Ring made of white gold with brilliant

White gold, diamond of modern brilliant cut. Purity Au 585 / 1000. Total weight 2,65 grams. Central elevated crown with embedded brilliant of approx. 0.10 ct. , color H, purity Si1. Ring in the upper half expanded, decorated with a cut ornament with embossed decor and smooth polished surface. Lower and middle part of the ring smooth. Marked by the Czechoslovak hallmark (swan), the manufacturer's mark, the fineness of 585. Last century. Ring size 53-54.