Spectacular, super sparkly, faceted rock crystal in a raised sterling silver setting makes for an impressive cocktail ring. Marks, as shown in the photo, include: C S, a crown in a heart for domestic production, 925H for sterling dating 1973 or earlier, the symbol for Helsinki, T7 which dates it to 1972, and the mark for Kaunis Koru which was established in 1954. The ring is a size 7 3/4. The rock crystal measures 3/4 inch in diameter. Excellent condition.