Weight is about 15.2 oz or 430 grams. Measures about 3 7/8" x 3 1/8" x 1 3/8".
You receive the exact one in this photo as always in my listings.
Please note that this crystal is natural and they all have variations in them and "imperfections"
*Black Tourmaline is a protective stone that repels and blocks negative energies and psychic attacks. Black Tourmaline also aids in the removal of negative energies within a person or space. Black Tourmaline will cleanse, purify, and transform dense energy into a lighter vibration*