Antique English mid-century Trilogy Blue Topaz ring in White Gold, with accent Diamonds. TB267.
Interior marks: "DIA" , makers CW, import mark 375 for 9kt Gold, Sheffield mark.
The stones are 4.6 mm in diameter each, with 6 accent Diamonds on the shoulders.
Total gallery is 19.1 x 5.2 mm, and stands 5 mm above the finger.
Band width is 1.8 mm.
Ring size US 6 1/4.
Total weight 2.82 gram.

Wonderful precious ring to gift, especially as promise or engagement ring!