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1 Carat Loose Gemstones

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1 Carat Ceylon Sapphire Loose Gemstone Oval 7x5mm
Located in Columbus, OH
NNJ Designs presents a 0.98 carat Ceylon Sapphire loose gemstone! This Ceylon Sapphire gemstone
Category

2010s American Loose Gemstones

Materials

Sapphire

1 Carat Purple Sapphire Loose Gemstone Pear Shape 7x5mm
Located in Columbus, OH
NNJ Designs presents a 0.91 carat pear shaped Purple Sapphire loose gemstone! This Purple Sapphire
Category

2010s American Loose Gemstones

Materials

Sapphire, Purple Sapphire

1 Carat Purple Sapphire Loose Gemstone Pear Shape 6.5x5.5mm
Located in Columbus, OH
NNJ Designs presents a 0.98 carat pear shaped Purple Sapphire gemstone. This Purple Sapphire
Category

2010s American Loose Gemstones

Materials

Sapphire, Purple Sapphire

1 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose gemstone & matching your
Category

2010s Malagasy Loose Gemstones

Materials

Ruby

1 Ct Ruby Pear Loose Gemstone
1 Ct Ruby Pear Loose Gemstone
W 0.28 in D 0.12 in L 0.24 in
Natural Spinel Loose gemstone 1. 72Ct., Cushion cut, Burma, Certificate GFCO
By GRALJEWELRY
Located in Daugavpils, LV
Natural Spinel Loose gemstone 1.72 ct., origin Burma! Laboratory certified GFCO Gemstone Color
Category

2010s Burmese Loose Gemstones

Materials

Spinel

Deep Vivid Green Natural Tsavorite Ring, Pendant Loose Gemstone 1 Ct Pear Cut
Located in Peshawar, PK
!! 💎 GEMSTONE TYPE: Tsavorite Garnet ⚖️ WEIGHT: 1 Carat 🪚 SHAPE & CUT: Pear Cut 📏 SIZE (MM): 7.22 x
Category

21st Century and Contemporary Tanzanian Contemporary Loose Gemstones

Materials

Tsavorite

300.40 Carats Australian Chrysoprase Smooth Tumbles 1 Strand Natural Gemstone
Located in Jaipur, RJ
Chrysoprase Smooth Tumbles Natural Gemstone Necklace Weight: 300.40 Carats Size: 7x11 To 17X28 MM
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Chrysophrase

Round 1 Carat Certified Loose Diamond - K I1, GIA Certified
Located in Tustin, CA
This Round 1 Carat Certified Loose Diamond is a stunning choice for any fine jewelry creation. With
Category

2010s American Loose Gemstones

Materials

Diamond

Princess 1 Carat Certified Loose Diamond - M VS1, GIA Certified
Located in Tustin, CA
Elevate your jewelry creation with this stunning Princess 1 Carat Certified Loose Diamond. With a
Category

2010s North American Loose Gemstones

Materials

Diamond

Round 1 Carat Certified Loose Diamond - L SI2, GIA Certified
Located in Tustin, CA
This stunning 1.01-carat round loose diamond is a timeless treasure, certified by GIA for its
Category

2010s American Loose Gemstones

Materials

Diamond

1 Carat Emerald Certified Loose Diamond - J SI2, GIA Certified
Located in Tustin, CA
This stunning 1.00-carat emerald-cut diamond radiates elegance with its timeless shape and
Category

2010s American Loose Gemstones

Materials

Diamond

34.49 Carats Top Quality Rubellite Tourmaline Oval 1 Pieces Natural Gemstone
Located in Jaipur, RJ
Gemstone - Rubellite Tourmaline Weight - 34.49 Ct Size - 17x23 MM Piece - 1 Shape - Oval
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

HOLIDAY SALE 1 Carat Natural Fancy Dark Yellow Brown Round Loose Diamond
Located in Great Neck Plaza, NY
Natural fancy dark yellow brown round diamond weighing 1 carats *Free shipping within the US
Category

