose Gem 7.3x6.2mm VS Natural Australian
Category

20th Century Loose Gemstones

Materials

Sapphire, Green Sapphire

Fine Vivid Blue Ceylon Sapphire 0.89ct Oval Cut Rare Loose Gem VVS
By Gems and Jewels UK
Located in Birmingham, GB
Fine Vivid Blue Ceylon Sapphire 0.89ct Oval Cut Rare Loose Gem 5.8x4.8mm VVS Fine Natural Blue
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Fine 1.01ct Light Blue Ceylon Sapphire Cushion Cut Loose Rare Gem VS
By Gems and Jewels UK
Located in Birmingham, GB
Fine 1.01ct Light Blue Ceylon Sapphire Cushion Cut Loose Rare Gem 7.3x5mm VS Light Blue Ceylon
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Blue Sapphire 3.07 Ct Oval Natural Heated GIA Certified, Loose Gemstone
Located in South Melbourne, AU
Sourced and hand selected on the gem isle of Sri Lanka is this beautiful natural, blue sapphire
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Sapphire

Natural Australian Deep Blue Sapphire 0.67ct Oval Cut Loose Gem
Located in Birmingham, GB
Natural Australian Deep Blue Sapphire 0.67ct Oval Cut Loose Gem 5.6 x 4.2mm Natural Australian
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire

7.05 Carats Blue Sapphire No-Heated Natural Plain Fancy Cabochon For Jewelry Gem
Located in Jaipur, RJ
7.05 Carats Blue Sapphire No-Heated Natural Plain Fancy Cabochon For Jewelry Gem Gemstone: Blue
Category

2010s Burmese Loose Gemstones

Materials

Blue Sapphire

Natural Deep Blue Sapphire 1.45ct Oval Cut Loose Gemstone
By Gems and Jewels UK
Located in Birmingham, GB
Natural Deep Blue Sapphire 1.45ct Oval Cut Loose Gemstone 7.4x6.2mm Natural Deep Blue Sapphire
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Natural Deep Blue Sapphire 1.45ct Oval Cut Loose Gemstone
Natural Deep Blue Sapphire 1.45ct Oval Cut Loose Gemstone
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H 0.15 in W 0.3 in D 0.25 in
0.73ct Deep Blue Natural Sapphire Oval Loose Cut Gemstone VS
By Gems and Jewels UK
Located in Birmingham, GB
0.73ct Deep Blue Natural Sapphire Oval Loose Cut Gemstone 5.8x4.8mm VS Natural Green Blue Sapphire
Category

20th Century Loose Gemstones

Materials

Sapphire, Blue Sapphire

0.73ct Deep Blue Natural Sapphire Oval Loose Cut Gemstone VS
0.73ct Deep Blue Natural Sapphire Oval Loose Cut Gemstone VS
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H 0.13 in W 0.23 in D 0.19 in
GRA Certified 1.43ct Fine Blue Sapphire Oval Cut Rare Loose Gem
Located in Birmingham, GB
GRA Certified 1.43ct Fine Blue Sapphire Oval Cut Rare Loose Gem 7.7x5.5mm GRA Certified Deep Blue
Category

21st Century and Contemporary British Loose Gemstones

Materials

Blue 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

Fine 1.10ct ‘Kashmir Blue’ Sapphire Oval Cut Rare Loose Gem
Located in Birmingham, GB
Fine 1.10ct ‘Kashmir Blue’ Sapphire Oval Cut Rare Loose Gem 6.5 x 4.8mm Fine Natural ‘Kashmir Blue
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

GIA Certified 2.60 Carats Heated Blue Sapphire
Located in Los Angeles, CA
Blue Sapphires are creating a stir in the market, and this heart shaped gem has been cut to
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

