These vintage Navajo Indian silver and turquoise dimensional decorative stamp work butterfly screwback earrings measures approximately 15/16" (2.4 cm) by 7/8" (2.2 cm) and together weigh 6 grams. I have left on the original patina.Like most older Native American jewelry, these are not stamped or hallmarked for silver content. They are sterling or a slightly lower grade of silver. The item "VINTAGE NAVAJO INDIAN SILVER TURQUOISE DIMENSIONAL BUTTERFLY SCREWBACK EARRINGS" is in sale since Monday, March 3, 2014. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Vintage Ethnic/Regional/Tribal\Native American (pre-1935)". The seller is "deja--voodoo" and is located in Santa Cruz, California. This item can be shipped worldwide.