Classic vintage circa 1960s retro era 10k yellow gold created color change sapphire ring! This lovely ring features a round faceted created color change sapphire, that changes from purple in artificial light, to a violet blue in daylight. The setting is free of design, & the stone is securely prong set. A timeless piece of fine 1960s era jewelry, featuring a magical color changing stone! Sale - price reduced from $275 USD to $265 USD. ERA - Circa 1960s - Retro METAL / MATERIAL - 10k yellow gold, created color change sapphire (approx. .44 CT) (Synthetic sapphire contains essentially the same chemical composition & properties as its natural counterpart, but created in a laboratory by humans.) MARKINGS / HISTORY - Inside of band is marked “10K” with what appears to be possibly “MBF” CONDITION - Good vintage condition. Yellow gold metal has been professionally polished & cleaned. Stone is secure. Age appropriate patina & wear remains. Amazing vintage created color change sapphire ring! SIZE / MEASUREMENTS - Size: 4 3/4, Ring Head Height: 6.01 mm, Rise Of Ring Off Finger: 7.67 mm, Shank: 1.81 mm, Created Sapphire: 5.02 x 5.04 x 2.43 mm, Weight: 2.07 grams PRESENTATION - Listing includes a complimentary MJV logo gift box, as shown in last photo. All other boxes are for display only. AUTHENTICITY - Each item in our shop has been hand-selected & inspected by a GIA Graduate Gemologist. DJM Sale - Created Color Change Sapphire Ring Retro 10K Yellow Gold Violet Blue Purple .44 Ct Stone Circa 1960S Era Size 4 3/4 Fine Jewelry