UPDATE DECEMBER 16: I have added a hint to the Franklin Grossular!
Another clue: Look up Nacimiento as it pertains to the Southwest
Contest: Win Free shipping for your next order. Consider the three minerals in the shop, the New Jersey Grossular, the Arizona Dioptase and the New Mexico Copper Wood. These three share a theme. Send your best guess to firstname.lastname@example.org. The first two correct answers will receive a coupon for free US shipping with their next purchase. If you are not in the US you will receive a credit equivalent to the cost of US postage. The answer and winners will be announced in the mid-month shop update.