Vintage Canadian Platinum Solitaire Diamond Ring | 0.55ct SI1/SI2 H/I | SZ 6.25 | brooch Metal 14k Yellow Gold Length

Metal 14k Yellow Gold Length 15" Width 1

01ct Clarity I2 Colour I/J Cut Fair

Metal 14k Yellow Gold Size 6 3/4 Width Front: 4

42ctw Clarity I1 Colour I Cut Good

Metal 10k Yellow Gold Size 5 1/2 Width Top: 9

Vintage Canadian Platinum Solitaire Diamond Ring | 0.55ct SI1/SI2 H/I | SZ 6.25 | brooch Metal 14k Yellow Gold LengthMetal Platinum Size 6 1 4 Width Front: 5. 30mm, Back: 2. 00mm Gemstone Round Brilliant Cut Diamond Carat 0. 55ct Clarity SI1 SI2 Colour H I Cut Good Fluorescence Yes Based on the platinum alloy used in this piece and the diamond cut, it is most likely from the late 1950 or 1960s. The manufacturer of the piece is Corona, a Canadian manufacturer based out of Montreal.