SPR-I Reader I Diamond & Moissanite Tester

The item does not work appropriately. The seal label on the box came open, the tester didn’t give a single accurate reading. After trying it on several natural diamonds.The experience with the seller has been the worst. He posts the item under categories that does not allow for automatic returns. He made me pay for the return label. After he received the item he issued a return for half the amount I paid. He falsely stated that he didn’t receive the item to be able to do this tricks and only return half the money. Please stay away from this seller.