Sardonic

sar·don·ic | sär-ˈdä-nik

noun

A variety of onyx consisting of alternating layers of charred and white chalcedony

Sardonic or sardonyx as it is sometimes written, is a variety of onyx that consists of alternating layers of chalcedony - coming in a charred brown and white color. Its history dates back to Ancient Egypt when the stones were used to create intaglios and cameos. The stone was commonly worn in Ancient Rome alongside images and cameos of Venus and Mars and was a popular stone for Romans seals because of the utility of the stone. Sardonyx is the August birthstone and is commonly presented as beads for necklaces and bracelets.

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S Safety Catch Salt-and-Pepper Diamond Sand Casting Sandblasted Sapphire Sardonic Satin finish Sautoir Scarab Scatter Pin Scepter Screw Seal Sedimentary Seed Bead Seed Pearl Semi-Precious Gemstone Semi-Precious Stones Setting Sevigne Shagreen Shamrock Shank Shared Prong Shield Shoulder Signet Silver Tone Simulated Stones Single-cut Diamonds Slide Smoky Quartz Smoky Topaz Snake Chain Solder Soldering Solid Diamond Solitaire Sparkle Spinel Split Prong Split Ring Split Shank Spring Ring Square Band Square Cut Stabilized Turquoise Stackable Rings Stainless Steel Stamping Star 129 Step Cut Sterling Silver Stomacher Strap Necklace Strapwork Stud Super Fit Ring Swag Symmetry Synthetic Gemstones