Buy 6.5 mm Round Calibrated Gemstones from GemSelect

Some people buy 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 Round shapes, facet cut and cabochon gems available now in 6.5 mm diameter 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 usually 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 even slightly higher. 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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Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

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Gemstones A-Z

Buy Round Shape 6.5 mm Gems

0.53 ct Loose Yellow Sapphire, 3.2 x 3.2 mm Princess Cut From Tanzania

7.8 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

1.56 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 8.1 x 6 mm

0.56 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 4 mm

9.5 ct Oval Star Ruby, 13.4 x 11.3 mm From Madagascar

30.84 ct Loose Oval Bloodstone, 27.3 x 19.9 mm From Madagascar

6.9 ct Fancy Boulder Opal, 16.1 x 12.5 mm From Australia

3.47 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 11.9 x 9.7 mm

2.28 ct Pink Morganite, 9.2 x 8.8 mm Trillion Cut From Afghanistan

5.12 ct Fancy Fire Agate, 14.1 x 9.6 mm From Mexico

4.32 ct Loose Oval Cut Strawberry Quartz, 12.1 x 9.9 mm From India

5.81 carat Swiss Blue Topaz, Carved Leaf loose Topaz from Brazil, Natural Gem, 11.2 x 8.7 mm

9.82 carat Swiss Blue Topaz, Carved Leaf loose Topaz from Brazil, Natural Gem, 20.9 x 8.6 mm

2.12 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7 x 5.2 mm

0.64 ct Loose Yellow Sapphire, 5 x 3.2 mm Oval Cut From Tanzania

3.61 ct Loose Round Pietersite, 10.1 mm From Namibia

6.13 ct Oval Quartz Cat's Eye, 11.8 x 10.1 mm From Sri Lanka

21.55 ct Oval Howlite, 27.2 x 18 mm From the United States

1.08 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14.6 x 3.4 mm

82.02 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 31.1 x 26.9 mm

1.52 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 7.4 x 5.4 mm

1.41 ct Purple Spinel, 7.2 x 6.2 mm Oval Cut From Tanzania

3.52 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 mm

20.87 ct Odd Shaped Moss Agate, 20.9 x 15.8 mm From India

3.06 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 9.7 x 7.8 mm

2.14 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 23.7 x 3.5 mm

36.03 ct Oval Star Ruby, 18.5 x 16.9 mm From Madagascar

2.01 ct Pink Morganite, 8.1 x 6.1 mm Oval Cut From Afghanistan

0.94 ct Yellow Morganite, 7.9 x 5.9 mm Oval Cut From Afghanistan

5.64 ct Round Concave Cut Rose Quartz, 12.1 mm From Brazil

4.18 ct Oval Prehnite, 9.2 x 7 mm From South Africa

1.02 ct Round Labradorite, 6 mm From Madagascar

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