2010s American Loose Gemstones

Materials

Diamond, Brown Diamond, Gold, 14k Gold, Yellow Gold

1 1/3 Carat Cushion Blue Sapphire GIA
Located in San Francisco, CA
This Cushion shape 1.28-carat Natural Blue color sapphire GIA certified has been hand-selected by
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

1 1/2 Carat Oval Blue Sapphire GIA
Located in San Francisco, CA
This Oval shape 1.46-carat Natural Blue color sapphire GIA certified has been hand-selected by our
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

1 1/3 Carat Octagonal Blue Sapphire GIA
Located in San Francisco, CA
This Octagonal shape 1.32-carat Natural Blue color sapphire GIA certified has been hand-selected by
Category

21st Century and Contemporary Nigerian Loose Gemstones

Materials

Blue Sapphire

1 1/6 Carat Oval Purple Sapphire GIA
Located in San Francisco, CA
This Oval shape 1.14-carat Natural Purple color sapphire GIA certified has been hand-selected by
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire, Purple Sapphire

1 1/3 Carat Oval Purple-Pink Sapphire GIA
Located in San Francisco, CA
This Oval shape 1.33-carat Natural Purple-Pink color sapphire GIA certified has been hand-selected
Category

21st Century and Contemporary Malagasy Loose Gemstones

Materials

Pink Sapphire

1 1/6 Carat Oval Yellow Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 1.17-carat Natural Yellow color sapphire GIA certified has been hand-selected by
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Yellow Sapphire

1 1/3 Carat Oval Purple-Pink Sapphire GIA
Located in San Francisco, CA
This Oval shape 1.34-carat Natural Purple-Pink color sapphire GIA certified has been hand-selected
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Pink Sapphire

1 1/2 Carat Oval Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 1.47-carat Natural Blue color sapphire GIA certified has been hand-selected by our
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Unique 1 Carat Hexagonal Natural Diamond
Located in New York, NY
ITEM DESCRIPTION Stone Shape: CUSHION MODIFIED BRILLIANT Diamond Weight: 1 ct Our Price: $2499.00
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

Unique 1 Carat Hexagonal Natural Diamond
Located in New York, NY
ITEM DESCRIPTION Stone Shape: CUSHION MODIFIED BRILLIANT Diamond Weight: 1 ct Our Price: $2499.00
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

1 1/3 Carat Round Purplish Pink Sapphire GIA Unheated
Located in San Francisco, CA
This Round shape 1.28-carat Natural Purplish Pink color sapphire GIA certified has been hand
Category

21st Century and Contemporary Malagasy Loose Gemstones

Materials

Pink Sapphire

Deep Inky Blue Natural Tourmaline Gemstone, 1 Ct Emerald Cut for Ring
Located in Peshawar, PK
GEMSTONE TYPE: Tourmaline PIECE(S): 1 WEIGHT: 1 Carat SHAPE: Emerald Cut SIZE (MM): 5 x 6.07 x 4.20
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

1 Carat Oval Blue Sapphire GIA
Located in San Francisco, CA
This Oval shape 1.04-carat Natural Blue color sapphire GIA certified has been hand-selected by our
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

1 Carat Oval Blue Sapphire GIA
Located in San Francisco, CA
This Oval shape 1.03-carat Natural Blue color sapphire GIA certified has been hand-selected by our
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

1 1/3 Carat Emerald Shape Teal Sapphire GIA Unheated
Located in San Francisco, CA
This Emerald shape 1.35-carat Natural Unheated Teal color sapphire GIA certified has been hand
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire, Green Sapphire

Captivating 1 carat Heart Cut Brilliant Diamond
Located in רמת גן, IL
Natural cut Heart diamond in a 1 carat G VVS1 cut. This diamond comes with GIA Certificate and
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1 1/4 Carat Oval Light Grayish Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 1.24-carat Natural Light Grayish Blue color sapphire GIA certified has been hand
Category

21st Century and Contemporary American Loose Gemstones

Materials

Blue Sapphire

Sparkling 1 Carat Heart Brilliant Cut Diamond
Located in רמת גן, IL
This stunning diamond features a 1 carat heart brilliant cut diamond with a D color, IF clarity
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1 1/2 Carat Pear Violet Changing to Purple Sapphire GIA Unheated
Located in San Francisco, CA
This Pear shape 1.51-carat Natural Violet changing to Purple color sapphire GIA certified has been
Category

