Reply To: Question About Meetpoint Precision on Harder Gem Materials

[brianf]

Hardness definitely matters. Sapphire and spinel are far less forgiving than quartz, so light pressure, slower cutting, and a well-conditioned lap are critical for clean meetpoints. Final polish choice also plays a big role in hard stones—this overview on diamond polishing compounds explains why: https://ukam.com/product/diamond-polishing-compounds/