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Octagon Flat Top Double Bevel Genuine Black Onyx - Otto Frei
Otto Frei

Octagon Flat Top Double Bevel Genuine Black Onyx

Part # 947-F43 Only 1 left Weight <0.1 lb / <5 g
$9.00
Select Size: 14x12mm
Volume pricing
Total qty Discount Per unit You save
1 – 2 – $9.00 –
3 – 4 5% off $8.55 $0.45
5 – 9 10% off $8.10 $0.90
10 + 12% off $7.92 $1.08
Add 2 more for 5% off, saves another $0.45 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 rich, uniform black color. Black Onyx is the top-selling chalcedony in the jewelry market and has a long history of use, including its prominence in Art Deco jewelry design.

These genuine Black Onyx cabochons feature an octagon flat top double bevel cut, making them well suited for rings, pendants, brooches, and other fine jewelry settings. Clean with warm, soapy water. Use of an ultrasonic or steam cleaner is generally safe.

Features

  • Genuine Black Onyx (dyed black chalcedony)
  • Octagon flat top with double bevel profile
  • Uniform opaque black color throughout
  • Chemically dyed treatment for consistent appearance
  • Suitable for use in Art Deco-inspired and contemporary jewelry designs
  • Safe to clean with warm soapy water; ultrasonic and steam cleaning generally safe

Specifications

Stone Type Black Onyx (dyed black chalcedony)
Cut Style Octagon flat top, double bevel
Color Uniform opaque black
Transparency Opaque
Treatment Dyed
Cleaning Warm soapy water; ultrasonic and steam generally safe

Available Options

Part # Size
947-F42 12x10mm
947-F43 14x12mm

Specifications

Brand
Otto Frei
Part #
947-F43
Type
Cabochon
Dimensions
0.1 in x 0.1 in x 0.1 in
Stone Type
Black Onyx (dyed black chalcedony)
Cut Style
Octagon flat top, double bevel
Color
Uniform opaque black
Transparency
Opaque
Treatment
Dyed
Cleaning
Warm soapy water; ultrasonic and steam generally safe
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

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