really rare ring as the sapphire not only transparent and VERY lively, rare cut, but shows extreme color change with any light (day or night!) and it changes in 3different colors at the same time! please see photos - it shows triple color zoning - kind of like bluish-violet blue/light blue/medium-dark blue!! it is very transparent! it has a LINE inclusion visible with 10x, but very transparent to the eye. it is lab grown - been confirmed by GIA gemologist, but it can be easy confused with the natural because it is so good quality and very lively color not dull as with low quality lab stones . it shows very strong color changing zones as you rotate it in the light ! 2nd photo in the evening light and 3rd photo in the day light. also the setting made in a way (under the stone) to help to direct the light in certain way to make this color change zones even stronger! in great antique condition with only minimal wear! you will love it:-)! please see photos for sizes, weight, hallmarks - please see photos. it is approx 3g and size approx 6.5 the sapphire approx 16.5x7.2mm of approx 3+Ct and the face of the ring is approx 18.5x9mm it is rare to see lab grown sapphire of this color - very collectable ring! you will not stop watching it while wearing:-) it is amazing to watch the color zoning while rotating it! fast shipping! fast 100% international delivery -3-5 days with tracking and signature! smoke free environment! comes in a ring case - can be gifted/worn immediately! thank you!