search
  • Sign In
    Sign Up

  • English speaking customer support only

    1-800-464-1640

    International:

    +66-39601289

  • Change Language
  • USD
  • CART
FREE SHIPPING

Buy 18 mm Aquamarine Gems

(0)
18 mm Aquamarine Weight 18 mm Aquamarine Size 18 mm Aquamarine Clarity 18 mm Aquamarine Price 18 mm Aquamarine Origin
More
18 mm Aquamarine Single
18 mm Aquamarine Pairs
18 mm Aquamarine Lots
18 mm Aquamarine Faceted
18 mm Aquamarine Cabochons
All Sizes Size Ranges Calibrated Sizes
5 x 3 mm 6 x 4 mm 10 x 7 mm 12 x 10 mm 16 x 12 mm 17 mm 18 x 13 mm 20 x 15 mm
Sort By:
Clear All
Exact Match not Available: Go Back
6.52 carat Blue Aquamarine, Oval loose Aquamarine from India, Natural Untreated Gem, 11.7 x 9.9 mm, Photo A
Click for Product Video (486955)

6.52 carat Blue Aquamarine, Oval loose Aquamarine from India, Natural Untreated Gem, 11.7 x 9.9 mm

Aquamarine

6.52ct1 pc
$ 652.00
11.7 x 9.9 mm
View Details
Add to Cart
9.16 carat Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 15.6 x 12.7 mm, Photo A

9.16 carat Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 15.6 x 12.7 mm

Aquamarine

9.16ct1 pc
$ 80.61
15.6 x 12.7 mm
View Details
Add to Cart
9.63 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 16.2 x 11.6 mm, Photo A

9.63 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 16.2 x 11.6 mm

Aquamarine

9.63ct1 pc
$ 84.74
16.2 x 11.6 mm
View Details
Add to Cart
31.66 carat Blue Green Aquamarine, Round Cabochon loose Aquamarine from Madagascar, Natural Untreated Gem, 21.1 mm, Photo A

31.66 carat Blue Green Aquamarine, Round Cabochon loose Aquamarine from Madagascar, Natural Untreated Gem, 21.1 mm

Aquamarine

31.66ct1 pc
$ 196.93
21.1 mm
View Details
Add to Cart
6.21 carat Blue Aquamarine, Rondelle Cut loose Aquamarine from India, Natural Untreated Gems, 6.5 x 6.4 mm, Photo A

6.21 carat Blue Aquamarine, Rondelle Cut loose Aquamarine from India, Natural Untreated Gems, 6.5 x 6.4 mm

Aquamarine

6.21ct total5 pcs
$ 51.99
6.5 x 6.4 mm
View Details
Add to Cart
17.01 carat Blue Green Aquamarine, Round Cabochon loose Aquamarine from Madagascar, Natural Untreated Gem, 17.3 mm, Photo A
Click for Product Video (642980)

17.01 carat Blue Green Aquamarine, Round Cabochon loose Aquamarine from Madagascar, Natural Untreated Gem, 17.3 mm

Aquamarine

17.01ct1 pc
$ 119.07
17.3 mm
View Details
Add to Cart
22.89 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 22.4 x 16.4 mm, Photo A
Click for Product Video (657420)

22.89 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 22.4 x 16.4 mm

Aquamarine

22.89ct1 pc
$ 142.38
22.4 x 16.4 mm
View Details
Add to Cart
70.8 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Gem, 32.7 x 26.5 mm, Photo A

70.8 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Gem, 32.7 x 26.5 mm

Aquamarine

70.80ct1 pc
$ 460.20
32.7 x 26.5 mm
View Details
Add to Cart
0.21 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Untreated Gem, 5.2 x 3.1 mm, Photo A

0.21 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Untreated Gem, 5.2 x 3.1 mm

Aquamarine

0.21ct1 pc
$ 10.50
5.2 x 3.1 mm
View Details
Add to Cart
10.05 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 17.2 x 9 mm, Photo A
Click for Product Video (503395)

10.05 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 17.2 x 9 mm

Aquamarine

10.05ct1 pc
$ 1,989.90
17.2 x 9 mm
View Details
Add to Cart
27.57 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 25.9 x 16.4 mm, Photo A

27.57 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 25.9 x 16.4 mm

Aquamarine

27.57ct1 pc
$ 171.49
25.9 x 16.4 mm
View Details
Add to Cart
31.95 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 22.9 x 18.3 mm, Photo A

31.95 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 22.9 x 18.3 mm

Aquamarine

31.95ct1 pc
$ 198.73
22.9 x 18.3 mm
View Details
Add to Cart
3.23 carat Blue Green Aquamarine, Oval loose Aquamarine from India, Natural Untreated Gems, 6.6 x 4.9 mm, Photo A
Click for Product Video (465894)

3.23 carat Blue Green Aquamarine, Oval loose Aquamarine from India, Natural Untreated Gems, 6.6 x 4.9 mm

Aquamarine

3.23ct total5 pcs
$ 96.90
6.6 x 4.9 mm
View Details
Add to Cart
65.04 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Gem, 35.5 x 22 mm, Photo A
Click for Product Video (690228)

65.04 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Gem, 35.5 x 22 mm

Aquamarine

65.04ct1 pc
$ 650.40
35.5 x 22 mm
View Details
Add to Cart
20.1 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 21.6 x 16.5 mm, Photo A

20.1 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 21.6 x 16.5 mm

Aquamarine

20.10ct1 pc
$ 140.70
21.6 x 16.5 mm
View Details
Add to Cart
30.15 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 27.9 x 17.5 mm, Photo A

