Anyone know this 80s artist?

Is anyone familiar with a mid-80s song that that starts "he held in his hand a diamond, held it tight..." I thought it might be called Fountain of Youth but I cant find it anywhere-- any help would be appreciated!

could it be savatage? they were in 1979... Savatage - Wikipedia, the free encyclopedia

or...

Arrested Development in 1990's
Arrested Development & - Wikipedia, the free encyclopedia

or..

Guided by Voices
Guided by Voices - Wikipedia, the free encyclopedia

sorry thats all i could find, i looked everywere for these, i hope it helps...

Reminds me of Steely Dan's "Reelin' in the Years" (1972)
Well, you wouldn't even know a diamond if you held it in your hand