Marguerite Sapphire and Diamond Ring in Yellow Gold

18Kt yellow gold daisy engagement ring (hallmark: owl), decorated in its center with an oval sapphire (probable origin: Siam) whose weight is estimated at approximately 2.90 Cts, in a surround of brilliant-cut diamonds, whose total weight is estimated at approximately 0.80 Ct (estimated color H, estimated clarity VS to SI). Vintage work. Gross weight: 6.56g Pattern height: 1.60 cm Pattern width: 1.20 cm Ring size: 54 1/2 (17.25 / US 7.00) Condition: very light micro scratches on the gold parts, slight abrasion of the stones, and natural inclusions in the stones, see photos. Did you know that blue sapphire owes its color to the presence of iron and titanium in its composition? The shade of blue varies according to the origin of the gems: Sapphires from Thailand and Australia, which come from basalt rocks, are generally darker because they are rich in iron. All our engagement rings.