SCIENCE Mineral Specimen Bi Blue Lead Bismuth Made In L "Bismuth (artificial Crystal) Germany" Size (45mm-/approx. 61-75g)

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ---------------------------------------------------------------------- Please note that due to the structure, the bismuth crystal block may be split into two or more. The indicated size is a guideline for the total block size. The iridescent color on the surface is due to the oxide film formed by reacting with oxygen during recrystallization. Bismuth (artificial crystal) blue lead Bismuth Chemical formula: Bi Made in Germany Paper specimen box size: approx. 72 x 57 x H19mm *Contents and production area may change due to availability of materials. Please note that due to the structure, the bismuth crystal block may be split into two or more. The indicated size is a guideline for the total block size. Specimen case: A standard collection item, comes in a paper specimen box (*The specimen box does not have a lid) Approximately 72 x 57 x H19mm. The Japanese name for bismuth is soen. By melting the bismuth with heat and recrystallizing it, this crystal becomes a shape called a skeleton crystal, which looks like a cut-out square pyramid. The iridescent color on the surface is due to the oxide film formed by reacting with oxygen during recrystallization. *Contents and production area may change due to availability of materials. Note) We do not accept returns or exchanges due to customer convenience.