Quartz crystals are translucent, glasslike stones found throughout the world. Common quartz crystals are clear quartz, rose quartz, smoky quartz and amethyst. These stones can be drilled to create small holes for jewellery fittings to be inserted. Quartz crystal is a hard substance that must be drilled into with a diamond carbide drill bit. These special drill bits are coated in diamond dust to allow it to cut through hard surfaces such as ceramic, glass and stone.
Check the crystal for cracks and fractures; a crystal with these flaws will be more likely to break or shatter. Locate a flat area on the crystal that is void of flaws for the location of the hole(s). Mark a small dot on this area with a marker.
Fill a flat-bottomed container with water. Set the container on a level worktable. Place the crystal in the water so it is completely covered. Adjust the crystal so it is level on the bottom of the container.
Put on eye protection and a dust mask. Hold the crystal by the sides in the container away from the drill mark. Set the diamond carbide drill bit onto the marked area on the crystal. Gently drill down into the crystal for 3 to 4 seconds. Gently pull up on the drill to release the bit from the crystal.
Place the drill bit into the hole, drill for 3 to 4 more seconds, then pull the drill bit back up through the crystal. Repeat until the crystal is drilled all the way through.
Remove the crystal from the water, and clean it with cold water.
Make sure your hand is out of the way of the drill bit at all times. Some crystals will shatter when drilled into. Wear eye protection.