To some, they’re simply crystallized formations made from sedimentary or volcanic rock; to others, they’re majestic sources of mystical, nearly otherworldly beauty. In any event, the intricacy of geodes make for some remarkable patterns when put to use in home décor and jewelry. Enjoying a resurgence recalling the geode craze of the 1970’s, they’re popping up in places such as Dransfield & Ross’s Semi-Precious collection of accessories for the home, ranging from bed and bath accoutrements to eye-catching items for the kitchen & dining room. Shown here, 14” x 18” malachite placemats are available for $75.