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:

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Overall Rating -> 9

Good interaction with site

Posted By Brick in September, 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

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Overall Rating -> 10

Great site

Posted By Lord of Bananas in November, 2023

Source: Bizrate

Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

Always an easy experience using Gem select.

Posted By Jeff in November, 2023

Source: Bizrate

Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

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Overall Rating -> 10

Love Gem select. great gems for the price. Can't beet them

Posted By Apps in September, 2023

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Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

Source: Bizrate

Overall Rating -> 10

My last experience was good, in fact every experience I have had with them has met my expectations or surpassed them. These are really good people to work with.

Posted By Spinach in May, 2023

Source: Bizrate

Overall Rating -> 9

They had a easy to navigate directory for all the currently available products. You could filter by almost any parameter you could think of. The checkout process was smooth and painless, and the shipping was quick and efficient. All-in-all, it was a very positive experience.

Posted By Brian in May, 2024

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Overall Rating -> 9

The selection and filtering is a little overwhelming, but that's only because there is so much to choose from.

Posted By Kasper in June, 2023

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Overall Rating -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

Source: Bizrate

Overall Rating -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

Source: Bizrate

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

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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

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

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

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

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

Buy 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

Buy 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

Buy 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

Buy 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

Buy 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

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

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