I just learned about this in chem11. I'll give the definition off my sheet.
Specific gravity is a dimensionless unit defined as the ratio of density of a material to the density of water at a given temperature (usually at 4oC).
Note that this expression is obsolete today; use the density.
Aluminum has no specific gravity, at least by the current definition of gravity.
mica has the specific gravity of 2.88
Specific gravity of ppc is 3.15
The specific gravity of acetone is approximately 0.79 at 20°C.
Specific Gravity.
The specific gravity of quartz is nearly 2.65.
according to Geology.com the specific gravity of Chalcopyrite's is 4.1 -4.3.
Another word for specific gravity is density.
Diamond has the specific gravity of 3.5, which is above average.
To find the specific gravity of cement
the specific gravity of the sphalerite mineral is aproximatelyy 4.0
for the purpose of measuring the specific gravity