Natural Black Agate Ring - Nepal - Handmade - 925 Sterling Silver

Size Information - Stone Size: Approximately 11x13mm Ring Size: Adjustable Material Information - Natural Black Agate, the entire ring is made of 925 Sterling Silver. The black finish is achieved through a special vulcanization process. Q: What is the "vulcanization process" commonly seen in Nepalese jewelry? A: When silver jewelry turns black, "oxidation" is a common folk term. Oxidation refers to the reaction of a substance with oxygen. However, silver (jewelry) turns black due to a reaction with "sulfur" in the air, forming "silver sulfide." The black substance on the surface of silver (jewelry) (which can be coffee-colored, light brown, dark brown, or reddish-brown) is "silver sulfide." If silver (jewelry) is not properly maintained, it will lose its luster and turn black. Therefore, the correct term should be "sulfurization," which is a reaction with hydrogen sulfide or sulfur dioxide in moisture present in the air, forming silver sulfide on the surface of the silver (jewelry). In the craftsmanship of Nepalese silver jewelry, specific "sulfurization" treatments are applied (giving it a black or antique appearance) to enhance the unique character of the artisan piece. If you dislike this effect, you can try gently scrubbing the piece multiple times with a soft brush dipped in toothpaste to remove the intentionally applied sulfurized areas. Product Includes - Ring, Jewelry Box, Silver Polishing Cloth, PVC Jewelry Pouch Nellie After-Sales Service: All products come with a lifetime warranty and repair service. (Repairs may incur fees depending on the condition of the item) ■ Shipping Information All Nellie products are shipped from Nepal. To help you save on international shipping costs, if your delivery address is within an Asian country, we consolidate orders weekly and ship them to our Taiwan studio. From there, our team in Taiwan will dispatch the items to you.