Ring Art deco Colombian Emerald 1.70 Cts and diamonds

Ring Art Deco engagement set, in yellow gold 18Kt and paltinium (hallmarks: owl and mascaron), adorned at its center with a rectangular emerald weighing approx. 1.70 Cts, in a setting of diamonds rose-cut emeralds, whose total weight is estimated at approx. 0.25 Ct. Emerald certified as natural and of Colombian origin (Carat Gem Lab Paris certificate) with minor impregnation noted. Art Deco work, Circa 1920. Gross weight: 4.05gDesign height: 1.10 cmDesign width: 1.80 cmSize: 53 (diameter 16.75 / US 6.25). Condition: very slight micro-scratches on the gold and paltinium parts, abrasion, and natural inclusions on/in the stones, see photos. Did you know that emerald ("The club of 4") takes its name from the Greek "smaragdos" meaning "green stone"? A precious stone of striking beauty, emerald is one of the most sought-after gemstones for its rarity and beautiful green color. The most prestigious have historically come from Colombia, and have adorned our jewelry since the 16th century, even though the Indians knew about these deposits long before the arrival of the conquistadors. All our engagement rings.