the density of osmium which is the densest metal
Osmium has a blue-gray tint and is the densest stable element, approximately twice the density of lead and slightly denser than iridium. Calculations of density from the X-ray diffraction data may produce the most reliable data for these elements, giving a value of 7004225620000000000 ♠ 22.562 ± 0.009 g / cm for iridium versus 7004225870000000000 ♠ 22.587 ± 0.009 g / cm for osmium.