18 Karat Gold, Silver, Colored Diamond and Diamond 'Sliding Necklace', René Boivin, France The 'day-to-night' style with three frontal panels set with round diamonds of yellow and brown hues weighing approximately 4.45 carats, the central panel set with round near colorless diamonds weighing approximately 5.50 carats, with polished gold rondelles which slide to conceal the diamonds and expose silver segments for variety of wear, gross weight approximately 99 dwts, internal circumference 13½ inches, signed René Boivin, stamped G & Co. with British import marks and French maker's marks; circa 1975.
18 Karat Gold, Silver, Colored Diamond and Diamond 'Sliding Necklace', René Boivin, France The 'day-to-night' style with three frontal panels set with round diamonds of yellow and brown hues weighing approximately 4.45 carats, the central panel set with round near colorless diamonds weighing approximately 5.50 carats, with polished gold rondelles which slide to conceal the diamonds and expose silver segments for variety of wear, gross weight approximately 99 dwts, internal circumference 13½ inches, signed René Boivin, stamped G & Co. with British import marks and French maker's marks; circa 1975.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
