Rubies, Emeralds, Turquoise…. These are classic gemstones that add a little extra pop and panache to a favorite piece like the Drifter Ring from Merewif. And then there are the gems of the moment: Labradorite, Moonstone, Tourmalated Quartz. They all have a subdued, dreamy quality that ups the cool quotient on any modern jewelry piece like the Lunar Claw or Artemis Ring by Acanthus Jewelry. So pick your preference, be it bright or cool and rock those stones.