Antique Rose Diamond Ring Circa. 1900 American Although the ring has a 20's look, it really dates back to the turn of the century, and possibly somewhat earlier. 14K yellow gold tested with 14K acid. Bezel set rose diamond, K Color, VVS1 Diamond weight is approximately .50 carat. Diamond tested with a diamond tester. This ring is truly special due to the clarity of the diamond. Rarely do you find a rose diamond to be this flawless. A great stone. Unmarked. 2.1 gr. 1.3 dwt Size 9 Can be easily sized by a jeweler. This is a very exceptional ring!