Tubogas knot ring designed by Cartier. A really beautiful ring created in Paris France back in the 1980, by the jewelry house of Cartier. This ring is part of the iconic tubogas Hercules knot collection crafted in stainless steel and yellow gold of 18 karats with high polished finish. Citrine: Mount in a bezel setting, with 1 oval faceted cut of a natural golden citrine of 1 carats. Weight: 7.35 Grams, (4.71 Dwt). Size: 5.5, cannot be enlarged. Measurements: mm by mm (Inches). Hallmarks: Stamped with the maker's mark, the mark for the assay of the gold, the serial numbers and signed, "CARTIER .750 703508 OR ET ACIER". Collateral: It is accompanied by a presentation jewelry box. Condition: The overall condition of this ring is excellent. Beside the little normal wear, there is no damage to the gold. The gemstone is secured in the settings. This piece has been carefully inspected to guarantee the condition and authenticity. INVENTORY REF: R030823XINR/.1766