These earrings feature our newest pumpkin pieces alongside bluish-lilac tanzanites and beautiful green tourmalines. Tanzanite is found only in a single location on Earth, near Mount Kilimanjaro in Tanzania. Tanzanite is a December birthstone, along with zircon, turquoise, and blue topaz. Tourmaline again offers one of the widest color ranges of any gem species, appearing in virtually every hue, and it is the birthstone of October.