5.1X4.2mm (0.50CT), 4.6X4.3mm (0.46CT), 4.8X4.3mm(0.48CT). And 4.8X4.5mm(0.50CT). 6 smaller diamonds measures approx. The diamonds are well matched, approximately J-K color and mostly SI to VS clarity.The ring is hallmarked with eagle head french mark for 18k gold and maker mark. Top of the ring measures 2cm long. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Rings". The seller is "estatesurplus" and is located in this country: CA. This item can be shipped to United States, all countries in Europe, Mexico, Japan, Brazil, Australia, Canada.