Although the cut glass of Swarovski crystal is less expensive than real gemstones, it is still considered top-of-the-line and quite delicate in the realm of costume jewelry. Swarovski crystal jewelry is an investment, so taking proper care of all pieces is a must. While it is important to know how to clean Swarovski crystal jewelry no matter how dirty it is, proper care and maintenance once the jewelry is clean preserves its life and protects one's investment.