As of 2004 there was no one test or group of tests that can reliably diagnose DIC because it is a clinical event that occurs without warning, arising from another event such as surgery, childbirth, snakebite, and certain disease conditions.
Each year about 8,000 Americans receive a venomous snakebite, but no more than about 15 die, mostly from rattlesnake bites.
Possible physical benefits of wearing or holding an emerald include improved eyesight, a cure for snakebite, and even the prevention epileptic episodes.