search
  • Sign In
    Sign Up
  • English speaking customer support only

    1-800-464-1640

    International:

    +66-39601289

  • Change Language
  • USD
  • CART

Buy Round Shape 12 mm Gems

(21)
Round Shape 12 mm Gems Weight Round Shape 12 mm Gems Size Round Shape 12 mm Gems Clarity Round Shape 12 mm Gems Price Round Shape 12 mm Gems Origin
More
Round Shape 12 mm Gems Single
Round Shape 12 mm Gems Pairs
Round Shape 12 mm Gems Lots
Round Shape 12 mm Gems Faceted
Round Shape 12 mm Gems Cabochons
Sort By:
Clear All
Photos are of Actual Products for Sale

12.25 ct Ball Agate, 11.8 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 12.25 carat weight Agate

12.25ct1 Piece
$ 9.80
11.8 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 12.25 ct Agate
Agate Shape: Ball Agate
Agate Size: 11.8 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.67 ct Loose Round Agate, 12.2 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.67 carat weight Agate

8.67ct1 Piece
$ 14.74
12.2 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.67 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.2 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

9.66 ct Loose Round Agate, 12 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 9.66 carat weight Agate

9.66ct1 Piece
$ 16.42
12 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 9.66 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

7.66 ct Loose Round Agate, 11.7 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 7.66 carat weight Agate

7.66ct1 Piece
$ 13.02
11.7 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 7.66 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 11.7 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.29 ct Loose Round Agate, 11.8 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.29 carat weight Agate

8.29ct1 Piece
$ 14.09
11.8 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.29 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 11.8 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

7.82 ct Loose Round Agate, 11.6 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 7.82 carat weight Agate

7.82ct1 Piece
$ 13.29
11.6 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 7.82 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 11.6 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.02 ct Round Agate, 12.4 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.02 carat weight Agate

8.02ct1 Piece
$ 16.04
12.4 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.02 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.4 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Translucent Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8 ct Round Agate, 12.2 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.00 carat weight Agate

8.00ct1 Piece
$ 6.40
12.2 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.00 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.2 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Translucent Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.18 ct Round Agate, 12.3 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.18 carat weight Agate

8.18ct1 Piece
$ 8.18
12.3 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.18 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.3 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Translucent Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

12.7 ct Ball Agate, 11.7 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 12.70 carat weight Agate

12.70ct1 Piece
$ 10.16
11.7 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 12.70 ct Agate
Agate Shape: Ball Agate
Agate Size: 11.7 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.02 ct Loose Round Agate, 12.2 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.02 carat weight Agate

8.02ct1 Piece
$ 13.63
12.2 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.02 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.2 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

9.33 ct Loose Round Agate, 12.3 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 9.33 carat weight Agate

9.33ct1 Piece
$ 15.86
12.3 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 9.33 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.3 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

12.89 ct Ball Agate, 11.7 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 12.89 carat weight Agate

12.89ct1 Piece
$ 10.31
11.7 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 12.89 ct Agate
Agate Shape: Ball Agate
Agate Size: 11.7 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

13.98 ct Ball Agate, 12.3 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 13.98 carat weight Agate

13.98ct1 Piece
$ 11.18
12.3 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 13.98 ct Agate
Agate Shape: Ball Agate
Agate Size: 12.3 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

7.88 ct Round Agate, 11.9 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 7.88 carat weight Agate

7.88ct1 Piece
$ 6.30
11.9 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 7.88 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 11.9 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Translucent Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

15.04 ct Ball Agate, 12.3 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 15.04 carat weight Agate

15.04ct1 Piece
$ 12.03
12.3 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 15.04 ct Agate
Agate Shape: Ball Agate
Agate Size: 12.3 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

7.46 ct Round Agate, 12 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 7.46 carat weight Agate

7.46ct1 Piece
$ 14.92
12 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 7.46 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Translucent Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.35 ct Round Agate, 12.1 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.35 carat weight Agate

8.35ct1 Piece
$ 16.70
12.1 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.35 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.1 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Translucent Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

7.04 ct Round Agate, 12.1 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 7.04 carat weight Agate

7.04ct1 Piece
$ 5.63
12.1 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 7.04 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.1 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Translucent Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.27 ct Loose Round Agate, 11.6 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.27 carat weight Agate

8.27ct1 Piece
$ 14.06
11.6 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.27 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 11.6 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

8.1 ct Loose Round Agate, 12.3 mm From Indonesia

Buy Natural Agate, Qty: 1 pc | 8.10 carat weight Agate

8.10ct1 Piece
$ 13.77
12.3 mm
Item Description
Stone Type: Loose Agate
Agate Weight: 8.10 ct Agate
Agate Shape: Round Cabochon Agate
Agate Size: 12.3 mm Agate
Agate Color: Multicolor Agate
Agate Clarity: Opaque Agate
Agate Origin: Indonesia Agate
Agate Treatment: Untreated
Agate Quantity: 1
Agate Certificate: GemSelect
Product Description:
View Details
Add to Cart

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 Round shapes, facet cut and cabochon gems available now in 12 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 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.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Hello: You do have good website. Vast majority of folks would buy the Gems for its spiritual, physical / energy level, emotional level positive aspects. You have only very brief mention of this aspect of each Gem ..may be you can add little bit more about ways to leverage the beneificial effect of each gems i.e. some practical tips.ThanksRupen Patel

Posted By EarthDeep in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use as always and in all steps from opening site to paying.

Posted By Pete in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience! First time buyer

Posted By Todi89 in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Everything fine.

Posted By Hilario in December, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

The website design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

Posted By Kuba in December, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Super easy to do business for great products.

Posted By BoBBy in January, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

Posted By Phoenix in February, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

purchased birthstones to be mounted into stud earrings as a gift for a friend's gift

Posted By MI photo in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection

Posted By GHS40 in December, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Selection ability was straightforward and easy.

Posted By Dave in May, 2023
Source: Bizrate
STAY IN TOUCH | NEWSLETTER
*You're signing up to receive GemSelect promotional email.
Partners and Trust Payment options

Switch to Mobile Version

Copyright © 2005-2024 GemSelect.com all rights reserved.

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

953

Continue Shopping
Checkout
Continue Shopping
Checkout