18 - 20 mm Onyx Gemstones

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	11.40 ct Onyx
Onyx Shape:	Oval Cabochon Onyx
Onyx Size:	18.2 x 13.3 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	12.12 ct Onyx
Onyx Shape:	Oval Cabochon Onyx
Onyx Size:	18.2 x 13.1 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	12.32 ct Onyx
Onyx Shape:	Oval Cabochon Onyx
Onyx Size:	18.2 x 13.3 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	11.25 ct Onyx
Onyx Shape:	Pear Cabochon Onyx
Onyx Size:	19.6 x 14.6 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	11.43 ct Onyx
Onyx Shape:	Pear Cabochon Onyx
Onyx Size:	19.1 x 14.5 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	12.52 ct Onyx
Onyx Shape:	Pear Cabochon Onyx
Onyx Size:	20 x 15 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	10.39 ct Onyx
Onyx Shape:	Pear Cabochon Onyx
Onyx Size:	19 x 14.5 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Onyx
Onyx Weight:	10.74 ct Onyx
Onyx Shape:	Pear Cabochon Onyx
Onyx Size:	19.1 x 14.5 mm Onyx
Onyx Color:	Black Onyx
Onyx Clarity:	Opaque Onyx
Onyx Origin:	Sri Lanka Onyx
Onyx Treatment:	Dyed
Onyx Quantity:	1
Onyx Certificate:	GemSelect
Product Description:

Read All

Gemstone Information

Find More Content Here

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

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

Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

Posted By Nikki J in September, 2023

Source: Bizrate

Overall Rating -> 8

Found on a search engine. Scanned inventory and made a small purchase.

Posted By Ralli in August, 2023

Source: Bizrate

Overall Rating -> 10

After having looked at other purchasing sites, this is my first choice.

Posted By MJC in January, 2024

Source: Bizrate

Overall Rating -> 10

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

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

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

Source: Bizrate

Overall Rating -> 10

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

Posted By Terry in June, 2023

Source: Bizrate

Overall Rating -> 10

i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

Posted By Jf in January, 2024

Source: Bizrate

Overall Rating -> 10

I enjoyed browsing though different varieties of rubies. I felt that the experience was simple and easy to navigate!

Posted By Daws in July, 2023

Source: Bizrate

Overall Rating -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate in December, 2023

Source: Bizrate

Overall Rating -> 10

The site is very easy to use and I will continue to shop here. The quality is superb

Posted By Genia in January, 2024

Source: Bizrate

Overall Rating -> 10

Excellent site.

Posted By Boru in December, 2023

Source: Bizrate

Overall Rating -> 10

GemSelect has the Best gems. Clear photos and detailed description helps me make the best choice. I have Never been disappointed by thier quality items.

Posted By Rock Hound in July, 2023

Source: Bizrate

Selected Gemstones

Gemstones A-Z

Buy 18 - 20 mm Onyx Gems

11.4 ct Oval Onyx, 18.2 x 13.3 mm From Sri Lanka

Natural Onyx, Qty: 1 pc | 11.40 carat weight Onyx

12.12 ct Oval Onyx, 18.2 x 13.1 mm From Sri Lanka

Natural Onyx, Qty: 1 pc | 12.12 carat weight Onyx

12.32 ct Oval Onyx, 18.2 x 13.3 mm From Sri Lanka

Natural Onyx, Qty: 1 pc | 12.32 carat weight Onyx

11.25 carat Pear Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 19.6 x 14.6 mm

Natural Onyx, Qty: 1 pc | 11.25 carat weight Onyx

11.43 carat Pear Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 19.1 x 14.5 mm

Natural Onyx, Qty: 1 pc | 11.43 carat weight Onyx

12.52 carat Pear Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 20 x 15 mm

Natural Onyx, Qty: 1 pc | 12.52 carat weight Onyx

10.39 carat Pear Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 19 x 14.5 mm

Natural Onyx, Qty: 1 pc | 10.39 carat weight Onyx

10.74 carat Pear Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 19.1 x 14.5 mm

Natural Onyx, Qty: 1 pc | 10.74 carat weight Onyx

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT