It's a density measurement relative to (standard) water. Water is given a 1.00. Things that would sink have greater than 1.00 specific gravity (not accouting for shape).
specific gravity on urine test strip, what does this mean result 1.015
the specific gravity of a topaz is 3.4 to 3.6
Perhaps you mean "specific gravity". That refers to an object's density, compared to the density of a reference subtance (usually water). For example, if iron has 8 times the density of water, then its specific gravity is said to be 8.
Sp. Gravity as 1.030 Urine Analysis means
The specific gravity of gold is 19.3, it means the density of gold to density of water results 19.3...which gives the idea about how heavy the gold is , in respect to water.
Specific gravity of corundum is between 3.95-4.01.
Specific gravity of sulfuric acid = 1.8 specific gravity is the ratio of the density of a substance to the density of water (waters density in the denominator). So this means the density is 1.8 g/mL
The specific gravity of diamond is 3.5, which is 'above average'.
A specific gravity of 4.0 for a mineral means that a given volume of the mineral has 4.0 times the mass of the same volume of water.
There is no such thing as a specific gravity for any element.
Aluminum has no specific gravity, at least by the current definition of gravity.