Heliodor is a fusion gem.
At first sight, Heliodor can be often mistaken for a normal Gem since it is a bit taller than Pearl and shorter than Garnet and also has only 1 set of arms and legs. Heliodor is a yellow-green color. It has it's gems on it's chest, although the gems are close together and seem to be 1. Heliodor has short hair and wears something resembling a shirt and a pair of shorts.