• In order for gemstones to sparkle, light needs to be able to reflect and refract through the gemstone. Dirt,lotion, food and other debris can stick to your stones, making them look dull. It is very important to remember toclean not only the top of the gemstones but also underneath the stones and setting. Use a soft toothbrush orone of our small detail brushes to remove stubborn dirt, and your gemstones should sparkle from across theroom.