Beads > Gemstone Beads > Black Onyx > Discs


Onyx, a banded variety of the quartz family, is mined in Brazil, India, Madagascar, U.S.A and Uruguay. The only difference between onyx and other banded agates is that the stripes of onyx are even and uniform. Black onyx's uniform black color is achieved by dyeing and or by heat treating. The name Onyx is a Greek word meaning claw or fingernail, as it was once believed that onyx was created from the goddess Venus's fingernail clippings. Onyx and Sardonyx are essentially the same stone: onyx will have a black base, and sardonyx has a brown base. Also, be sure to check out our lovely selection of Onyx pendants!

Item Details:

Black Onyx Flat Coin 12mm 32 Piece Per Strand Average
Picture of 12ST401-C, Black Onyx Flat Coin 12mm 32 Piece Per Strand Average

1 ST $23.95 ($23.95 per ST)

2 ST $44.10 ($22.05 per ST)

3 ST $57.90 ($19.30 per ST)

4 ST $74.10 ($18.52 per ST)


Shape: Discs
Size: 12mm
Material: Onyx
Made in: China
Description: Onyx and Sardonyx are both a banded variety of chalcedony agate. They differ from other banded agates only in the uniformity of their stripes. Much of the black onyx on the market is dyed or heat treated to achieve a solid black color, making it nearly impossible to differentiate between black onyx and other solid black agates. Sardonyx typically has a red or a brown base with uniform banding. The name onyx stems from a Greek word meaning â€_Äúclawâ€_ÄÃ_ or â€_Äúfingernailâ€_ÄÃ_, as it was once fabled that onyx was created from the goddess Venusâ€_Äôs fingernail clippings.
Showroom Aisle: 1
Showroom Section: M

Visit Our Blog!

Loose Ends Blog

Seed Beads

Preciosa Ornela rocaille seed beads are by far our most popular and versatile seed bead available. Preciosa Ornela rocaille seed beads are of superior quality, machine cut, and are highly valued for their use in bead stringing, bead weaving, embroidery and much much more! Preciosa seed beads are proven to be of the upmost value, and demonstrate the highest level of shape consistency.

Vintaj Components

Vintaj Components

Secure Shopping

Shipwreck Beads Inc, Beads, Lacey, WA