Black Tourmaline Quartz Faceted Drop Cab Claw Set Sterling Silver Ring Size 7

Among the books, decks, and stones on 14th Street is this ring: Black Tourmaline Quartz Faceted Drop Cab Claw Set Sterling Silver Ring Size 7 (shop SKU SBBTQR108).

Black tourmaline, or schorl, is an iron-rich tourmaline, typically opaque and striated. In crystal traditions, it is associated with protection and grounding. Those ideas belong to folklore and personal practice, not to any medical claim. Sterling silver is 92.5% silver, often stamped .925; like all silver, it can tarnish over time and can be brightened with a soft polishing cloth. The ring size is 7, as stated in the title.

Because the material is natural, its color and pattern vary from piece to piece. The title describes a claw (prong) setting that holds the stone. The title describes the stone as faceted. The title describes a cabochon, a smoothly rounded, unfaceted cut.

Store jewelry dry and away from lotions, perfume, and harsh cleaners to keep it looking its best.

• SKU: SBBTQR108

Find it at Namaste Bookshop, 2 West 14th Street, a short walk from Union Square in Manhattan, or order it online.