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Cushion Buff Top Double Bevel Genuine Black Onyx With Hole - Otto Frei
Otto Frei

Cushion Buff Top Double Bevel Genuine Black Onyx With Hole

Part # 947-464 Only 2 left Weight <0.1 lb / <5 g
$6.25
Select Stone Size: 16mmx12mm
Volume pricing
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5 – 9 10% off $5.62 $0.63
10 + 12% off $5.50 $0.75
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Availability Sold out

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Description

Black Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of microscopic 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 characteristic deep, uniform black color. Black Onyx has long been one of the top-selling chalcedony gemstones and was a hallmark material in Art Deco jewelry design. These genuine cabochons feature a cushion buff-top double-bevel cut with a pre-drilled hole, making them well suited for a wide range of jewelry fabrication applications.

Features

  • Genuine black onyx — dyed black chalcedony
  • Cushion buff-top double-bevel cut profile
  • Pre-drilled hole for easy setting or stringing
  • Uniform opaque black color throughout
  • Rich history in Art Deco and fine jewelry traditions
  • Care: Clean with warm, soapy water; ultrasonic and steam cleaning are generally safe

Specifications

Stone Type Black Onyx (dyed black chalcedony)
Treatment Dyed
Color Uniform opaque black
Cut Cushion buff-top double bevel
Feature With hole
Cleaning Warm soapy water; ultrasonic and steam cleaning are generally safe

Available Options

Part # Stone Size
947-463 14mm x 12mm
947-464 16mm x 12mm

Specifications

Brand
Otto Frei
Part #
947-464
Type
Cabochon
Dimensions
0.1 in x 0.1 in x 0.1 in
Stone Type
Black Onyx (dyed black chalcedony)
Treatment
Dyed
Color
Uniform opaque black
Cut
Cushion buff-top double bevel
Feature
With hole
Cleaning
Warm soapy water; ultrasonic and steam cleaning are generally safe
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

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