GIA Certified 2.60 Carats Heated Blue Sapphire
GIA Certified 2.60 Carats Heated Blue Sapphire
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W 0.32 in D 0.2 in L 0.36 in
Fine 0.88ct Blue Vivid Sapphire Pear Cut Rare Loose Cut Gemstone
By Gems and Jewels UK
Located in Birmingham, GB
Fine 0.88ct Blue Vivid Sapphire Pear Cut Rare Loose Cut Gemstone 6.5x5.3mm Fine Natural Vivid Blue
Category

20th Century Loose Gemstones

Materials

Sapphire, Blue Sapphire

4.18 Carat Unheated Natural Blue Sapphire Pear, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
prettiest crystalline, rich blue sapphires are mined. Such a brilliant, lively gem and so well-proportioned
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

1.53 Carat Certified Pretty Loose Blue Sapphire Cushion Shape Ring Gem
Located in Peshawar, PK
Loose Blue Sapphire Weight: 1.53 Carats Dimension: 7.8 x 6.3 x 3.3 Mm Colour: Blue Origin
Category

21st Century and Contemporary Central African Arts and Crafts Loose Gems...

Materials

Blue Sapphire

1.00ct Australian Blue Sapphire Fine Natural Oval Cut Loose Rare Gem 6.7x5mm
Located in Birmingham, GB
1.00ct Australian Blue Sapphire Fine Natural Oval Cut Loose Rare Gem 6.7x5mm Natural Blue
Category

21st Century and Contemporary British Loose Gemstones

Materials

Blue Sapphire

Deep Teal Blue Sapphire 1.55 Carat Cushion Cut Rare Natural Gem
By Gems and Jewels UK
Located in Birmingham, GB
Fine Deep Teal Blue Sapphire Gemstone. Natural sapphire with a stunning deep teal blue colour
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire

1.22ct Fine Deep Purple Blue Sapphire Pear Cut Rare Loose Cut Gem
Located in Birmingham, GB
1.22ct Fine Deep Purple Blue Sapphire Pear Cut Rare Loose Cut Gem 6.6x5.8mm Natural Deep Purple
Category

21st Century and Contemporary British Loose Gemstones

Materials

Blue Sapphire

Fine Australian Green Blue Bi Colour Sapphire 0.91ct Heart Cut Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural Green Blue Parti-Colour/bi colour Australian Sapphire Gem. 0.91 Carat with a beautiful and
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire, Green Sapphire, Sapphire

FINE Deep Blue Sapphire 1.02ct Pear Teardrop Cut RARE Loose Gemstone 7x6mm
By Gems and Jewels UK
Located in Birmingham, GB
FINE Deep Blue Sapphire Gemstone. 1.02 Carat with a beautiful deep blue colour and excellent
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire

Unheated 8.63 Carat Blue Green Sapphire, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
well-cut. Most sapphires are heated to deepen their color, so a sapphire with a natural, vivid teal hue
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Green Sapphire

0.87ct Deep Blue Sapphire Square Cushion Cut IGI Certified Rare Loose Gemstone
By Gems and Jewels UK
Located in Birmingham, GB
0.87ct Deep Blue Sapphire Square Cushion Cut IGI Certified Rare Loose Gemstone Natural Deep Blue
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Indigo Blue Sapphire 0.75ct Natural Australian Cushion Cut Loose Gem
Located in Birmingham, GB
Indigo Blue Sapphire 0.75ct Natural Australian Cushion Cut Loose Gem 5.8x4.5mm Natural Australian
Category

21st Century and Contemporary British Loose Gemstones

Fine Deep Royal Blue Australia Sapphire 0.77ct Oval Cut Rare Loose Gem
Located in Birmingham, GB
Fine Deep Royal Blue Australia Sapphire 0.77ct Oval Cut Rare Loose Gem 5.5x4.5mm Fine Royal Blue
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Fine Royal Blue Sapphire 0.68ct Cushion Cut Loose Rare Gem
Located in Birmingham, GB
Fine Royal Blue Sapphire 0.68ct Cushion Cut Loose Rare Gem 5.2x4.3mm Fine Royal Blue Australian
Category

