"Antique French Art Deco Platinum Diamond And 4 Carat Sapphire Ring"
Very pretty ring, French manufacture around 1930. Made of platinum (dog's head hallmark), set with diamonds and a certified untreated Ceylon Sapphire of approximately 4 carats. The weight of the diamonds is approximately 1 carat. Dimensions: 18*16mm for the front part. Finger size: 54 or 6.75 USA. Weight: 5.20 grams 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato