London designer Stephen Webster's playful Fly by Night earrings are winged beauties in pink opal quartz and diamond pavé, and Boulder, Colo.-based Todd Reed's jagged diamond drops are more elegantly raw, resembling jewel-encrusted stalactites.

L.A. designer Kimberly McDonald's one-of-a-kind Specimen ring is a natural wonder of quartz clusters, and Suzanne Felsen's sapphire, emerald and ruby necklace is a personalized string of stones (each gemstone is hand-selected by Felsen, who is based in L.A., so styles will vary).

A pink amethyst dome ring encrusted with rubies, by Brazilian Fernando Jorge, calls to mind a phosphorescent underwater life form, as do his electrifying opal bolt earrings.

Even bolder at 4 by 4 inches, Alexis Bittar's trembling blossom pin is not for a wallflower, nor is Kara Ross' chunky malachite cuff, a polished slice of the powerful green stone embellished with blue topaz and diamonds. On the softer side, French designer Aurélie Bidermann's antique gold lace cuff, with beehive-like cutwork and champagne diamonds, would make a honey of a future heirloom.