Rutilated Quartz from Brazil, hand-graded by The Stone Atlas, lot XA5
Origin Novo Horizonte, Bahia, Brazil
Mohs hardness 7 / 10
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Fingernail (2.5) Steel knife (5.5) Diamond (10)

Stone properties

What this stone is, geologically

Crystal system
Trigonal (quartz group)
Mohs hardness
7
Specific gravity
2.65
Refractive index
1.544–1.553
Transparency
Transparent to translucent
Durability
Excellent — daily-wear safe

Macrocrystalline silica forming in pegmatites and hydrothermal cavities. Coloration arises from trace iron, aluminum, or oriented inclusions.

The lot

Full description

A hand-graded parcel of cabochons of rutilated quartz from Novo Horizonte, Bahia, Brazil, calibrated to the 14–21 mm working range. Sold by the parcel, weighed in carats, treatments disclosed.

About this lot

Origin: Novo Horizonte, Bahia, Brazil.

Parcel: Minimum guaranteed 10 ct total weight. Each parcel typically contains 1–2 pieces within the listed size range. You pay for guaranteed weight; piece count varies because natural material isn't uniform.

Size: 14–21 mm.

Weight: Minimum 10 ct per parcel (parent lot has 340 ct available).

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

Suggested use

Cabochon settings, lapidary work, or studio display. Durable (Mohs 7).

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 Rutilated Quartz 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 Novo Horizonte, Bahia, Brazil.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: 14–21 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.

4.7 out of 5

33 verified buyers

What buyers say

  1. Lukas

    Provincetown MA

    Verified buyer 127d ago

    Real natural inclusions, just like the listing said

  2. Hugo

    Edinburgh UK

    Verified buyer 132d ago

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

  3. Kenji

    Stockholm Sweden

    Verified buyer 137d ago

    Tracking notifications were perfect. Always knew where my order was

  4. Yasmin

    Auckland NZ

    Verified buyer 142d ago

    Used this for a lapidary class — perfect for what we needed

  5. Olivia

    Boise ID

    Verified buyer 147d ago

    Beautiful stone. Treatment was disclosed up front, exactly as the listing said. That kind of honesty is rare in this trade

  6. Henry

    Toronto Canada

    Verified buyer 152d ago

    Photos don't do this justice. Even better in hand

  7. Cora

    Madrid Spain

    Verified buyer 157d ago

    Beautiful. Will order again

  8. Anja

    Bangalore India

    Verified buyer 162d ago

    Stone is exactly the size and weight described

  9. Anjali

    Santa Fe NM

    Verified buyer 2d ago

    Beautiful color in natural light. Lamp light brings out a different character

  10. Ahmed

    Athens GA

    Verified buyer 7d ago

    Arrived faster than expected, tracked the whole way. The kraft box with the wax seal is a beautiful touch

  11. Marcus

    Zurich Switzerland

    Verified buyer 12d ago

    Atlas standard is real. Treatment honesty matters

  12. Charlotte

    Singapore

    Verified buyer 17d ago

    Set this into a pendant for my partner. They love it

  13. Theo

    Austin TX

    Verified buyer 22d ago

    Beautiful piece. Couldn't be happier

  14. Margot

    Ann Arbor MI

    Verified buyer 27d ago

    The shipping was insured and tracked end-to-end. Felt safe ordering

  15. Hiroshi

    Bordeaux France

    Verified buyer 32d ago

    Bought this for a custom ring setting. The depth of color is gorgeous and the size is perfect

  16. Catalina

    Prague Czechia

    Verified buyer 37d ago

    Slightly smaller than I imagined but the quality is great

  17. Aisha

    Mexico City Mexico

    Verified buyer 42d ago

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

  18. Liam

    Hudson NY

    Verified buyer 47d ago

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

  19. Eliza

    Brighton UK

    Verified buyer 52d ago

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

  20. Lucia

    Copenhagen Denmark

    Verified buyer 57d ago

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

  21. Astrid

    Dubai UAE

    Verified buyer 62d ago

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

  22. Camila

    Charleston SC

    Verified buyer 67d ago

    Slightly smaller than I imagined but the quality is great

  23. Amara

    Vancouver Canada

    Verified buyer 72d ago

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

  24. Sophia

    Lisbon Portugal

    Verified buyer 77d ago

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

  25. Caleb

    Bangkok Thailand

    Verified buyer 82d ago

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

  26. Stefan

    Burlington VT

    Verified buyer 87d ago

    Exactly what I needed for my project

  27. Léa

    Iowa City IA

    Verified buyer 92d ago

    Working on a custom necklace; this is the centerpiece

  28. Hana

    Rome Italy

    Verified buyer 97d ago

    Lovely stone, lovely service. I'll order again

  29. Khalid

    Hong Kong

    Verified buyer 102d ago

    Perfect for a setting I'm working on

  30. James

    Brooklyn NY

    Verified buyer 107d ago

    GIA certificate option was the deciding factor. Beautiful natural stone

  31. Harper

    Berkeley CA

    Verified buyer 112d ago

    The provenance information was thorough and honest

  32. Levi

    Berlin Germany

    Verified buyer 117d ago

    First gemstone purchase online. Won't be the last

  33. Sofia

    Tokyo Japan

    Verified buyer 122d ago

    Real provenance, real disclosure. The Atlas standard is a real standard