Will any of these work?
Gemstones: Agate - Amber - Amethyst - Aquamarine - Citrine - Diamond - Emerald - Garnet - Hematite -
Jade - Jasper - Lapis - Obsidian - Onyx - Opal - Pearl - Peridot - Pyrite - Ruby - Sapphire - Sunstone - Tanzanite - Tiger's eye - Topaz - Tourmaline
I kind of like Jade!