3d laser crystal engraving
https://ricardoxihj198.edublogs.org/2020/04/21/5-laws-thatll-help-the-crystal-chandelier-pendant-industry/
Other preferred types of crystal which might be used for gifts are crystal chandeliers, crystal chandelier candle holders, crystal Xmas tree lights, crystal votive candles, crystal votive holders, crystal jewellery,