11 mm to 4 mm wide. If you like what you see please visit my store tenohsea for more items you might love. The item "Native American Santo Domingo Turquoise Red Coral Heishi Necklace" is in sale since Monday, October 29, 2018. This item is in the category "Jewelry & Watches\Ethnic, Regional & Tribal\Native American\Necklaces & Pendants".The seller is "tenohsea" and is located in San Ramon, California. This item can be shipped worldwide.