HOYACRYSTAL HOYA Crystal Shot Glass, Fumio Sasa There are some light scratches due to age, but it has been primarily for display and I believe it maintains its aesthetic appeal. Thank you. HOYA CRYSTAL, which unfortunately withdrew from the crystal business in 2009. It is a high-quality crystal with high transparency, high refractive index (the brilliance of the glass surface), and high dispersion (the rainbow-like shimmering of light), among crystals. HOYA CRYSTAL products are handmade by craftsmen, one by one. A shot glass overflowing with a sense of weight, using plenty of crystal. A special glass. Fumio Sasa signature included.