Antique Diamond Solitaire 0.35Ct Gold and Platinum

Solitaire ring in 18kt yellow gold and platinum (hallmark: owl), set in its center with an old-cut diamond, weighing approximately 0.35Ct, estimated color I, estimated clarity SI, in a platinum setting. Belle Epoque, circa 1900. Gross weight: 1.85 g Ring size: 53 1/2 (diameter 17.00 / US 6.50). Height: 0.60 cm Condition: very light micro scratches on the gold and platinum parts, and very light shock on the girdle of the diamond, see photos. Although its existence has been known since the engagement between Mary of Burgundy and Maximilian of Austria in the 15th century, the De Beers house also contributed to popularizing the diamond as an ornament for the engagement ring, notably by recommending the price of the latter; equivalent to two months' salary. All our engagement rings.