Details
A COLOUR-CHANGE PURPLE AND PINK SAPPHIRE, SAPPHIRE AND DIAMOND CLUSTER RING
Set with an oval-cut colour-change sapphire in a circular-cut sapphire and diamond cluster surround to the 18K gold hoop
With jeweller's mark for René Boivin
Mention of the colour-change phenomenon in gemstones usually brings alexandrite to mind. Sapphires exhibiting colour-change are rare. There are two types: those that display a violet or purple hue in incandescent light which changes to blue in daylight, and very rarely those that are reddish brown in incandescent light changing to green in daylight.
Set with an oval-cut colour-change sapphire in a circular-cut sapphire and diamond cluster surround to the 18K gold hoop
With jeweller's mark for René Boivin
Mention of the colour-change phenomenon in gemstones usually brings alexandrite to mind. Sapphires exhibiting colour-change are rare. There are two types: those that display a violet or purple hue in incandescent light which changes to blue in daylight, and very rarely those that are reddish brown in incandescent light changing to green in daylight.
