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.

Read All

Gemstone Information

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023

Source: Bizrate

Overall Rating -> 10

Easy to use website, made it very easy to buy. Will shop here again.

Posted By Bjorn in January, 2024

Source: Bizrate

Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

Source: Bizrate

Overall Rating -> 10

Always have good experience

Posted By Ginnie in September, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

Easy and fast

Posted By Mark in February, 2024

Source: Bizrate

Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

Source: Bizrate

Overall Rating -> 10

I have received emails for about a year and today is the condition that had me decide on the purchase

Posted By Tim in April, 2024

Source: Bizrate

Overall Rating -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

Source: Bizrate

Overall Rating -> 10

The website is easy to navigate and has a great selection. I am an amateur silver smith casting jewelry with stones

Posted By Jrplunk in April, 2024

Source: Bizrate

Overall Rating -> 10

It was easy to search and find what i wanted

Posted By Gunner in November, 2023

Source: Bizrate

Overall Rating -> 10

Very Good

Posted By Julian in July, 2023

Source: Bizrate

Overall Rating -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 9

Good interaction with site

Posted By Brick in September, 2023

Source: Bizrate

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT

183/24-25 Moo 4, Trirat Rd.
T. Chantanimit, A. Muang
Chanthaburi 22000
THAILAND
Phone: 1-800-464-1640
Phone: +66-39601289

STAY IN TOUCH | NEWSLETTER

*You're signing up to receive GemSelect promotional email.

Switch to Mobile Version

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

231

Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

15.22 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 16.8 x 14.2 mm

21.81 ct Drilled Sphere Rutile Quartz, 8 mm From India

1.02 ct Pink Morganite, 6.4 mm Round Cut From Afghanistan

4.45 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15 x 9.9 mm

0.55 ct Loose Yellow Sapphire, 5.4 x 4.6 mm Oval Cut From Tanzania

0.46 carat Green Sapphire, Emerald-Cut loose Sapphire from Tanzania, Natural Gem, 5.2 x 3.2 mm

1.21 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 7.1 x 5.1 mm

21.22 carat Bi-color Ametrine, Oval Concave Cut loose Ametrine from Brazil, Natural Untreated Gem, 20.4 x 16.2 mm

11.55 carat Swiss Blue Topaz, Pear Concave Cut loose Topaz from Brazil, Natural Gem, 17.9 x 11.9 mm

1.07 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.8 x 5.8 mm

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

15.04 ct Oval Psilomelane Dendrite, 25.3 x 16.8 mm From Mexico

39.03 ct Oval Jasper, 29.9 x 21.8 mm From Indonesia

1.48 carat Green Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 19.8 x 3.4 mm

0.91 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 5.9 x 4.1 mm

5.94 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gems, 9.1 x 8.9 mm

0.83 carat Orange Hessonite Garnet, Round loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 5.7 mm

52.78 ct Oval Rose Quartz, 25 x 21.6 mm From South Africa

0.66 ct Purple Spinel, 5.3 x 4.6 mm Cushion Cut From Tanzania

2.25 ct Loose Octagon Cut Sapphire, 3.9 x 3 mm From Tanzania

1.63 ct Orange Sphalerite, 7.3 x 5.3 mm Oval Cut From Spain

14.06 ct Pink Moonstone, 11.3 x 11.1 mm Carved From India

6.86 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 10 x 8.1 mm

7.1 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 5.1 x 5 mm

1.72 carat Purple Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 6.6 mm

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

5.87 ct Pink Kunzite, 12.4 x 7.1 mm Octagon Cut From Afghanistan

5.97 ct Oval Tiger's Eye, 10.1 x 8 mm From Thailand

9.03 ct Yellow Quartz, 16 x 11.9 mm Octagon Concave Cut From Brazil

1.48 ct Yellow Beryl, 7.1 mm Round Cut From Brazil

1.16 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 17.6 x 3.2 mm

0.49 carat Oval Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5.9 x 3.9 mm

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT