Hello all — I recently came across a beautiful stone marketed as Malaya garnet from Mahenge region. It display the typical color shift (orangy red to pink to light cinnamon) in variety of lighting environments. It contains fine rutile that’s slightly visible under strong direct light or under the loupe. When I put it under the 311nm UVB light, it turned green, which is very unusual. Anyone can offer any insights? I am attaching two videos for your reference.
Turn green: https://www.youtube.com/watch?v=az19VSuhWLU
Regular light: https://www.youtube.com/watch?v=aL1GJtZlh0o
Also, the stone is 7.5ct for $5,500. Is that a fair price for this material?