Yes it’s true, the gemstone group of minerals referred to as garnets are not just red or reddish orange. Garnet is a generic name for the many minerals in the group, each of which is named after its color. The name garnet derives from the Latin for grain because of the rounded garnet crystals being similar to the red kernals of the pomegranate.
The colours and their names are;
Tsavourite – green
Spessaitite – orange
Malaia – pink and champagne
Rhodolite – pink, reddish and purple
Almandine & Pyrope – red to browish red
Hessionite – yellow and amber