2010s Loose Gemstones

Materials

Sapphire

GIA Certified 1-Carat Trillion Cut Natural Diamond
Located in New York, NY
ITEM DESCRIPTION Stone Shape: Trillion Diamond Weight: 1 Carat Color: U-V Measurements: 6.33 x
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

1 1/2 Carat Oval Zoned Yellow And Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 1.47-carat Natural Zoned Yellow And Blue color sapphire GIA certified has been hand
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire, Yellow Sapphire

1 1/3 Carat Oval Zoned Yellow and Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 1.30-carat Natural Zoned Yellow And Blue color sapphire GIA certified has been hand
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire, Yellow Sapphire

1 Carat Triangular Purple-Pink Sapphire GIA Unheated
Located in San Francisco, CA
This Triangular shape 0.94-carat Natural Purple-Pink color sapphire GIA certified has been hand
Category

21st Century and Contemporary Loose Gemstones

Materials

Pink Sapphire

GIA Certified 1 Carat Oval F Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC57917 Stone Shape: Oval Diamond Weight: 1.00Carat Fancy Color: F Cut: Oval Modified Brilliant Measurements: 8.78 x 5.74 x 2.03 mm Symmetry: Good Polish: Ve...
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

1 pc. Shimmering 4.01 Carat Emerald Cut Natural Diamond
Located in רמת גן, IL
This stunning diamond is sure to turn heads. It features a sparkling 4.01 carat emerald cut diamond
Category

2010s Israeli Loose Gemstones

Materials

Diamond

A Pair of 1 Carat Unheated Burmese 'Pigeons Blood' Rubies
Located in London, GB
A fine pair of 1 carat each 'Pigeons Blood' unheated rubies. These Cushion cut rubies are
Category

2010s Burmese Loose Gemstones

Materials

Ruby

1 2/5 Carat Cushion Greenish Blue Sapphire GIA
Located in San Francisco, CA
This Cushion shape 1.41-carat Natural Greenish Blue color sapphire GIA certified has been hand
Category

21st Century and Contemporary Tanzanian Loose Gemstones

Materials

Blue Sapphire

2 1/4 Carat Cushion Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Cushion shape 2.23-carat Natural Blue color sapphire GIA certified has been hand-selected by
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

3 1/5 Carat Octagonal Purplish Pink Sapphire GIA
Located in San Francisco, CA
This Octagonal shape 3.21-carat Natural Purplish Pink color sapphire GIA certified has been hand
Category

21st Century and Contemporary Malagasy Loose Gemstones

Materials

Pink Sapphire

1pc Dazzling Natural cut Cushion diamond in a 1 carat
Located in רמת גן, IL
Natural cut Cushion diamond in a 1 carat E VVS1 cut. This diamond comes with GIA Certificate and
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1pc Sparkling Natural cut Rectangular diamond in a 1 carat
Located in רמת גן, IL
Natural cut Rectangular diamond in a 1 carat I VVS1 cut. This diamond comes with GIA Certificate
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1 2/5 Carat Oval Bluish Violet Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 1.38-carat Natural Bluish Violet color sapphire GIA certified has been hand
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire

2 1/6 Carat Oval Grayish Purple Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 2.14-carat Natural Grayish Purple color sapphire GIA certified has been hand
Category

21st Century and Contemporary Malagasy Loose Gemstones

Materials

Sapphire, Purple Sapphire

1 2/3 Carat Oval Light Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Oval shape 1.57-carat Natural Light Blue color sapphire GIA certified has been hand-selected
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

Dazzling 1 Pc Natural Diamond with 0.50 Carat Round, D IF IGI Certificate
Located in רמת גן, IL
One shiny and sparkling round brilliant cut natural diamond in a 0.5 carat D IF with excellent cut
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Dazzling 1pc Natural Diamond w/ 1 Carat Round Brilliant D IF GIA Certificate
Located in רמת גן, IL
One dazzling round brilliant cut natural diamond in a 1 carat D IF EX cut, polish, and very good
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1 Sphene Cts 4.51
Located in Hong Kong, HK
, is a spectacular gemstone prized by collectors for its diamond-like luster and high dispersion. The
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Other

