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Antique Buff Top Single Bevel Genuine Black Onyx - Otto Frei
Otto Frei

Antique Buff Top Single Bevel Genuine Black Onyx

Part # 947-112 Out of Stock Weight <0.1 lb / <5 g
$4.50
Select Size: 12x10mm
Volume pricing
Total qty Discount Per unit You save
1 – 2 – $4.50 –
3 – 4 5% off $4.27 $0.23
5 – 9 10% off $4.05 $0.45
10 + 12% off $3.96 $0.54
Add 2 more for 5% off, saves another $0.23 each.

Availability Sold out

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Description

Black Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of tiny quartz crystals not visible to the naked eye. Natural black chalcedony is exceptionally rare — virtually all black chalcedony on the market is grey chalcedony that has been chemically treated to achieve its signature deep, uniform black color. Black Onyx is the top-selling chalcedony in the gemstone market and has a storied history in Art Deco jewelry design. These genuine cabochons are offered in calibrated sizes, making them well-suited for setting in standard mountings.

Features

  • Genuine black onyx (dyed black chalcedony)
  • Buff top, single bevel cabochon profile
  • Uniform opaque black color throughout
  • Calibrated sizes for consistent fit in standard settings
  • Treatment: Dyed
  • Clean with warm, soapy water; ultrasonic and steam cleaning are generally safe

Specifications

Stone Type Genuine Black Onyx (Dyed Black Chalcedony)
Cut Style Buff Top, Single Bevel Cabochon
Color Uniform Opaque Black
Treatment Dyed
Sizing Type Calibrated
Care Warm soapy water; ultrasonic and steam cleaning generally safe

Available Options

Part # Size
947-112 12x10mm
947-113 14x12mm
947-114 16x12mm

Specifications

Brand
Otto Frei
Part #
947-112
Type
Cabochon
Dimensions
0.1 in x 0.1 in x 0.1 in
Stone Type
Genuine Black Onyx (Dyed Black Chalcedony)
Cut Style
Buff Top, Single Bevel Cabochon
Color
Uniform Opaque Black
Treatment
Dyed
Sizing Type
Calibrated
Care
Warm soapy water; ultrasonic and steam cleaning generally safe
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

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