This BORON Crystalline Powder comes in the form of micro crystals and has 98.5% industrial grade purity. Though there are two allotropes of boron don’t confuse this product with the amorphous boron which is a brown powder. Our product is in metallic form which is black, hard, and a bad conductor in room temperatures. It is never found free in nature. If you are in need of a material with high tensile strength, then this product is perfect for you because it’s known as the element with the highest tensile strength. Quantity is 15 grams.