WEMPE ring with ruby and diamonds

WEMPE ring with fine oval faceted ruby, ca. 1.42 ct, beautiful Siam-colour, facet edges abraded, slight scratches, surrounded by 28 trapeze cut diamonds totalling ca. 1.41 ct, ca. RW (F-G)/VVS, 18K yellow gold, 15.7 g, ring size 58, 1990s, signs of wear, marked WEMPE 8156, certificate, proof of purchase converted ca. 17,000 €.