The handles of these Case knives are crafted from an assortment of these materials: Mother-of-Pearl, Black Mother-of-Pearl, Orange Fire Coral, Orange Sponge Apple Coral, Orange Spiny Shell, Apache Boulder Turquoise, White Fire Opal, Blue Fire Opal, Mammoth Tooth, Blue Agate, Purple Spiny Shell, Red Spiny Shell, Green Malachite, Blue Lapis, Red Jasper, Red Quartz, White Quartz, Apache Black Gold, Blue Kingman Turquoise, Denim Lapis, Blue Azurite, Pink Coral, Green Turquoise, Green Jade, Wildhorse Jasper, Green Chrysocolla, and Yellow Oyster Shell.