The Common Lines Onyx Ring A clean, timeless ring set with onyx stone. Designed to feel bold but understated, with a low profile finish that wears effortlessly every day. Material - .925 Sterling Silver Promise / Guarantee All Common Lines products are guaranteed to never fade, tarnish or lose color under all circumstances that life has to throw at it! All of our pieces are guaranteed for LIFE - Common Lines offers full lifetime warranty. The warranty entitles you to a one-time repair or replacement of the piece - free of charge. 3 size options for a range of fits on all fingers for personal styling. For best care wipe clean with a damp cloth and store in the Common Lines dust bag. SIZE GUIDE: Guideline sizing: Size Small: 7 US Ring Size Size Medium: 9 US Ring Size Size Large: 11 US Ring Size