Colorful, semi-precious stones like amethyst, agate and malachite are currently stealing the show in floors, countertops and backsplashes, and people are loving it. But there’s more to these stunning, sparkling slabs than meets the eye. Made from real gems, it’s believed that they also possess the metaphysical healing or mood-altering properties associated with semi-precious stones. Oh, and they’re super-durable.