Jack suggested to try colour lighting so this is my experiment with a red filter on a quartz crystal.
Canon EOS M100 • EF-M28mm f/3.5 MACRO IS STM • ƒ/3.5 28.0 mm 1/50 1600 Flash (off, did not fire)
Canon EOS M100 • EF-M28mm f/3.5 MACRO IS STM • ƒ/3.5 28.0 mm 1/50 1600 Flash (off, did not fire)