Like rivers of diamonds, the striking forms of Refrax sparkle from within, evoking floating jewels beaming with light.Lamping: 5 x 40-watt G9 base Halogen bulbs (included), 4 x 50-watt GU10 base Halogen bulbs (included) Voltage: 110Certifications: ULDesigned, Engineered, and Assembled in the United StatesDescriptions of Crystal Variations:CRYSTALS FROM SWAROVSKI are produced according to the innovative, lead free* Advanced Crystal Standard and cut with high precision. The Crystals from Swarovski Seal serves as a certificate of authenticity that identifies products made with genuine Swarovski crystals.SPECTRA CRYSTAL stands for machine cut Swarovski crystal with reliable Swarovski quality. SPECTRA CRYSTAL has been a registered trademark since 1999 and offers the most important cuts in clear crystal.HERITAGE Crystal is heirloom quality crystal characterized by visual purity, sharp faceting and precise polishing, offering shining clarity at industry standards.OPTIC crystal, formerly used only in optical and scientific instrumentation, was added as an innovative option to Schonbek products for its remarkably refractive properties, clarity, and sharpness of the cuts.ROCK crystal is naturally mined from the earth, not manufactured, and cannot be mass produced. Skilled gem cutters grind, cut and polish each rock crystal by hand, enhancing its splendor, luminosity, and natural prismatic beauty.Recalling the fashions of a bye-gone era, VINTAGE Crystals are colorful, fanciful beads, dainty droplets, and antique-style faceted ovals woven into chains creating a jewel-like brilliance.