Jewelry Care Carnelian Carnelian is placed in the sun to change brown tints to red.

Click on the gem name for more information about that stone. Alexandrite Amber Amethyst Aquamarine Aventurine Bloodstone Carnelian Chrysoprase Citrine Coral Diamond Emerald Garnet Jasper Kunzite Lapis Lazuli Malachite Moonstone Obsidian Onyx Opal Pearl Peridot Quartz Rose Quartz Ruby Sapphire Tanzanite Tiger Eye Quartz Topaz Tourmaline Turquoise Zircon