4 Line Moonstone from India, hand-graded by The Stone Atlas, lot XA86
Origin Karnataka, 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 cabochon of 4 line moonstone from Karnataka, India, calibrated to the 13–20 mm working range. Sold as a single piece, weighed in carats, treatments disclosed.

About this lot

Origin: Karnataka, India.

Format: One specific cabochon, weighing approximately 11 ct, hand-graded from a parent lot of 1058 ct. Each stone is similar in size and grade; you receive one cab matched to the listing.

Size: 13–20 mm.

Weight: ~11 ct per piece.

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 4 Line Moonstone 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 Karnataka, 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: 13–20 mm. Listed weight: 11 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.

4.5 out of 5

21 verified buyers

What buyers say

  1. Levi

    Sydney Australia

    Verified buyer 82d ago

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

  2. Sofia

    Boulder CO

    Verified buyer 87d ago

    Highly recommend

  3. Priya

    Lexington KY

    Verified buyer 92d ago

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

  4. Layla

    Florence Italy

    Verified buyer 97d ago

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

  5. Emma

    Taipei Taiwan

    Verified buyer 102d ago

    Color is a touch lighter than the listing photo shows, but still lovely

  6. Lucas

    Asheville NC

    Verified buyer 107d ago

    Took a few days longer to arrive than I expected, but worth the wait

  7. Ruth

    Park City UT

    Verified buyer 112d ago

    Good stone, small surface character not really visible in the photos

  8. Klara

    Munich Germany

    Verified buyer 117d ago

    Nice piece, slightly more inclusions than I expected — but consistent with the listed grade

  9. Jun

    Kyoto Japan

    Verified buyer 122d ago

    Slightly smaller than I imagined but the quality is great

  10. Renata

    Marrakech Morocco

    Verified buyer 127d ago

    Beautiful stone, would have liked one or two more detailed photos before ordering

  11. Zola

    Bend OR

    Verified buyer 132d ago

    Color is a touch lighter than the listing photo shows, but still lovely

  12. Isabella

    Paris France

    Verified buyer 137d ago

    Took a few days longer to arrive than I expected, but worth the wait

  13. Jonas

    Helsinki Finland

    Verified buyer 142d ago

    Good stone, small surface character not really visible in the photos

  14. Ines

    São Paulo Brazil

    Verified buyer 147d ago

    Nice piece, slightly more inclusions than I expected — but consistent with the listed grade

  15. Yuki

    Taos NM

    Verified buyer 152d ago

    Beautiful work, beautiful packaging

  16. Mateo

    London UK

    Verified buyer 157d ago

    Hand-graded, exactly as promised. Some natural inclusions only visible with a loupe

  17. Tinashe

    Brussels Belgium

    Verified buyer 162d ago

    Five stars without hesitation

  18. Noah

    Melbourne Australia

    Verified buyer 2d ago

    Treatment honesty is genuinely refreshing in this trade. Stone arrived perfectly

  19. Abigail

    Madison WI

    Verified buyer 7d ago

    Exactly as described. Color is even better in person than the photo

  20. Henrik

    Portland ME

    Verified buyer 12d ago

    Real natural inclusions, just like the listing said

  21. Matteo

    Barcelona Spain

    Verified buyer 17d ago

    Compared this to two others I bought from competitors. Clearly better saturation. Stone Atlas is now my go-to