Traditional Hand Blown Craftsmanship: The modern technology of making a glassware by machine is fast and efficient. However, the traditional way of making a glassware by mouth and hand is more of an art. Each Joeyan crackle martini glass was carefully handmade by skilled blowers. No two pieces are exactly the same, making each piece a little different in size and shape, but also making each piece the only one in the world. Special Blue Ice Crackle Design: When the crackles meet glasses, it is a visual art enjoyment. And, the blue color at the bottom is a bonus to the aesthetics.