NOTE: Rhodolite Garnet Oval Cut Gemstones The carat weights of the Rhodolite Garnet Oval Cut calibrated gemstones listed here are only approximate weights. The actual carat weight of the Oval cut Rhodolite Garnet you receive can be more or less than the listed carat weight. Standard calibrated Oval shaped Rhodolite Garnet Gemstones are based on dimensions, not carat weight.