Sunstone from India, hand-graded by The Stone Atlas, lot XA30
Origin India
Mohs hardness 66.5 / 10
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Fingernail (2.5) Steel knife (5.5) Diamond (10)

Stone properties

What this stone is, geologically

Crystal system
Monoclinic / triclinic (feldspar group)
Mohs hardness
6 – 6.5
Specific gravity
2.55–2.76
Refractive index
1.518–1.541
Transparency
Transparent to translucent
Durability
Good — settings should protect edges

Feldspar minerals showing adularescence (moonstone), aventurescence (sunstone), or color from copper (amazonite).

The lot

Full description

A hand-graded 2-piece lot of cabochons of sunstone from India, calibrated to the 28–39 mm working range. Sold as one curated lot, weighed in carats, treatments disclosed.

About this lot

Origin: India.

Lot: Curated 2-piece selection sold as a single unit. Total weight approximately 167 ct, hand-photographed exactly as shipped — you receive the stones in the photograph, no substitution.

Size: 28–39 mm.

Weight: 167 ct total (entire lot).

Treatment: None. 100% natural, untreated material. Disclosed on every listing — that's the Atlas standard.

Suggested use

Pendant settings, statement rings, or display — adularescence and aventurescence show best in slow light.

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 Sunstone 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 India.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: 28–39 mm. Listed weight: 167 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.

4.7 out of 5

13 verified buyers

What buyers say

  1. Evelyn

    Copenhagen Denmark

    Verified buyer 97d ago

    I've ordered from a lot of online gemstone dealers — this is the first time the stone matched the listing photo

  2. Lukas

    Dubai UAE

    Verified buyer 102d ago

    Highly recommend

  3. Hugo

    Charleston SC

    Verified buyer 107d ago

    Smaller than I imagined but quality is high — exactly as listed

  4. Kenji

    Vancouver Canada

    Verified buyer 112d ago

    Fast shipping, beautiful packaging, accurate listing. What more can you ask

  5. Yasmin

    Lisbon Portugal

    Verified buyer 117d ago

    Bought as a 10-year anniversary gift. Stunning

  6. Olivia

    Bangkok Thailand

    Verified buyer 122d ago

    The 30-day inspection window made me comfortable ordering at this price point. Didn't need to use it

  7. Henry

    Burlington VT

    Verified buyer 127d ago

    Exactly what I needed for my project

  8. Cora

    Iowa City IA

    Verified buyer 132d ago

    Working on a custom necklace; this is the centerpiece

  9. Anja

    Rome Italy

    Verified buyer 137d ago

    Lovely stone, lovely service. I'll order again

  10. Anjali

    Hong Kong

    Verified buyer 142d ago

    Perfect for a setting I'm working on

  11. Ahmed

    Brooklyn NY

    Verified buyer 147d ago

    GIA certificate option was the deciding factor. Beautiful natural stone

  12. Marcus

    Berkeley CA

    Verified buyer 152d ago

    The provenance information was thorough and honest

  13. Charlotte

    Berlin Germany

    Verified buyer 157d ago

    First gemstone purchase online. Won't be the last