Untreated Natural Gems: Authentic Genuine Gemstones GemSelect

The idea of treating gemstones is nothing new. Nowadays, gem treatments are a way to supply the global demand for colored gemstones with a very limited 'natural' supply. Many gem types are always, or almost always, treated. The most common gem treatment is heat treatment, which is routinely applied to ruby and sapphire. Other gems such as emerald, tanzanite, blue zircon and blue topaz, are generally treated to produce their distinctive color; in fact it's virtually impossible to buy blue topaz that has not been irradiated. Even for the most expert gem buyers, determining whether a gemstone has been treated or enhanced is not always easy, and usually requires much more than just a jeweler's loupe.

Even with advanced gemological equipment, many treatments are still almost impossible to detect. So for many gem and jewelry buyers, one of the best ways to ensure the gem they're acquiring is completely natural and untreated, is through the selective buying of gemstone varieties that for the most part are never enhanced in any way. If you're searching for untreated gemstones, you may be surprised to discover we carry over 100 different untreated gem types.

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was just windowshopping and spotted a couple "Very Uncommons", a tsavorite & a demantoid garnet that were both in a size I was looking for, & that I could very easily pay for -- so figured I would grab the tsavo ASAP and got the demantoid to accompany so they wouldn't be lonely.

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Gemstones A-Z

Buy Untreated Gemstones

1.01 ct Cushion Cut Color-Change Diaspore, 10.9 x 3.8 mm From Turkey

2.58 carat Diamond Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5 mm

14.86 ct Oval Coral, 22.3 x 16.7 mm From Indonesia

2.66 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4 x 4 mm

2.79 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm

2.02 ct Yellow Quartz, 9.4 x 9.3 mm Carved From Brazil

2.02 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 7.9 mm

1.57 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.1 x 6.4 mm

0.52 ct Octagon Cut Kornerupine, 5.3 x 4.1 mm From Sri Lanka

0.55 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 4.1 mm

7.57 carat Pink Morganite, Pear loose Morganite from Afghanistan, Natural Untreated Gem, 15.9 x 12 mm

6.93 ct Marquise Ruby-Zoisite, 23.3 x 9.2 mm From Tanzania

1.64 ct Loose Orange Hessonite Garnet, 7.2 x 5.6 mm Octagon Cut From Madagascar

1.37 ct Loose Oval Cut Black Opal, 10.4 x 8.1 mm From Ethiopia

1.72 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5.1 x 5.1 mm

0.78 carat Blue Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.1 x 5 mm

3.2 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 9 mm

3.26 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11 x 9.1 mm

4.39 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.8 x 9.8 mm

3.83 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 4.9 mm

2.92 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 9.9 x 7.9 mm

2.38 ct Yellow Apatite, 10.9 x 6.5 mm Baguette Cut From Madagascar

6.07 ct Diamond Cut Smoky Quartz, 12.6 mm From Brazil

3.2 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 8.9 mm

0.52 ct Loose Purple Sapphire, 6.1 x 4.2 mm Oval Cut From Tanzania

0.89 ct Oval Strawberry Quartz, 7.4 x 5.7 mm From Russia

2.66 ct Yellow Apatite, 8.2 x 8.1 mm Asscher Cut From Madagascar

5.43 ct Orange Sunstone, 14.1 x 10.1 mm Oval Cut From India

11.6 ct Round Maw-Sit-Sit, 13.2 mm From Myanmar

2.36 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 9.8 x 6.3 mm

3.34 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4 x 3.9 mm

4.49 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 6 mm

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