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Home Gemstones Opal
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 Green Opal, Oval Cut, 19.6x16.1 mm

9.7 out of 10
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Product ID: 675198
Type: Opal
Weight: 16.51 ct 1 gem
Size: mm calibrated
Size: 19.6 x 16.1 x 9 mm
Exact Size: 19.55 x 16.14 x 8.98 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Earth Green
Clarity: Opaque
Treatment: Untreated
Origin: Brazil
Content: 1 pc
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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 -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

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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