Skip to content
Contact Us Jewelry School Partners Help Center Submit Tax Exemption Quick Order
Octagon Flat Top Single Bevel Genuine Black Onyx - Otto Frei
Otto Frei

Octagon Flat Top Single Bevel Genuine Black Onyx

Part # 947-F32 Only 3 left Weight <0.1 lb / <5 g
$3.48
Select Size: 12x10mm
Volume pricing
Cart status You already have 1 qualifying item in cart. Adding this one builds your volume total.
1 in cart + 1 here = 2
Total qty Discount Per unit You save
1 – 2 – $3.48 –
3 – 4 5% off $3.31 $0.17
5 – 9 10% off $3.13 $0.35
10 + 12% off $3.06 $0.42
Add 1 more for 5% off, saves another $0.17 each.

Availability Sold out

Restock alerts are coming soon. For now, check back or ask us at [email protected]. We'll email you when it's back in stock. We'll email and text you when it's back in stock. Restock alerts are off for this item. It stays on My List. That didn't save. Try again. That didn't go through. Try again. Check the mobile number and try again. Tick the box to get texts. Save it to a list first. Good news: it's in stock now. Turn off an alert you no longer need, then try again. Couldn't save in this browser. Ask us when it's due back: [email protected]

Description

Black Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of tiny crystals of quartz that are not visible to the naked eye. Natural black chalcedony is so rare that virtually all black chalcedony on the market is grey chalcedony that has been chemically treated to achieve its signature shiny black color. Black Onyx is the top-selling chalcedony in the jewelry market and was a hallmark stone of Art Deco design. These genuine octagon flat top single bevel cabochons deliver a uniform, opaque black ideal for rings, pendants, and statement pieces.

Features

  • Genuine black onyx (dyed black chalcedony)
  • Octagon flat top with single bevel profile
  • Uniform opaque black color throughout
  • Classic cut suited for Art Deco and contemporary designs
  • Safe to clean with warm, soapy water
  • Generally safe for use with ultrasonic and steam cleaners

Specifications

Stone Type Genuine Black Onyx
Material Dyed black chalcedony
Treatment Dyed
Color Uniform opaque black
Shape Octagon flat top, single bevel
Care Warm soapy water; ultrasonic and steam cleaners generally safe

Available Options

Part # Size
947-F32 12x10mm
947-F33 14x12mm
947-F34 16x12mm

Specifications

Brand
Otto Frei
Part #
947-F32
Type
Cabochon
Dimensions
0.1 in x 0.1 in x 0.1 in
Stone Type
Genuine Black Onyx
Material
Dyed black chalcedony
Treatment
Dyed
Color
Uniform opaque black
Shape
Octagon flat top, single bevel
Care
Warm soapy water; ultrasonic and steam cleaners generally safe
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

Reviews

No reviews yet. Be the first to share your experience with this product.

Write a review ↓