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0.51 ct Blue Sapphire Gemstone, Sapphire Gem in Round Cabochon Shape for Sale.
Photos are of Actual Product for Sale
0.51 ct Blue Sapphire Stone, Natural Sapphire in Round Cabochon Shape for Sale Sapphire Gemstone in 4.5 mm (calibrated) Size for Sale, Sapphire Stone in Greyish Blue Green Color

0.51ct Natural Blue Sapphire, Round Cut, 4.37 mm

9.7 out of 10
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Product ID: 658592
Type: Sapphire
Weight: 0.51 ct 1 gem
Size: 4.5 mm calibrated
Size: 4.4 mm
Exact Size: 4.37 x 2.41 mm
Diameter x Depth
Shape: Round Cabochon
Color: Greyish Blue Green
Clarity: Transparent
Treatment: Heated
Origin: Tanzania
Content: 1 pc
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Product Description

This is a 0.51 carat natural greyish blue green Sapphire gem, 1 pc in round shape with an exact size of 4.37 mm x 2.41 mm . This loose Sapphire gemstone was mined in Tanzania and its clarity is Transparent. This natural Sapphire has been heated to enhance its vivid color.

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Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
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A pleasant experience and many choices to choose from

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Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
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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
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Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
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