"Art Deco Period 1930 Tank And Diamond Platinum Ring "
Very beautiful art deco ring in platinum weighing 6gr decorated with four diamonds the central one is a rose cut 0.57cmx0.57 cm the first 2 sides are old cuts (conical) 2.9mmx2.9 mm same for the other two but 2.4 mm on each side size 65 ring diameter 2cm 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato