These polished Black Obsidian Scrying Mirrors are made from 100% natural obsidian and is perfect for all your scrying and divination work. Because these are made with 100% natural materials some extremely minor imperfections are to be expected. The best piece will be chosen for you!Approximately 5 1/2 inches (approximately 635 grams total weight)Review emailed from a customer: "Extremely high quality-exactly as described and pictured-very fast shipping." TOTAL OF 12 PIECES SOLD FROM OUR IN-HOUSE SHOP ALONE!