Sadhguru Gems And Jewellers
Light, Colour and Refractive Index
Why one stone looks brighter than another.
Plain words first, then the desk number called refractive index.
US$25 · ₹2,377
Buy this bookLight slows down in a gem
When light enters a stone it slows and bends. That bending is why a well-cut stone can look lively. A dull cut, a window, or a scratch can waste the same light.
Brightness is not proof of the name. Two different minerals can both be bright.
The rest of the book
3 more chapters, and the PDF with only this shop’s name on it. US$25.
Buy and unlockOriginal notes from Sadhguru Gems And Jewellers. Not a reprint. Not a medical treatment. Not a gem report.