BISMUTH One (1) Large Rainbow Crystal Education Teaching Aid - Bonus Ingot!

Material: Bismuth Origin: USA Size: Approximately 1.5" to 2" longest dimension, point to point. You are buying one (1) Large superior quality iridescent bismuth crystal that is similar to the ones pictured. Your piece will display brilliant rainbow colors as well as state-of-the-art intricacy, iridescence and luster. Each 99.99% pure bismuth crystal is lab grown in the USA by Mineral Planet. Also included is a nice-size chunk of 99.99% (4N) pure bismuth ingot that is the raw material used to create these amazing crystals. This combination is perfect for educational, teaching purposes! About bismuth:Bismuth is a metallic chemical element with some fascinating properties. Bismuth's atomic number is 83. Many assume it is, therefore, heavier than lead (atomic number 82). However, its density is only 86% that of lead due to its less compact atomic structure. Nevertheless, it does feel curiously heavy in the hand. It is also the most diamagnetic natural substance which means it is actually slightly REPELLED by a magnet. Bismuth is one of only a few substances, water being another, that actually expands upon freezing (solidifying). Shipping is by USPS First Class Mail TO USA ONLY.I will ship within 1 business day of receipt of payment. In the unlikely event that you are not satisfied with your purchase you may return it within 30 days of receipt, no questions asked. Buyer pays return shipping. Thanks for looking!