5.09ct Vivid Blue Cobalt Spinel – Natural Cushion Cut from Tanzania
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7-day returnsNo questions asked
Natural & disclosedLab report on request
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A rare find in the world of fine gemstones, this 5.09 carat Cobalt Spinel showcases a striking vivid blue hue with a brilliant cushion cut. Mined in Tanzania, this untreated spinel is a collector’s dream and an exceptional centerpiece for bespoke jewelry.
With excellent hardness (7.5–8) and dazzling clarity, this gemstone is a standout for August birthdays and for those under Sagittarius, Scorpio, Taurus, and Aries zodiac signs.
Specifications:
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Gemstone: Natural Cobalt Blue Spinel
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Weight: 5.09 Carats
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Dimensions: 10.66 × 8.52 × 6.38 mm
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Color: Vivid Blue
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Cut: Cushion
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Clarity: Eye Clean
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Treatment: None
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Origin: Tanzania
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Hardness: 7.5 – 8 (Mohs Scale)
Spiritual & Collector's Significance:
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Birthstone: August
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Zodiac Signs: Sagittarius, Scorpio, Taurus, Aries
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Metaphysical Energy: Enhances vitality, clarity, and inner strength
💎 Did You Know?
Spinels are often mistaken for sapphires and rubies. In fact, some of the world’s most famous crown jewels are actually spinels! Any spinel over 5 carats is considered rare, especially in vivid colors like this.
✨ Why Collect This Stone?
Natural cobalt spinels over 5 carats are hard to find and rapidly gaining value. This cushion cut gem is ideal for a statement ring, high jewelry, or long-term investment.
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About spinel
Long mistaken for ruby in royal crowns, spinel is rarely treated and prized for vivid, pure colour.
How your stone arrives
Re-checked under the loupe and photographed before packing.
Gem box with care card, in discreet unbranded outer packaging.
Ships in 1–3 business days. Tracking number sent by email.
Not in love with it? Return within 7 days, no questions asked.
Why collectors buy from Farangems
Bought from cutters and miners, so you pay a dealer's price.
Origin and treatment stated plainly on every listing.
One of the largest natural coloured-stone inventories online.
Real gemologists on WhatsApp, with video on request.
Before you buy
Are your gemstones natural?
Yes. Every stone we sell is natural. Treatments such as heating are always disclosed, and we do not stock synthetics, glass-filled or coated stones.
Can I get a lab certificate?
Many stones already have reports from labs such as GRS, AIGS or GIT. For any other stone, message us and we can submit it to an independent lab before shipping.
How do the Collector Tiers work?
Spend $300 for 10% off, $600 for 15% off plus free express shipping, or $1,200 for 20% off with free express shipping and a gift box. Applied automatically at checkout.
How long does shipping take?
We offer free standard shipping via postal services (estimated delivery: 25-30 days). Express shipping is available as a paid option.
What is your return policy?
Returns are accepted within 7 days of receiving the item, with no questions asked. Customers are responsible for the cost of return shipping.
Can I see a video before buying?
Yes. Message us on WhatsApp at +66 83 103 7630 and we will send video in daylight and under different lighting.
Every stone is natural. Every treatment is disclosed.
Bought directly from cutters and miners at the Jewelry Trade Center and international gem fairs.
Loupe, refractometer, polariscope and UV checks on every stone before listing.
Carat, dimensions, origin and treatment stated on every listing.
Lab reports from GIA, GRS, AIGS, GIT or Lotus available on request.




