Hey there! My name is Robin, and I'm thrilled to welcome you to my store, WhichKraft! Thank you so much for taking the time to check out my Dragons and Unicorns Natural Slate Coasters - they're a personal favorite of mine! These coasters are made of natural black slate and are carefully engraved to add that extra touch of charm to your home decor. They make a perfect gift for any special occasion, whether a birthday, housewarming party, holiday, or wedding. Each coaster measures 4" by 4", and I've added four foot pads to the bottom of each coaster to ensure your furniture stays protected. Cleaning these beauties is easy - wipe them down with a damp cloth. However, please remember that the coasters are unsuitable for the dishwasher and must not be submerged in water. As each coaster is engraved on the day you place your order, it may take 3-5 working days to ensure they're of the highest quality. Natural slate is a type of stone with variations, but I'll carefully check each coaster's quality before shippin