Details
COPPER CUBES 1 1/4 INCHES SQUARE. GRADE 1085 WHICH IS 97% PURE COPPER (CU). PERIODIC TABLE #29 AND ATOMIC MASS 63.55 AND THE COPPER DENSITY IS 8.92g/cc. THE WEIGHT IS 10 OUNCES SOMETHING DIFFERENT FOR YOUR COLLECTION OR AS AN EYE-CATCHING PAPER WEIGHT AT YOUR OFFICE.