Use a white light torch and Home › Forums › Specific Discussion › Identification › How to identify cat’s eye gemstone? › Use a white light torch and December 25, 2014 at 10:08 am #6082 navneetgemsParticipant Use a white light torch and when you face light on top of the stone then you will see a vertical line and when you move stone slowly from right to left or left to right then that line moves also.
