Anyone know the title of this book?

-I read it years ago, so I can't remember much...I got it as a used book. It was something like 'Stranger from the Deep' or something.. It was about a couple of guys who found this thing in a cave or ocean or something, and did research on it. I can barely remember. Anyone know the title and the author?Is it 'Stranger from the depth' by 'Gerry Turner'?



It's the story of two brothers, Gary and Jordan, who discover a statue buried deep within a cliff-- a statue of a lizard-like man, made out of diamond.