I mean is there even an iota of scientific grounding or is it just plain balderdash? Is there a hinduism twist towards wearing gemstones?
Don't worry my friend.. Your friend will not only love you more but will admire you too. Just let me know what gemstone he/she is fond of. And if she / he doesn't mind, give me her DOB and time. It's a science for those who are ready to think it over:)
Ho, ho, ho..