Size 10 1/2 Aussie Lemon Chrysoprase pure silver ring by John Hablitschek. 98.2 pure silver

Lemon Chrysoprase, the citrusy cousin in the gemstone family, also goes by the flashy names Citron Chrysoprase or Yellow Chrysoprase. This Chalcedony Quartz variety owes its lemon-to-lime spectrum to nickel's cameo. It's the iron oxide, though, that steals the show with its brown veins, giving each stone a fingerprint of earthy stripes. These veins are quite the chameleons, shifting from espresso dark to a lighter, more cinnamon-toast crunch shade. No two Lemon Chrysoprases are the same; they're like snowflakes, but less chilly and more sparkly.

Hailing from the lands down under and beyond—Australia, Russia, Brazil, Tanzania, and Poland—this gem is a solid 7 on the Mohs scale of hardness, making it both tough and treasured. Rare enough to be precious, Lemon Chrysoprase is the gemstone equivalent of a four-leaf clover, rumored to sprinkle a bit of luck and a dash of prosperity on those who wear it.