A 10k yellow gold black onyx and diamond signet style ring from the 1920s-1930s. This size 4-3/4 ring features an oval black onyx stone set with a central sterling silver mounted single point diamond and the setting measures 3/4 x 1/2". This ring weighs 3.0 grams, it is stamped MARVEL 10K and it is in excellent condition with no chips, cracks, dents, bends, corrosion, damage or repairs. All items are thoroughly and conservatively graded and all condition issues are noted; all items are vintage or antique and may have slight signs of gentle use. Expedited tracked and insured parcel shipping to the U.S. starts at $22 (other spots may vary, air is higher). Items paid with a credit card will be shipped to confirmed addresses only. We do ship internationally. All of our prices are in $US. PLEASE NOTE: We DO NOT accept PayPal.