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16.51 ct Green Opal Gemstone, Opal Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
16.51 ct Green Opal Stone, Natural Opal in Oval Cabochon Shape for Sale Opal Gemstone in 19.6 x 16.1 mm Size for Sale, Opal Stone in Earth Green Color

16.51ct Natural Earth Green Opal, Oval Cut, 19.6x16.1 mm

9.9 out of 10
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Opal Product ID: 675198
Type: Opal
Opal Weight: 16.51 ct Opal 1 gem
Opal Size: mm calibrated Opal
Opal Size: 19.6 x 16.1 x 9 mm Opal
Opal Exact Size: 19.55 x 16.14 x 8.98 mm
Length x Width x Depth
Opal Shape: Oval Cabochon Opal
Opal Color: Earth Green Opal
Opal Clarity: Opaque Opal
Opal Treatment: Untreated
Opal Origin: Brazil Opal
Content: 1 pc
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$
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Product Description

This is a 16.51 carat natural earth green Opal gem, 1 pc in oval shape with an exact size of 19.55 x 16.14 x 8.98 mm. This loose Opal gemstone was mined in Brazil and its clarity is Opaque. No treatment has been applied on this natural Opal stone

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Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have found GemSelect to have the best selections of quality stones at a reasonable price. I like the packaging and the report availability.

Posted By Sam in March, 2025
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I love the product and the details about each of them.

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The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
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Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
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Overall Rating -> 10 star ratings

Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
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Download Identification Report PDF
BGL Brief Report $ 18.00
Turnaround Time: 3-4 working days Details
AIG Brief Report $ 35.00
Turnaround Time: 5-10 working days Details
ICA Brief Report $ 90.00
Turnaround Time: 8-12 working days Details
Enlarged Gemstone Image