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Home Gemstones Star Ruby
13.18 ct Purple Star Ruby Gemstone, Star Ruby Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
13.18 ct Purple Star Ruby Stone, Natural Star Ruby in Oval Cabochon Shape for Sale Star Ruby Gemstone in 13.6 x 11.3 mm Size for Sale, Star Ruby Stone in Reddish Purple Color

13.18ct Natural Purple Star Ruby, Oval Cut, 13.6x11.3 mm

9.7 out of 10
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Product ID: 523615
Type: Star Ruby
Weight: 13.18 ct 1 gem
Size: mm calibrated
Size: 13.6 x 11.3 x 7.9 mm
Exact Size: 13.56 x 11.25 x 7.87 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Reddish Purple
Clarity: Opaque
Treatment: Fracture Filled
Origin: Madagascar
Content: 1 pc
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Product Description

This is a 13.18 carat natural reddish purple Star Ruby gem, 1 pc in oval shape with an exact size of 13.56 x 11.25 x 7.87 mm. This loose Star Ruby gemstone was mined in Madagascar and its clarity is Opaque.

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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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Posted By Alexis in May, 2026
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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
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Turnaround Time: 5-10 working days Details
Enlarged Gemstone Image