Boron is a metalloid element (more non metal then metal) with chemical symbol B and atomic number 5. It is solid and black at normal pressure and temperature, it is easily to break with a hammer. Boron is not a very frequent element and is found in nature only in compounds together with oxygen. Crystalline Boron, which is shown here, is nearly as hard as diamond (9.5 on Mohs scale, diamond has 10). Boron has a different biological functions. Boron compounds have many, often very special applications, a common one is B2O3 for borosilicate glass. Most famous are the perborates as bleach and as washing agent. Because of their bad biodegradability the use of perborates has gone back.
Amazing Boron element standard density cube 10x10x10mm, 99.9% pure. Sample weighs around 2.3 grams which is the theoretical density of the Boron element itself. This cube is amazing for any science classrooms, schools, universities and collectors. Pure Boron cube for element collection.
Price reflects the high difficulty to make a perfect cube of Boron that is extremely fragile.