Black Onyx
Black Onyx — 8.51ct Oval Cabochon
An 8.51 carat black onyx cabochon with a deep, uniform black color and glassy polish.
$90
In stock, ships in 2–3 business days
Insured shipping, 2–3 business days
30-day returns
Secure checkout
Good
Solid commercial quality with visible character consistent with its price point.
GoodCollector
Gemstone Specifications
- 8.51 ct
- Dimensions
- 14.0 × 10.0 × 5.6 mm
- Shape
- Oval
- Cabochon
- Deep black
- Opaque
- Brazil
- Dyed
- Natural
- Inventory ID
- MK-ONY-8510
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Gemstone Report
No third-party certificate
- Origin
- Brazil
- Treatment
- Dyed
This stone is sold with our standard authenticity disclosure but does not carry a third-party lab report.
Journey of Your Gem
- 1
Origin
Sourced from Brazil, disclosed here as reported by our supplier network.
- 2
Sorting & Selection
Rough or pre-formed material is sorted for color, clarity, and cutting potential.
- 3
Cutting & Polishing
Faceted or cabochon-cut by experienced lapidaries to maximize the stone's natural qualities.
- 4
Quality Inspection
Assessed against our published grading criteria for color, clarity, cut, and carat weight.
- 5
Certification
Documented with the certificate type shown on this listing — third-party lab report or in-house report.
- 6
Your Collection
Packaged and insured for shipment directly to you.
