A DIAMOND RING First third of 20th century/ Central Europe/ Platinum, diamond A ring with an Old European cut diamond. The diamond is set in a decorative frame setting. Pt 950/1000, white gold. The ring is not marked with any hallmark recognized in the Czech Republic. Pt 950/1000. Weight: 5,05 g. The weight of the Old European cut diamond, which was determined by calculating the dimensions, is ca. 5.22 carats, purity level VS1, color L, cut: excellent – Old European. Expert assessment and certificate attached. 5.05 g