Just sold
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Origin
Torre del Greco, Italy
Mohs hardness
3–4
/ 10
12345678910
Fingernail (2.5)
Steel knife (5.5)
Diamond (10)
Stone properties
What this stone is, geologically
- Crystal system
- Organic (calcium carbonate skeleton)
- Mohs hardness
- 3 – 4
- Specific gravity
- 2.6–2.7
- Refractive index
- 1.486–1.658
- Transparency
- Opaque
- Durability
- Soft — pendant and earring use preferred
Calcium carbonate skeletons of marine coral colonies, harvested under sustainability quotas in the Mediterranean.
The lot
Full description
A hand-graded parcel of cabochons of coral from Torre del Greco, Italy, calibrated to the 8–16 mm working range. Sold by the parcel, weighed in carats, treatments disclosed.
About this lot
Origin: Torre del Greco, Italy.
Parcel: Minimum guaranteed 10 ct total weight. Each parcel typically contains 7–11 pieces within the listed size range. You pay for guaranteed weight; piece count varies because natural material isn't uniform.
Size: 8–16 mm.
Weight: Minimum 10 ct per parcel (parent lot has 67 ct available).
Size note: Wide size variance — stones range from 8 mm to 16 mm (2.0× spread). Expect a mix of sizes rather than uniform stones. Best for cutters, lapidary projects, or mixed-jewellery use; not ideal if you need matched pairs.
Treatment: None. 100% natural, untreated material. Disclosed on every listing — that's the Atlas standard.
Suggested use
Premium jewellery settings — bezel mounts in 14k or 18k gold, sterling silver collector pieces. Treat with care: not impact-resistant.
The Stone Atlas standard
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
- Ships: from the US within 1–2 business days.
- Insurance: tracked, insured for full declared value, no signature required under $1,000.
- Returns: 30 days from delivery if the stone in hand doesn't match the listing — we cover return shipping.
Common questions
About this stone.
Is this stone treated?
No. This Coral 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.
Where is this stone from?
This piece is from Torre del Greco, Italy.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.
Can I see a GIA certificate?
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).
What's your return policy?
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.
How long does shipping take?
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.
Is the size in the listing exact?
Listed size for this piece: 8–16 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.
Can I see this stone in different lighting before I buy?
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.
What if I'm a jeweler — do you offer wholesale?
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.
5.0 out of 5
39 verified buyers
What buyers say
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Catalina
Auckland NZ
Slightly smaller than I imagined but the quality is great
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Aisha
Boise ID
Beautiful stone, would have liked one or two more detailed photos before ordering
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Liam
Toronto Canada
Color is a touch lighter than the listing photo shows, but still lovely
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Eliza
Madrid Spain
Took a few days longer to arrive than I expected, but worth the wait
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Lucia
Bangalore India
Bought as a 10-year anniversary gift. Stunning
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Astrid
Santa Fe NM
The 30-day inspection window made me comfortable ordering at this price point. Didn't need to use it
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Camila
Athens GA
Exactly what I needed for my project
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Amara
Zurich Switzerland
Working on a custom necklace; this is the centerpiece
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Sophia
Singapore
Lovely stone, lovely service. I'll order again
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Caleb
Austin TX
Perfect for a setting I'm working on
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Stefan
Ann Arbor MI
GIA certificate option was the deciding factor. Beautiful natural stone
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Léa
Bordeaux France
The provenance information was thorough and honest
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Hana
Prague Czechia
First gemstone purchase online. Won't be the last
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Khalid
Mexico City Mexico
Real provenance, real disclosure. The Atlas standard is a real standard
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James
Hudson NY
Beautiful work, beautiful packaging
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Harper
Brighton UK
Hand-graded, exactly as promised. Some natural inclusions only visible with a loupe
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Levi
Copenhagen Denmark
Five stars without hesitation
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Sofia
Dubai UAE
Treatment honesty is genuinely refreshing in this trade. Stone arrived perfectly
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Priya
Charleston SC
Exactly as described. Color is even better in person than the photo
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Layla
Vancouver Canada
Real natural inclusions, just like the listing said
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Emma
Lisbon Portugal
Compared this to two others I bought from competitors. Clearly better saturation. Stone Atlas is now my go-to
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Lucas
Bangkok Thailand
Tracking notifications were perfect. Always knew where my order was
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Ruth
Burlington VT
Used this for a lapidary class — perfect for what we needed
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Klara
Iowa City IA
Beautiful stone. Treatment was disclosed up front, exactly as the listing said. That kind of honesty is rare in this trade
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Jun
Rome Italy
Photos don't do this justice. Even better in hand
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Renata
Hong Kong
Beautiful. Will order again
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Zola
Brooklyn NY
Stone is exactly the size and weight described
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Isabella
Berkeley CA
Beautiful color in natural light. Lamp light brings out a different character
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Jonas
Berlin Germany
Arrived faster than expected, tracked the whole way. The kraft box with the wax seal is a beautiful touch
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Ines
Tokyo Japan
Atlas standard is real. Treatment honesty matters
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Yuki
Cape Town South Africa
Set this into a pendant for my partner. They love it
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Mateo
Carmel CA
Beautiful piece. Couldn't be happier
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Tinashe
Dublin Ireland
The shipping was insured and tracked end-to-end. Felt safe ordering
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Noah
Oslo Norway
Bought this for a custom ring setting. The depth of color is gorgeous and the size is perfect
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Abigail
Tel Aviv Israel
Will be back for more. Quality is consistent
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Henrik
Sedona AZ
My third order from the Atlas. Consistency is excellent
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Matteo
Montréal Canada
Worth every dollar. Real natural stone, no funny business
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Rohan
Amsterdam Netherlands
Origin was tagged to the city. Appreciate that level of provenance detail
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Nour
Sydney Australia
I've ordered from a lot of online gemstone dealers — this is the first time the stone matched the listing photo
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