Star or Cat's-Eye Rhodolite
Star or cat’s-eye rhodolite garnet exhibits optical phenomenon when light within the gem reflects off the rutile inclusions, creating narrow bands of light. When two or more intersecting bands appear, a star pattern is formed. Depending on the crystal, the star may have four or six rays. Stones have been reported with diasterism where both a 4-ray and a 6-ray star can be seen depending on the light orientation. The phenomenon comes from needle-like inclusions oriented at 70 and 110 degrees angles. When only one band forms, it is classified as a "cat's eye". Rhodolite star garnet comes from Kangala Mine, in the Tiriri mining district, Tanzania. The largest stone found from the Kangala Mine is 15.60ct.
Star or Cat's-Eye Rhodolite Classification
||Star or Cat's-Eye Rhodolite |
Star or Cat's-Eye Rhodolite Optical Properties
||May appear reddish |
Star or Cat's-Eye Rhodolite Characteristic Physical properties
||Pyrope-almandine garnet is a type II clarity stone. Needle like inclusions produce 4 to 6 rayed stars and will sometimes show both in well-cut stones. Stones might have zircon crystals with stain halos and irregular rounded included crystals that might be zircon or apatite. |