Vintage Canadian Platinum Solitaire Diamond Ring | 0.55ct SI1/SI2 H/I | SZ 6.25 | new356 Yellow Gold Size 4 1/2

Yellow Gold Size 4 1/2 Width 2

6 Width Top: 9

Metal 14K Yellow Gold Size 7 1/2 Gemstone Round Brilliant Cut Diamond Carat 0

25ctw Diamonds Clarity SI2-I1 Colour I/J Cut Good

Metal 18k Yellow Gold Size 9 3/4 Width Top- 15

Vintage Canadian Platinum Solitaire Diamond Ring | 0.55ct SI1/SI2 H/I | SZ 6.25 | new356 Yellow Gold Size 4 1/2Metal 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.