Just sold
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Stone properties
Opaque chalcedony pigmented by iron, manganese, and other inclusions. Patterned varieties record sediment cycles.
The lot
A hand-graded cabochon of mookaite jasper from Cilacap, Central Java, Indonesia, calibrated to the 24–27 mm working range. Sold as a single piece, weighed in carats, treatments disclosed.
Origin: Cilacap, Central Java, Indonesia.
Format: One specific cabochon, weighing approximately 13 ct, hand-graded from a parent lot of 537 ct. Each stone is similar in size and grade; you receive one cab matched to the listing.
Size: 24–27 mm.
Weight: ~13 ct per piece.
Treatment: None. 100% natural, untreated material. Disclosed on every listing — that's the Atlas standard.
Lapidary projects, robust everyday-wear jewellery, or studio display. Durable (Mohs 6.5+).
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 Mookaite Jasper 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 Cilacap, Central Java, Indonesia.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: 24–27 mm. Listed weight: 13 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.
4.9 out of 5
25 verified buyers
What buyers say
James
Burlington VT
I've ordered from a lot of online gemstone dealers — this is the first time the stone matched the listing photo
Harper
Iowa City IA
Highly recommend
Levi
Rome Italy
Smaller than I imagined but quality is high — exactly as listed
Sofia
Hong Kong
Fast shipping, beautiful packaging, accurate listing. What more can you ask
Priya
Brooklyn NY
Bought as a 10-year anniversary gift. Stunning
Layla
Berkeley CA
The 30-day inspection window made me comfortable ordering at this price point. Didn't need to use it
Emma
Berlin Germany
Exactly what I needed for my project
Lucas
Tokyo Japan
Working on a custom necklace; this is the centerpiece
Ruth
Cape Town South Africa
Lovely stone, lovely service. I'll order again
Klara
Carmel CA
Perfect for a setting I'm working on
Jun
Dublin Ireland
GIA certificate option was the deciding factor. Beautiful natural stone
Renata
Oslo Norway
The provenance information was thorough and honest
Zola
Tel Aviv Israel
First gemstone purchase online. Won't be the last
Isabella
Sedona AZ
Real provenance, real disclosure. The Atlas standard is a real standard
Jonas
Montréal Canada
Beautiful work, beautiful packaging
Ines
Amsterdam Netherlands
Hand-graded, exactly as promised. Some natural inclusions only visible with a loupe
Yuki
Sydney Australia
Five stars without hesitation
Mateo
Boulder CO
Treatment honesty is genuinely refreshing in this trade. Stone arrived perfectly
Tinashe
Lexington KY
Exactly as described. Color is even better in person than the photo
Noah
Florence Italy
Real natural inclusions, just like the listing said
Abigail
Taipei Taiwan
Compared this to two others I bought from competitors. Clearly better saturation. Stone Atlas is now my go-to
Henrik
Asheville NC
Tracking notifications were perfect. Always knew where my order was
Matteo
Park City UT
Used this for a lapidary class — perfect for what we needed
Rohan
Munich Germany
Beautiful stone. Treatment was disclosed up front, exactly as the listing said. That kind of honesty is rare in this trade
Nour
Kyoto Japan
Photos don't do this justice. Even better in hand
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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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