Kagami Crystal was founded in 1934 by Kozo Kagami as Japan's first manufacturer specialising in crystal glass.  Its exquisite crystal glasses, created by experienced artisans, have been widely loved and recognised by countless awards in Japan and internationally for their superb quality. Nonetheless, in 1943, Kagami won its most prominent designation and became an official supplier to the Imperial Household Agency, which serves Japan's Imperial Family. Kagami's beautiful crystal glassware is also officially used in over 250 Japanese embassies and consulates to host formal and state banquets.  And now, delivering the unchanging beauty of Japan, along with the change of time, just like its conviction "to become the ultimate crystal brand loved by all generations across all eras", Kagami Crystal continues to engrave new history at all times as the best crystal maker that is loved beyond time and generation, keeping the high skills and qualities that it developed over many decades.  What is Crystal Glass? All Kagami Crystal materials are a type of glass called "Crystal Glass", mainly used in art and decorations such as jewellery and chandeliers. The crystal glass contains lead oxide as the main component, along with potassium oxide, barium oxide, titanium oxide, etc. Therefore, it has a crystal-like high transparency and a refractive index (nD) of 1.520 or higher, giving a clear tone and beautiful lustre glossy shine.  The higher the specific density of lead, the heavier the crystal glass is. It gives a great experience when holding a whiskey glass in your hand. ■ Handmade In Japan■ NOT Suitable for Microwave or Dishwasher■ Material: Crystal Glass■ Size: 81 mm (Diameter) x 93 mm (Height) ■ Capacity: 250 ml ■ Comes with a custom-made wooden box by Kagami Crystal. Perfect for gifting.