Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Platinum Art Deco ring €3,740.00 Platinum ring made in France in 1925. Approximate 1.50 ct diamonds, old European cut. The ring is 6.7 grams and is size 55. Contact us! Added! Platinum ring made in France in 1925. Approximate 1.50 ct diamonds, old European cut. The ring is 6.7 grams and is size 55.