"Ruby Ring, Diamonds, Gold, XXth Century"
Ring in 18K White Gold, set with a large Natural Ruby of 6.20 carats, paving with Diamonds (more than 3 carats) set on platinum catkins. LFG certificate provided (French Gemology Laboratory) ... see photo. Ring from the 1960s and 70s. Weight White Gold: 15 grams Finger size: 52. Dimensions of the Ruby: 12.9 mm x 9 mm thickness: 5.13 mm Ring visible only by appointment. 
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Rivista Artiquariato
TRÉSORS magazine