1" Vintage 10k Yellow Gold Black Star Sapphire Ruby Screw-back Earrings

1" Vintage 10k Yellow Gold Black Star Sapphire Ruby Screw-back Earrings Truly stunning. Completely hand fabricated vintage solid 10k yellow gold (41.7% pure gold) earrings with black star sapphires and rubies. I Believe these to be from the 1920's-50s' but hand fabricated jewelry is difficult to properly age.  Total Weight: 3.7 grams Hallmarks / Stamps: None Testing: Acid / Gem Keywords: Birthday, Anniversary, Formal, Wedding, Gift, Prom, Business, Casual, Rare, Dance, Natural, Estate, Vintage, Antique