Purple Amethyst Gemstone with Diamond Clusters Sterling Silver Ring Size 6 1/2 - Excellent Condition, See Photos (note diamond clusters tested real) Total Ring Weight 3.3 grams ... Includes Free Shipping. Note sterling silver such as jewelry, coins etc. have delivered on-average 4.8% annual returns on investment since 1979.  Silver is a valuable asset that remains stable long-term regardless of economic market swings up and down.  Silver values just keep growing steady.