Vintage Gold Earrings

A pair of stunning vintage yellow gold stud earrings with screw clip backs. A "750" stamp on gold earrings means the jewelry is made of 75% pure gold, which is equivalent to 18 karat gold. This mark is an internationally recognized hallmark that indicates a high-quality alloy, where the remaining 25% of the metal is a mix of other materials like copper and silver to add durability. In great pre-owned condition, from Europe, about 0.9 inch wide. Not quite sure what rock, cannot confirm if dimond. Please see the pictures with stamps and weight