They are 9.8mm to 10mm. Hairlines , pits, and fissures are a natural characteristic of coral because of water pressure from the depths of which they grow in, this batch has them. Coral was banned in the early 90s, it is no longer harvested. Making it more sought after than gold.The item "33 Antique Pink Coral Extra Large 10mm Beads Estate Jewelry Chinese" is in sale since Sunday, April 5, 2020. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Retro, Vintage 1930s-1980s\Necklaces & Pendants". The seller is "praczus" and is located in Pompano Beach, Florida. This item can be shipped worldwide.