A breathtaking vintage cocktail ring featuring a natural unheated star sapphire accented with diamonds in platinum. The sapphire measures 10.76-10.78 x 8.60mm and is approximately 10 carat by formula. We love the color of this sapphire, GIA graded it as violetish blue, when I look at this stone I see a sky right before a storm, I could gaze into this beautiful stone forever. GIA report indicates that this sapphire does not show indications of heating treatments which is quite rare to find sapphires without treatment and makes unheated stones quite valuable. Diamonds are round and marquise cut with the larger stones each approximately a third of a carat for a total diamond weight of 3.65carat. The total gemstone weight of this ring is calculated at 13.6 carat. This ring includes a GIA sapphire report number 5212457007

Metals: hallmarked iridium platinum

Gemstones: star sapphire GIA grading - a natural star sapphire, measurements - 10.76-10.78x8.60mm, shape: round, cutting style - double cabochon, transparency - semi transparent, color - violetish blue, phenomenon - displaying asterism (star), treatment - no indications of heating. By formula this stone is approximately 10carat, this stone is not a standard cut so 10ct is an estimate based on formula for standard cabochon; diamonds - total diamond weight by formula 3.65ct, round cut diamonds range 3-3.5mm estimated clarity VS2-SI2/ color G-I, marquise cut diamonds measure approximately 7x3.5mm, 7x3.5mm and 7.3mm with weight calculated by formula to be 0.35ct, 0.35ct and 0.30ct estimated clarity SI1-I/ color H-J

Gemstones measured and graded while set subject to mounting limitations, weights calculated by formula
Ring Dimensions: 25mm x 24mm, 18.2mm tall (from the finger), 2mm wide base of the shank

Ring Size:7.5

Total Weigh: 10.5g

Marking: hallmarked Irid Platinum

Condition: item in fine estate condition

Items included: a lovely new ring box and a GIA Sapphire Grading Report

SKU: JA4007