$3,375
FANCY COLOR DIAMOND PLATINUM COCKTAIL RING; Irradiated blue, green and yellow marquise cut diamonds, colored orange pear-shaped diamonds, with untreated marquise cut diamonds, split shank is tapered ribbons of colorless baguette cut diamonds. Lively and well made, diamonds approx. 7.75 cts. TW, ca. 1960. Size 6. 9.5 dwt. Note: Irradiation in nature produces color in diamonds. 1904 saw the first color enhancement by irradiation in a lab, stable, non-radioactive irradiated and heat-treated diamonds in a broad spectrum of intense colors were a novelty retailed by 1950.
Auctioneer:
Rago Auctions
Date:
2013-12-08