What does Hema mean?
From Sanskrit 'hema' (हेम) meaning 'gold'. A literal gold name in Indian usage.
What does Suvarna mean?
From Sanskrit 'suvarna' (सुवर्ण): 'su' (good) + 'varna' (colour), literally 'good/fine colour', and by extension the standard word for 'gold' and the adjective 'golden'. Both 'gold' and the underlying 'good colour' senses are attested.