3 ms·
The patent on silicon carbide gemstones just expired a few months ago: https://en.wikipedia.org/wiki/Moissanite#Applications https://en.wikipedia.org/wiki/Mois
by p1mrx 11y ago
The patent on silicon carbide gemstones just expired a few months ago:
https://en.wikipedia.org/wiki/Moissanite#Applications https://en.wikipedia.org/wiki/Moissanite#Applications