11/08/2026
Published by on 11/08/2026
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Black Star Sapphire 26.11ct – 16x14mm (BL0047) Natural Unheat Gemstone

This stunning black star sapphire gemstone measures 16.40 x 14.00 x 10.00 mm and weighs 26.11 carats. Its exquisite cabochon shape and excellent cut grade make it a perfect addition to any jewelry collection. This natural gemstone was ethically sourced from Thailand and has not undergone any treatments. The gemstone's clarity grade is unspecified and upon request, certification can be provided. This loose gemstone is perfect for those looking to create a unique and beautiful piece of jewelry. Its deep black color and natural form make it a rare find.
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11/08/2026
Published by on 11/08/2026
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5.43 ct Fancy Cabochon (16 x 14 mm) Multi Color Australian Koroit Boulder Opal

--> 5.43 ct Super-Excellent Fancy Cabochon Shape (16 x 14 mm) Multi Color Australian Koroit Boulder Opal Natural Loose Gemstone Rare Stone! 100% Natural Multi Color Orgin From Australia 100% Natural Genuine Mined from Earth Gemstone!!! Gem Type Boulder Opal Color Multi Color Shape Fancy Cabochon Size(LxWxD) 15.94 x 13.86 x 2.95 mm Weight 5.43 ct Hardness 6.5 Luster Excellent Clarity Opaque Treatment: 100% Natural Origin Australia RefractiveIndex 1.37-1.47 Specific Gravity 2.1 Clarity Scale IF VVS VS SI I1 Internally flawless; free of inclusions Very, very slight inclusions; inclusions barely seen under 10x magnification Very slight inclusions; inclusions can be seen under 10x magnification Slightly included; small inclusions seen by naked eye Included; inclusions seen with naked eye Track Page Views WithAuctiva's Counter
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