Do you remember those mood rings, from the 70's....boy that can date a person. Do you wonder what makes them work. Quick chemistry lesson. Don't complain, we haven't had one for a while and there is NO TEST!!
The chemical is cholesteryl benzoate, a thermotropic liquid crystal. This molecule is a long, chunky chain, that twist when the temperature changes. As the the chain twist, the light hitting it, reflects at different wavelengths, giving off different colors.
Isn't she a beauty!!
The current mood stones change from blue to purple to pink to green to yellow.
Here is my latest design, using a mood stone. The pendent is
1 1/4" X 2 ", tatted with two strands of metallic sewing thread.