Here is an outstanding designer ring in 18K yellow gold and platinum, channel set with 3 princess cut diamonds and 4 small round diamonds.
The design is copyrighted as stamped inside with the hallmark C&T. 18K and PLAT are also stamped inside.
This ring is very well made and quite heavy weighing 19.5 grams.
The 18K gold part and the platinum part were cast separately and then soldered together.
This ring is 26.7 mm high, 6.2 mm above the finger by 22.2 mm wide, 9.4 mm across top, 5.6 mm at bottom of the shank.
The top platinum part is set with 3 princess cut diamonds weighing 0.48 to 0.52 carats each. Total weigh estimated at 1.50 carats.
They are VVS in clarity and H,I in color. On each side of the ring there are 2 platinum hexagonal nuts, each set with a 0.02 carat round diamond.

Item id: gr-551
Type: Designer
Color: Gold, Silver, Yellow
Stone cut: Princess Cut
Stone: Diamond, White Diamond
Item size: 8.75
Item type: Vintage
Material: Gold, 18K Gold, Yellow Gold, Platinum