Bidspirit auction | Pt900 Platinum 0.406ct Natural Color

Pt900 Platinum 0.406ct Natural Color Change Alexandrite and 0.30ctw Natural Diamond Ring - This Pt900 platinum ring is centered with a square princess-cut natural alexandrite. The gemstone features a distinct color-change property, transitioning from a teal blue-green in daylight to a reddish-purple color under incandescent light. The center stone is secured by a four-prong setting. The shoulders are channel-set with eight princess-cut natural diamonds, and the vertical sides of the shank are pave-set with small round brilliant-cut natural diamonds. The interior of the band is stamped with the metal hallmark Pt900 along with the numerals 0 406 and 0 30, corresponding to the 0.406ct center stone and 0.30ctw accent diamond weights. With Central Gem Laboratory Japan Sorting Memo. Ring Size: US 5.5 4.6 grams