21st Century and Contemporary British Loose Gemstones

1.12ct Deep Blue Sapphire Pear Teardrop Cut IGI Certified Loose Rare Gem
Located in Birmingham, GB
1.12ct Deep 0Blue Sapphire Pear Teardrop Cut IGI Certified Loose Rare Gem Deep Blue Sapphire In
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Unique Fine Ceylon Blue Violet Sapphire 0.82ct Oval Loose Cut Blue Rare VS
By Gems and Jewels UK
Located in Birmingham, GB
Unique Fine Ceylon Blue Violet Sapphire 0.82ct Oval Loose Cut Blue Rare 6x5mm VS Unique Ceylon
Category

20th Century Loose Gemstones

Materials

Sapphire

1.35ct Deep Blue Sapphire Rare Oval Cut IGI Certified Loose Gemstone in Blister
By Gems and Jewels UK
Located in Birmingham, GB
1.35ct Deep Blue Sapphire Rare Oval Cut IGI Certified Loose Gemstone in Blister Natural Deep Blue
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Fine Blue Ceylon Sapphire 0.85ct Oval Cut Rare Loose Gemstone VVS
By Gems and Jewels UK
Located in Birmingham, GB
Fine Blue Ceylon Sapphire 0.85ct Oval Cut Rare Loose Gemstone 6.5x4.7mm VVS Fine Light Blue Ceylon
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Deep Blue Green Sapphire 1.20ct Pear Teardrop Cut Loose Gemstone 7x5.8mm VVS
By Gems and Jewels UK
Located in Birmingham, GB
Deep Blue Green Sapphire 1.20ct Pear Teardrop Cut Loose Gemstone 7x5.8mm VVS Natural Australian
Category

20th Century Loose Gemstones

Materials

Sapphire, Green Sapphire

Unique Bi Colour 1.00ct Deep Green Blue Teal Sapphire Oval Cut Loose Gem
Located in Birmingham, GB
Unique Bi Colour 1.00ct Deep Green Blue Teal Sapphire Oval Cut Loose Gem 6.5x5mm Greenish Blue Bi
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

0.84ct Vivid Blue Purple Sapphire Pear Teardrop Cut Rare Loose Cut Gem 6.7x5.2mm
Located in Birmingham, GB
0.84ct Vivid Blue Purple Sapphire Pear Teardrop Cut Rare Loose Cut Gem 6.7x5.2mm Natural Vivid
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Fine Blue Ceylon Sapphire 0.60ct Oval Cut Rare Loose Cut Gemstone VS
By Gems and Jewels UK
Located in Birmingham, GB
Fine Blue Ceylon Sapphire 0.60ct Oval Cut Rare Loose Cut Gemstone 5.4x4.5mm VS Fine Blue Ceylon
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

1.01ct Fine Blue Sapphire GRA Certified Cushion Cut Rare Loose Gem 6.4x5.3mm
Located in Birmingham, GB
1.01ct Fine Blue Sapphire GRA Certified Cushion Cut Rare Loose Gem 6.4x5.3mm GRA Certified Deep
Category

21st Century and Contemporary British Loose Gemstones

2.72 Carat Cushion Cut Natural Blue Sapphire Loose Gemstone from Sri Lanka
Located in Horana, LK
KNS Gems is available for purchase as a loose gemstone. The photos and video showcase the sapphire in
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

2.16 Carat Oval Cut Natural Blue Sapphire Loose Gemstone from Sri Lanka
Located in Horana, LK
. Sourced from ceylon. 2.16 carat This magnificent blue sapphire by KNS Gems is available for purchase as
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

2.11 Carat Oval Cut Natural Blue Sapphire Loose Gemstone from Sri Lanka
Located in Horana, LK
Gems is available for purchase as a loose gemstone. The photos and video showcase the sapphire in both
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

