Tourmaline (Rubellite), pure transparent crimson color. The shape of the cut is diamond, ceylonese. Sri Lanka deposit
Frame: Author's, handmade, made of 925 * silver with blackening, in the lower part of the ring shank there is a nameplate and a sample of the State Assay Chamber.
The size of the stone (small) is 13x10x2 mm, the weight is 1.21 g.