1 Cushion-Cut Tourmaline Cts 2.27
Located in Hong Kong, HK
This cushion-cut tourmaline, weighing 2.27 carats, is the epitome of understated elegance. With
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Tourmaline

1 Paraiba Tourmaline fac. 6.11c oval
By Thomas Leyser
Located in Idar-Oberstein, DE
This Paraiba Tourmaline, 6,11c oval 14,1x10,5mm is eyeclean and comes from Mocambique. The color can be described to be a swimming blue/green.
Category

2010s European Contemporary Loose Gemstones

Materials

Paraiba

1 Round Lemon Quartz Carving Cts 25.43
Located in Hong Kong, HK
This exquisite round lemon quartz carving, weighing 25.43 carats, is a true masterpiece sourced
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Quartz

Dazzling 1 Pc Natural Diamond 1.01 Carat Cushion D VVS2 GIA Certificate
Located in רמת גן, IL
One shimmering and sparkling modified Brilliant Cushion cut diamond in a 1.01 carat D VVS2 with
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1 Paraiba Tourmaline Cabouchon 10.58c oval
By Thomas Leyser
Located in Idar-Oberstein, DE
This Paraiba Tourmaline, 10,58c oval 15,5x11,5mm is beautiful in color and shape and comes from Mocambique. The color can be described as swimming pool blue/green.
Category

2010s European Contemporary Loose Gemstones

Materials

Paraiba

1 Rubelite fac. 17.90c. trillion shape
By Thomas Leyser
Located in Idar-Oberstein, DE
This Rubelite Tourmaline has 17,90c.. It is facetted in trillion shape and the size is 12,5x13mm. The color can be described as very intensiv red, with small and almost unvisible, na...
Category

2010s European Contemporary Loose Gemstones

Materials

Rubelite

1 Aquamarine Santa Maria fac. octagonal 15.2x11mm
By Thomas Leyser
Located in Idar-Oberstein, DE
This Aquamarine has 10,52c.. It is facetted in octagonal shape and the size is 15,2x11mm. The color can be decribed as intensive blue typical for Santa Maria origin. The purity is cl...
Category

2010s European Contemporary Loose Gemstones

Materials

Aquamarine

1 Paraiba Tourmaline fac. 19.16c. cushion shape
By Thomas Leyser
Located in Idar-Oberstein, DE
This Paraiba Tourmaline, 19,16c. cushion shape, 19x16,5mm is unheated and therefore very rare. It has slight natural inclusions. The color can be decribed to be strong and intensiv t...
Category

2010s European Contemporary Loose Gemstones

Materials

Paraiba

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1 Carat Loose Gemstones For Sale on 1stDibs

There is a broad range of 1 carat loose gemstones for sale on 1stDibs. All of the items for sale were constructed with extraordinary care, often using 18k Gold, Gold and Platinum. Find a collection of 10 vintage versions or 616 modern creations for a more contemporary example of these cherished accessories. Our inventory is broad and distinctive, with accessories on offer that were made as long ago as the 18th Century to those produced as recently as the 21st Century. Contemporary and Modern are consistently popular styles when it comes to 1 carat loose gemstones. Versions of these items have been a part of the life’s work for many jewelers, but those produced by Merkaba, Sarosi By Timeless Gems and Tamir are consistently popular. Browse our collection of 147 Tourmaline versions today to add the perfect touch to your look. There are many oval cut, cushion cut and emerald cut 1 carat loose gemstones for sale. If you’re browsing the variety of 1 carat loose gemstones for sale, you’ll find that many are available today for women, but there are still pieces to choose from for men.

How Much are 1 Carat Loose Gemstones?

Prices for 1 carat loose gemstones start at $27 and top out at $260,000 with these rings, on average, selling for $6,199.

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.