The density is 3.97 to 4.05 g/cm3 giving it a sg of 3.97 to 4.05
No US state has the ruby as their official state gem.
Diamonds are most useful in industrial applications, usually based on the mineral's supreme hardness. Transparency is one of the characteristics of gem-quality diamonds, which represent only 20% of all diamonds mined. From Wikipedia: "Specific gravity is the ratio of the density of a substance compared to the density (mass of the same unit volume) of a reference substance." You can read more about the specific gravity of gemstones, below. It explains how specific gravity is used to identify gemstones.
The plural of ruby (a gem) is rubies.
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The streak of a ruby is white.To find the streak of a ruby, or any gem stone, rub a piece of gem material on a tile and look at the color of the streak it leaves.
The streak of a ruby is white.To find the streak of a ruby, or any gem stone, rub a piece of gem material on a tile and look at the color of the streak it leaves.
A ruby is a type of valuble gem stone. A taco is a food.
The Ruby is more expensive.
There is no saint named Ruby. Rubies are gem stones.