6.37 ct Cobalt-Blue Spinel – Natural Tanzanian Cushion Brilliant
$28,665.00
Total weight 6.37 ct
Size 11 × 9.1 × 7.2 mm
Shape Rectangular cushion brilliant
Colour Neon cobalt blue
Origin Tanzania (Mahenge)
Treatment None – completely natural
This gem looks like a glowing blue power-core.
Cut into a chunky cushion brilliant, the stone blasts vivid cobalt flashes from every angle. Natural cobalt-blue spinel from Tanzania is ultra-rare; most “cobalt” stones on the market are much smaller.
Why it’s a show-stopper
• 6 ct weight with eye-clean clarity—serious presence
• Cushion brilliant mix gives both deep mirrors and bright fire
• Cobalt spinel rivals the best sapphire but is far rarer
• Spinel hardness (Mohs 8) is tough for daily wear
• Lab report available – confirms cobalt colour is natural and no treatment
Shipping & Returns
Tracked, insured shipping worldwide.
14-day inspection window—return for a refund if it’s not your forever stone (buyer covers return postage).
Note: Photos taken in bright white light to show true colour; every screen shows colour slightly differently. Certificate provided on request.
MAECENAS IACULIS
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ADIPISCING CONVALLIS BULUM
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