1.99 Carat Oval Cut Natural Blue Sapphire Loose Gemstone from Sri Lanka
Located in Horana, LK
intense blue sapphire. Sourced from Ceylon. 1.99 ct. This magnificent blue sapphire by KNS Gems is
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

1.55 Carat Faceted Yellowish Blue Sapphire Oval Shape Gem From Madagascar Mine
Located in Peshawar, PK
Loose Sapphire Weight: 1.55 Carats Dimension: 6.7 x 5.6 x 4.5 Mm Colour: Yellow And Blue Origin
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Sapphire

3.32 Carats Blue Sapphire
Located in Los Angeles, CA
Behold a captivating Natural Blue Sapphire weighing 3.32 carats. In an elegant oval shape measuring
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

3.32 Carats Blue Sapphire
3.32 Carats Blue Sapphire
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W 0.27 in D 0.22 in L 0.4 in
1.64 Carats Green Blue Sapphire
Located in Los Angeles, CA
Introducing a captivating Natural Green Blue Sapphire with a carat weight of 1.64 carats. This
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

1.64 Carats Green Blue Sapphire
1.64 Carats Green Blue Sapphire
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W 0.2 in D 0.17 in L 0.29 in
1.20 Carats Green Blue Sapphire
Located in Los Angeles, CA
Introducing a Natural Green Blue Sapphire, graced with a weight of 1.20 carats. This enchanting gem
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

1.20 Carats Green Blue Sapphire
1.20 Carats Green Blue Sapphire
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W 0.18 in D 0.16 in L 0.26 in
1.52 Carats Green Blue Sapphire
Located in Los Angeles, CA
Presenting a Natural Green Blue Sapphire, distinguished by its weight of 1.52 carats. This alluring
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

1.52 Carats Green Blue Sapphire
1.52 Carats Green Blue Sapphire
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W 0.22 in D 0.16 in L 0.28 in
1.22 Carats Green Blue Sapphire
Located in Los Angeles, CA
Presenting a Natural Green Blue Sapphire, graced with a weight of 1.22 carats. This alluring gem
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

1.22 Carats Green Blue Sapphire
1.22 Carats Green Blue Sapphire
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W 0.2 in D 0.14 in L 0.28 in
1.15 Carats Green Blue Sapphire
Located in Los Angeles, CA
Presenting a Natural Green Blue Sapphire, distinguished by its 1.15-carat weight. This enchanting
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

1.15 Carats Green Blue Sapphire
1.15 Carats Green Blue Sapphire
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W 0.2 in D 0.15 in L 0.28 in
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Blue Sapphire Loose Gem Heated For Sale on 1stDibs

You are likely to find exactly the blue sapphire loose gem heated you’re looking for on 1stDibs, as there is a broad range for sale. Every item for sale was constructed with extraordinary care, often using gold, 14k gold and 18k gold. You can easily find a 28 antique edition and 197 modern creations to choose from as well. Finding the perfect blue sapphire loose gem heated may mean sifting through those created during different time periods — you can find an early version that dates to the 20th Century and a newer variation that were made as recently as the 21st Century. There have been many well-made iterations of the classic blue sapphire loose gem heated over the years, but those made by Gems and Jewels UK and Sarosi By Timeless Gems are often thought to be among the most beautiful. Take a look at a blue sapphire loose gem heated featuring blue sapphire from our inventory today to add the perfect touch to your look. See these pages for an oval cut iteration of this accessory, while there are also brilliant cut cut and pear cut cut versions available here, too. Finding a blue sapphire loose gem heated for sale for men should be easy, but there are 205 pieces available to browse for unisex as well as women, too.

How Much is a Blue Sapphire Loose Gem Heated?

The price for a blue sapphire loose gem heated starts at $57 and tops out at $178,080 with these loose-gemstones, on average, selling for $230.

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.