Agate Alexandrite Amber amethyst aquamarine Aventurine beryl Black Tourmaline Bloodstone Calcite Carnelian Chrysoprase Citrine Corundum crystal Diamant Diamond Donghai Crystal Emerald Fluorite Garnet Jade Jaspe Jasper jewelry Labradorite Malachite Moonstone natural quartz Obsidian Opal pearl Peridot Quartz Rhodochrosite Rock Crystal Ruby Sapphire smart jewelry Spinel Tanzanite Topaz Tourmaline Turquoise Zircon

Each entry might include details like:

• The crystal’s physical properties (color, shape, weight, clarity)
• Grading certification by ICIA
• A brief description of its uses or benefits (if applicable)
• Price range (if for sale)