This ring is a size 5 1/2 (USA) Markings: None, typically for older Native American Jewelry to not be signed (Tested & guaranteed to be Sterling Silver) This ring weighs 12.5 Grams The Stone/Design is Blue Turquoise – (Natural, industry standard treatment if any) 20 x 18 mm The condition of this ring is Estate, very good, not cleaned, minor patina Circa 1970’s Stock# R2464 Vintage Native American Silver Ring Turquoise Sterling Blue Size 5.5 Thank you for viewing my item! Favorite the store to get updates when items go on sale!