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 easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

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I was looking for a source for affordable genuine gemstones for my grandson who is currently very interested in rocks and gems. I was quite surprised and pleased to find GemSelect and finding the right stones at the right price couldn't have been simpler.

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I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

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Posted By Julian in July, 2023

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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

0.5 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 5.2 x 4 mm

1.53 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6 mm

4.4 ct Loose Yellow Sapphire, 5.1 x 2.6 mm Marquise Cut From Tanzania

5.19 ct Oval Rutile Quartz, 13.1 x 9.1 mm From India

3.8 ct Loose Yellow Sapphire, 5.1 x 2.6 mm Marquise Cut From Tanzania

2.59 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.2 mm

1.39 ct Blue Apatite, 5.1 x 4.1 mm Oval Cut From Madagascar

0.78 ct Yellow Beryl, 7.5 x 5.3 mm Oval Cut From Madagascar

2.72 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.1 x 8.2 mm

0.72 ct Yellow Sphalerite, 6.1 x 4.2 mm Oval Cut From Spain

2.1 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.6 x 7.2 mm

0.33 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.7 x 3.7 mm

2.56 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.5 mm

9.61 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15.3 x 9.7 mm

3.93 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7 x 5.1 mm

3.05 ct Marquise Concave Cut Smoky Quartz, 18.1 x 7.1 mm From Brazil

1.23 ct Oval Cut Fire Opal, 8.1 x 6.1 mm From Mexico

6.24 ct Yellow Quartz, 12 mm Round Concave Cut From Brazil

1.35 carat Marquise Cut Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 13.9 x 6.6 mm

3.57 ct Loose Oval Concave Cut Mystic Quartz, 9.1 x 7 mm From Brazil

6.61 carat Swiss Blue Topaz, Carved Leaf loose Topaz from Brazil, Natural Gem, 17 x 10.1 mm

3.98 ct Round Cut Peridot, 4.4 mm From China

12.23 ct Oval Agate, 14 x 13.8 mm From Indonesia

2.29 ct Orange Sunstone, 8.7 mm Round Cut From India

0.77 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 9.7 x 4.4 mm

3.32 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

2.61 carat Carved Leaf Ruby, loose Certified Ruby from Madagascar, Natural Gem, 14.2 x 9.1 mm

28.69 carat White Scolecite, Pear loose Scolecite from South Africa, Natural Untreated Gem, 34.9 x 23.1 mm

2.43 carat Green Tourmaline, Carved loose Tourmaline from Mozambique, Natural Untreated Gem, 11.4 x 7.1 mm

1.99 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Sri Lanka, Natural Untreated Gems, 3.7 x 3.7 mm

3.12 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 10 mm

12.7 ct Baguette Tiger's Eye, 18.2 x 13.2 mm From Thailand

Gemstone Information

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