Simple black spinel necklace with a stainless steel clasp. Upon close inspection, there are also red stones interspersed throughout, but the material of these red stones is unknown. Please be aware of this. - Colors: Black spinel, Red stones (details unknown) - Clasp: Stainless steel - Weight: 23g - Design: Bead necklace - Length: Approximately 60cm Meaning of the Engravings • S.Steel = Stainless Steel • 316L = Indicates the grade (type) of stainless steel. Characteristics of 316L Stainless Steel • Also known as "surgical stainless steel," it is often used in medical instruments and high-end accessories. • It is rust-resistant and highly corrosion-resistant (especially resistant to sweat and seawater). • Although it contains nickel, it is less likely to cause allergies and is popular as a material for those with metal allergies. • "L" stands for Low Carbon, indicating that it is more rust-resistant and durable. This engraving means: "This clasp is made of 316L grade stainless steel, which is durable, rust-resistant, and considerate of allergies." Thank you for viewing. As this is a long-term stored item, it is listed as "slightly scratched or dirty." We have photographed the item to show the colors as closely as possible to the actual product, but the colors may appear different depending on your viewing environment. Please be aware of this. Thank you for viewing.