The stone representing Judah was called a nofech in Hebrew. This is generally translated as turquoise. The color was a sky blue (Heb. - Techelet).
They probably represented a rain god.
They likely represented the Rain God.
Keith stone
The company represented by the acronym RST on the NYSE is Rosetta Stone, Inc. Rosetta Stone produces software which teaches people foreign languages in a systematic way.
blak
any color because stone mountain is a batholith
November's Birth Stone is Citrine, which is sort of an orangy-yellow color.
sewage-colours
brown
Rotten stone, a fine abrasive powder used for polishing, typically appears as a light grey or off-white color.
This would be a peach. The fruit is the same color as the skin, and the seed in the center is called a stone.
a four color dye-injected quartz stone..., quite lovely.