Calibrated 12 x 10 mm Oval Shape Natural Loose Gemstones: GemSelect

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 oval shapes, facet cut and cabochon gems available now in 12 x 10 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 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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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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The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

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Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

0.56 ct Loose Yellow Sapphire, 4.4 x 4.4 mm Cushion Cut From Tanzania

0.93 ct Oval Cut Peridot, 7.2 x 5.1 mm From China

20.63 carat Green Fluorite, Oval loose Fluorite from India, Natural Untreated Gem, 17 x 14.3 mm

19.2 ct Baguette Ruby-Zoisite, 14.5 x 13.2 mm From Tanzania

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

1.15 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.2 x 4 mm

4.99 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 12.7 x 12.1 mm

56.27 carat Pear Tiger's Eye Matrix, loose Certified Tiger's Eye Matrix from Mexico, Natural Untreated Gem, 39.7 x 29.1 mm

0.36 carat Purple Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.6 x 4.6 mm

40.92 ct Cushion Obsidian, 36.1 x 23 mm From Mexico

0.7 ct Loose Purple Sapphire, 6.7 x 4.8 mm Oval Cut From Tanzania

0.86 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 5.9 x 4.1 mm

0.51 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gem, 4.9 mm

12.95 ct Marquise Rainbow Moonstone, 25.5 x 11.4 mm From the United States

0.86 ct Cushion Cut Color-Change Diaspore, 7.1 x 5.1 mm From Brazil

7.93 carat Swiss Blue Topaz, Carved Leaf loose Topaz from Brazil, Natural Gem, 14.7 x 13.6 mm

1.01 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.3 x 4.2 mm

38.75 ct Trillion Obsidian, 34.9 x 25.8 mm From Mexico

44.82 ct Oval Jasper, 33.9 x 19.4 mm From Indonesia

50.91 ct Fancy Jasper, 32.8 x 22.4 mm From Indonesia

0.93 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 5.2 x 5.1 mm

24.63 ct Green Aventurine, 29.2 x 17 mm Oval Cut From Brazil

5.37 carat Swiss Blue Topaz, Trillion-Cut loose Topaz from Brazil, Natural Gems, 7 x 6.9 mm

0.38 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 4.5 x 3.6 mm

1.15 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15 x 3.9 mm

0.62 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.2 x 4.3 mm

7.78 ct Red Andesine Labradorite, 11.2 x 9.1 mm Oval Cut From Congo

2.66 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.4 x 8.2 mm

2.55 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 9.1 x 7.5 mm

1.32 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15.6 x 3.1 mm

0.35 carat Blue Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 4.3 x 3.4 mm

0.68 ct Loose Yellow Sapphire, 4.6 x 4.5 mm Cushion Cut From Tanzania

Gemstone Information

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