30.15 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 27.9 x 17.5 mm

Aquamarine

30.15ct1 pc
$ 187.53
27.9 x 17.5 mm
View Details
Add to Cart
22.15 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 21.8 x 17.3 mm, Photo A

22.15 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 21.8 x 17.3 mm

Aquamarine

22.15ct1 pc
$ 194.92
21.8 x 17.3 mm
View Details
Add to Cart
23.57 carat Blue Aquamarine, Emerald Cut loose Aquamarine from India, Natural Untreated Gem, 30.7 x 9.5 mm, Photo A
Click for Product Video (486948)

23.57 carat Blue Aquamarine, Emerald Cut loose Aquamarine from India, Natural Untreated Gem, 30.7 x 9.5 mm

Aquamarine

23.57ct1 pc
$ 3,535.50
30.7 x 9.5 mm
View Details
Add to Cart
63.5 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 29.8 x 22.8 mm, Photo A
Click for Product Video (658171)

63.5 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 29.8 x 22.8 mm

Aquamarine

63.50ct1 pc
$ 394.97
29.8 x 22.8 mm
View Details
Add to Cart
9.28 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 16.5 x 10.8 mm, Photo A

9.28 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 16.5 x 10.8 mm

Aquamarine

9.28ct1 pc
$ 74.24
16.5 x 10.8 mm
View Details
Add to Cart
13.81 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 18.4 x 10.3 mm, Photo A
Click for Product Video (450375)

13.81 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 18.4 x 10.3 mm

Aquamarine

13.81ct1 pc
$ 3,038.20
18.4 x 10.3 mm
View Details
Add to Cart
19.53 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 20.9 x 16.5 mm, Photo A

19.53 carat Blue Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 20.9 x 16.5 mm

Aquamarine

19.53ct1 pc
$ 121.48
20.9 x 16.5 mm
View Details
Add to Cart
2.4 carat Blue Aquamarine, Oval loose Aquamarine from India, Natural Untreated Gems, 6.4 x 4.8 mm, Photo A

2.4 carat Blue Aquamarine, Oval loose Aquamarine from India, Natural Untreated Gems, 6.4 x 4.8 mm

Aquamarine

2.40ct total4 pcs
$ 72.00
6.4 x 4.8 mm
View Details
Add to Cart
49 carat Blue Green Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 28.4 x 21.3 mm, Photo A
Click for Product Video (657708)

49 carat Blue Green Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 28.4 x 21.3 mm

Aquamarine

49.00ct1 pc
$ 304.78
28.4 x 21.3 mm
View Details
Add to Cart
89.31 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Gem, 37.6 x 30.2 mm, Photo A
Click for Product Video (690226)

89.31 carat Blue Aquamarine, Pear Shape loose Aquamarine from India, Natural Gem, 37.6 x 30.2 mm

Aquamarine

89.31ct1 pc
$ 580.51
37.6 x 30.2 mm
View Details
Add to Cart
13.54 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 19.3 x 9.7 mm, Photo A
Click for Product Video (450374)

13.54 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 19.3 x 9.7 mm

Aquamarine

13.54ct1 pc
$ 3,723.50
19.3 x 9.7 mm
View Details
Add to Cart
55.68 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 36.2 x 18.7 mm, Photo A
Click for Product Video (658177)

55.68 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 36.2 x 18.7 mm

Aquamarine

55.68ct1 pc
$ 346.33
36.2 x 18.7 mm
View Details
Add to Cart
31.34 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 33.9 x 14.6 mm, Photo A
Click for Product Video (657702)

31.34 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 33.9 x 14.6 mm

Aquamarine

31.34ct1 pc
$ 194.93
33.9 x 14.6 mm
View Details
Add to Cart
10.38 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 21.9 x 8.4 mm, Photo A
Click for Product Video (467811)

10.38 carat Blue Aquamarine, Emerald Cut loose Aquamarine from Madagascar, Natural Untreated Gem, 21.9 x 8.4 mm

Aquamarine

10.38ct1 pc
$ 2,055.24
21.9 x 8.4 mm
View Details
Add to Cart
33.43 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 36.2 x 15.1 mm, Photo A

33.43 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 36.2 x 15.1 mm

Aquamarine

33.43ct1 pc
$ 207.93
36.2 x 15.1 mm
View Details
Add to Cart
24.21 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 23.8 x 14.8 mm, Photo A

24.21 carat Blue Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 23.8 x 14.8 mm

Aquamarine

24.21ct1 pc
$ 150.59
23.8 x 14.8 mm
View Details
Add to Cart
3.39 carat Blue Green Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 11.7 x 7.7 mm, Photo A
Click for Product Video (497428)

3.39 carat Blue Green Aquamarine, Pear Shape loose Aquamarine from Madagascar, Natural Untreated Gem, 11.7 x 7.7 mm

Aquamarine

3.39ct1 pc
$ 261.03
11.7 x 7.7 mm
View Details
Add to Cart
Photos are of Actual Products for Sale
Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Pleasant.

Posted By Mk in November, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

Posted By APPS in April, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J 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 found it to be easy to browse and easy to use

Posted By Kyle in December, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

it was good

Posted By Bobk in January, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Great website and information

Posted By Moonshot in December, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus in October, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

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

Posted By John in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Very detailed and great pictures

Posted By Alexandrite in November, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Very good customer service. I had an issue on my end with shipping and I received a response the next day!

Posted By Orphanboy in December, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

No issues at all. It was great.

Posted By LJXK in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I find the website user friendly.

Posted By Becky in August, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Extremely easy to use, and I am fully satisfied with the purchase process.

Posted By Fl_Beachcomber in October, 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.

6512

Continue Shopping
Checkout
Continue Shopping
Checkout