Our Surgical Steel Crystal Stud Earrings feature Swarovski Crystals in a variety of colors and sizes on posts (or dangling from a ball post) made from the 316L alloy of Stainless Steel. 316L contains steel, chromium, 8-10.5% nickel, 2-3% molybdenum, and trace elements that are approximately 0.75% silicon, 0.045% phosphorous, 0.03% sulfur, 2% manganese, and 0.1% nitrogen. Surgical Steel is dubbed "surgical" because it is used in some instruments used in surgeries because of its durability.
Our Surgical Steel stud earrings come with Surgical Steel ear nut earring backs which are Grade SAE 304 Stainless Steel. SAE 304 contains 18-20% chromium, 8-10.5% nickel, 0.08% carbon, plus iron and trace elements, which include approximately 0.75% silicon, 0.045% phosphorous, 0.03% sulfur, 2% manganese, and 0.1% nitrogen.