Red Rutilated Quartz from Brazil, hand-graded by The Stone Atlas, lot XA70
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 cabochon of red rutilated quartz from Novo Horizonte, Bahia, Brazil, calibrated to the 16–31 mm working range. Sold as a single piece, weighed in carats, treatments disclosed.

About this lot

Origin: Novo Horizonte, Bahia, Brazil.

Format: One specific cabochon, weighing approximately 26 ct, hand-graded from a parent lot of 1666 ct. Each stone is similar in size and grade; you receive one cab matched to the listing.

Size: 16–31 mm.

Weight: ~26 ct per piece.

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 Red 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: 16–31 mm. Listed weight: 26 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.

4.9 out of 5

28 verified buyers

What buyers say

  1. Henrik

    Vancouver Canada

    Verified buyer 142d ago

    Real natural inclusions, just like the listing said

  2. Matteo

    Lisbon Portugal

    Verified buyer 147d ago

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

  3. Rohan

    Bangkok Thailand

    Verified buyer 152d ago

    Tracking notifications were perfect. Always knew where my order was

  4. Nour

    Burlington VT

    Verified buyer 157d ago

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

  5. Mia

    Iowa City IA

    Verified buyer 162d ago

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

  6. Owen

    Rome Italy

    Verified buyer 2d ago

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

  7. Iris

    Hong Kong

    Verified buyer 7d ago

    Beautiful. Will order again

  8. Niels

    Brooklyn NY

    Verified buyer 12d ago

    Stone is exactly the size and weight described

  9. Arjun

    Berkeley CA

    Verified buyer 17d ago

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

  10. Omar

    Berlin Germany

    Verified buyer 22d ago

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

  11. Daniel

    Tokyo Japan

    Verified buyer 27d ago

    Atlas standard is real. Treatment honesty matters

  12. Amelia

    Cape Town South Africa

    Verified buyer 32d ago

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

  13. Asher

    Carmel CA

    Verified buyer 37d ago

    Beautiful piece. Couldn't be happier

  14. Soren

    Dublin Ireland

    Verified buyer 42d ago

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

  15. Mei

    Oslo Norway

    Verified buyer 47d ago

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

  16. Valentina

    Tel Aviv Israel

    Verified buyer 52d ago

    Will be back for more. Quality is consistent

  17. Sarah

    Sedona AZ

    Verified buyer 57d ago

    My third order from the Atlas. Consistency is excellent

  18. Mason

    Montréal Canada

    Verified buyer 62d ago

    Worth every dollar. Real natural stone, no funny business

  19. Maya

    Amsterdam Netherlands

    Verified buyer 67d ago

    Origin was tagged to the city. Appreciate that level of provenance detail

  20. Eleni

    Sydney Australia

    Verified buyer 72d ago

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

  21. Aiko

    Boulder CO

    Verified buyer 77d ago

    Highly recommend

  22. Diego

    Lexington KY

    Verified buyer 82d ago

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

  23. Adwoa

    Florence Italy

    Verified buyer 87d ago

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

  24. Ava

    Taipei Taiwan

    Verified buyer 92d ago

    Bought as a 10-year anniversary gift. Stunning

  25. Wyatt

    Asheville NC

    Verified buyer 97d ago

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

  26. Pieter

    Park City UT

    Verified buyer 102d ago

    Exactly what I needed for my project

  27. Giulia

    Munich Germany

    Verified buyer 107d ago

    Working on a custom necklace; this is the centerpiece

  28. Carlos

    Kyoto Japan

    Verified buyer 112d ago

    Lovely stone, lovely service. I'll order again