Calibrated 6 x 6 mm Trillion Shape Loose Natural Gemstones from Ge...

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Trillion shapes, facet cut and cabochon gems available now in 6 mm x 6 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not meant nor expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often around 0.3 mm or slightly higher even. This small variance can usually be accommodated for standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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Overall Rating -> 9

It went well

Posted By Rob in December, 2023

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Overall Rating -> 9

So many gorgeous stones! The only "complaint" I have is it's difficult to visualize sizes in mm. Perhaps some way to compare in inches?It has been a long time since I bought stones from Gem select, but the process wasn't too difficult.

Posted By Ktreva52 in February, 2024

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Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 2023

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Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

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Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

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Overall Rating -> 7

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023

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Overall Rating -> 10

It was easy to search and find what i wanted

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Overall Rating -> 8

Found on a search engine. Scanned inventory and made a small purchase.

Posted By Ralli in August, 2023

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Overall Rating -> 10

I have used Gem Select many times over the past 10 years and have always been happy with the product & services

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Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

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Overall Rating -> 10

The website is easy to search, the variety of gems is excellent and the educational information is interesting and helpful! Love browsing and shopping the GemSelect website!

Posted By Happiness in January, 2024

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Overall Rating -> 10

Great selection, I love your site! Great product visibility, information, etc.

Posted By John in February, 2024

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Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

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Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

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Overall Rating -> 10

I have used gm select a while ago and was always pleased with the products

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Gemstones A-Z

Buy Trillion Shape 6x6 mm Gems

6.83 ct Black Star Sapphire, 11.7 x 9.4 mm Oval Cut From Thailand

0.76 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 7.3 x 5.2 mm

20.62 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 23.2 x 20.5 mm

1.33 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.9 x 3 mm

3.42 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9.1 x 6.9 mm

4.93 ct Green Jade, 12.3 x 10.1 mm Oval Cut From Myanmar

9.59 carat Pear Dendritic Agate, loose Certified Dendritic Agate from India, Natural Untreated Gem, 17.8 x 13.1 mm

5.26 ct Carved Prehnite, 12.1 x 9.8 mm From South Africa

23.11 ct Round Howlite, 21.8 mm From the United States

28.3 ct Oval Rainbow Moonstone, 29.5 x 13.8 mm From the United States

2.27 ct Yellow Beryl, 10.2 x 8.1 mm Oval Cut From Madagascar

1.4 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.4 x 5.5 mm

1.61 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 7.9 x 6.1 mm

3.91 ct Black Star Sapphire, 9.4 x 8.4 mm Cushion Cut From Thailand

0.28 ct Baguette Cut Kornerupine, 4.3 x 3.4 mm From Sri Lanka

36.7 ct Oval Tiger's Eye Matrix, 28.5 x 18 mm From Mexico

0.72 ct Loose Yellow Sapphire, 5.7 x 4.3 mm Oval Cut From Madagascar

9.17 ct Asscher Cut Rose Quartz, 12.9 x 12.7 mm From South Africa

2.83 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 9.2 x 9.2 mm

2.82 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gems, 8.1 x 6.2 mm

0.89 ct Loose Round Cut Lapis Lazuli, 6.1 mm From Afghanistan

9.33 ct Octagon Cut Rose Quartz, 12.6 x 12.5 mm From South Africa

1.39 ct Loose White Sapphire, 4.2 mm Diamond Cut From Madagascar

2.96 ct Oval Cat's Eye Scapolite, 9.2 x 7.1 mm From Madagascar

0.62 ct Loose White Sapphire, 5.1 x 3.2 mm Oval Cut From Tanzania

0.56 ct Green Sphene, 5.8 x 3.8 mm Oval Cut From Sri Lanka

0.68 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.1 x 4.2 mm

2.55 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 8.1 x 6.9 mm

0.35 ct Baguette Cut Kornerupine, 5.8 x 3 mm From Sri Lanka

1.76 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 4.8 x 3 mm

0.64 ct Loose Trillion Cut Mystic Quartz, 6.1 x 6 mm From Brazil

0.6 carat Green Tourmaline, Baguette Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 7 x 3.7 mm

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