Just sold
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Stone properties
Silicate family with several species — almandine, pyrope, spessartine, tsavorite. Forms in metamorphic schists and pegmatites.
The lot
A hand-graded parcel of cabochons of red garnet star from Umba Valley, Tanzania, calibrated to the 8–14 mm working range. Sold by the parcel, weighed in carats, treatments disclosed.
Origin: Umba Valley, Tanzania.
Parcel: Minimum guaranteed 10 ct total weight. Each parcel typically contains 1–3 pieces within the listed size range. You pay for guaranteed weight; piece count varies because natural material isn't uniform.
Size: 8–14 mm.
Weight: Minimum 10 ct per parcel (parent lot has 489 ct available).
Treatment: None. 100% natural, untreated material. Disclosed on every listing — that's the Atlas standard.
Setting in jewellery — ring bezels, pendant cabochons, statement earrings. Dome and polish are jewellery-ready.
Hand-graded in our US studio. Treatments disclosed on every listing, no exceptions. Shipped insured from the US since 1995. Returns within 14 days if the stone in hand doesn't match the listing.
Shipping & returns
Common questions
No. This Red Garnet Star is 100% natural with no heat, diffusion, dyeing, or fracture-filling treatment. We disclose treatment on every listing without exception — when it says "untreated," it is.
This piece is from Umba Valley, Tanzania.When we know the specific city or mine, we tag it on every listing. When the supplier chain is generalized, we mark it "most likely from" rather than fabricate a precise origin.
Yes. GIA certification is available as a $95 add-on after checkout. Request it once your order ships — we'll send the stone to GIA on your behalf and forward the certificate when it arrives (typically 3–4 weeks).
Every stone comes with a 30-day inspection window. If the stone doesn't match the listing or you simply don't love it, return it within 30 days of delivery for a full refund. We cover return shipping. No restocking fees, no questions.
Orders ship from the US within 1–2 business days. Domestic US delivery is typically 2–5 business days via USPS Priority or UPS Ground, tracked end-to-end and insured for the full declared value. International shipping is available at checkout.
Listed size for this piece: 8–14 mm. Listed weight: 10 ct ct. All sizes and weights are hand-measured. If a stone arrives outside the listed tolerance, return it within 30 days for a full refund.
Yes. Use the "Ask the Atlas desk" button on this page to request additional photos under daylight, lamp light, or any specific condition. We typically reply within one business day with photos attached.
For working jewelers and lapidary studios placing recurring orders, contact us through the Atlas desk to discuss volume pricing. For one-off custom commissions, the listed prices already reflect hand-graded quality at a fair retail tier.
4.7 out of 5
22 verified buyers
What buyers say
Hugo
Mumbai India
Real natural inclusions, just like the listing said
Kenji
Bozeman MT
Compared this to two others I bought from competitors. Clearly better saturation. Stone Atlas is now my go-to
Yasmin
Jackson WY
Tracking notifications were perfect. Always knew where my order was
Olivia
Vienna Austria
Used this for a lapidary class — perfect for what we needed
Henry
Seoul Korea
Beautiful stone. Treatment was disclosed up front, exactly as the listing said. That kind of honesty is rare in this trade
Cora
Portland OR
Photos don't do this justice. Even better in hand
Anja
Chapel Hill NC
Beautiful. Will order again
Anjali
Lyon France
Stone is exactly the size and weight described
Ahmed
Reykjavik Iceland
Beautiful color in natural light. Lamp light brings out a different character
Marcus
Buenos Aires Argentina
Arrived faster than expected, tracked the whole way. The kraft box with the wax seal is a beautiful touch
Charlotte
Provincetown MA
Atlas standard is real. Treatment honesty matters
Theo
Edinburgh UK
Set this into a pendant for my partner. They love it
Margot
Stockholm Sweden
Beautiful piece. Couldn't be happier
Hiroshi
Auckland NZ
The shipping was insured and tracked end-to-end. Felt safe ordering
Catalina
Boise ID
Bought this for a custom ring setting. The depth of color is gorgeous and the size is perfect
Aisha
Toronto Canada
Will be back for more. Quality is consistent
Liam
Madrid Spain
My third order from the Atlas. Consistency is excellent
Eliza
Bangalore India
Slightly smaller than I imagined but the quality is great
Lucia
Santa Fe NM
Beautiful stone, would have liked one or two more detailed photos before ordering
Astrid
Athens GA
Color is a touch lighter than the listing photo shows, but still lovely
Camila
Zurich Switzerland
Took a few days longer to arrive than I expected, but worth the wait
Amara
Singapore
Good stone, small surface character not really visible in the photos
Recently viewed
The Atlas standard
Five things we promise on the listing, in the package, and after the sale — every time.
Earth-mined. Never lab-grown, never synthetic, never simulated. The only kind of stone we sell — without exception, since 1995.
Country and city when we know it. “Most likely from” when the chain is generalized. Never invented.
Heat, diffusion, dyeing, fracture-filling — declared on every listing. Or marked untreated, when we can confirm it.
Hold every stone in your own light. Return for any reason, free. No questions, no restocking fee. We pay the shipping.
From the US, end-to-end tracked, fully insured to your door. 1–2 days to pack, 2–5 in transit. GIA certification on request.
Just sold
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