FAKE vs THE REAL THING, BABY
You bought it, you wear it, but, OMG!!!, is it fake!!!!! (Note: the
following incidents are true, the names have been removed...you know
Q: My diamond wedding ring, that I've had for 43 years, broke! The diamond BROKE! My husband is gone and I'm so upset, it's like we were never married!
A: Hold your horses! Diamonds break. Yes, they are the hardest stone known, however, that doesn't mean they can't break. The use of the words 'hard' and 'hardness' as jewelry terms means: how easily a gemstone scratches. SCRATCHES, not breaks. How easily a gemstone breaks is referred to as how tough, or durable, the stone is and is relative to the stone's cleavage, which is similar to how wood will split along it's grain. Oak is very tough, balsa - not so much. Diamonds are very tough, opal - not so much. Nonetheless, even the titans can fall and so surely can oak be nicked and diamonds be chipped.
Q: So, how do I keep my jewelry safe?
A: Is that why you bought it? If so, put it in a safe and you're done. If you bought it to enjoy, then wear it and fix it and replace it as needed. Can any man imagine buying a nice car, motorcycle, or truck and not driving it? If I had a Cobra, I'd be driving it, no two ways about it!
Q: My ring that I've had for a long time turned my finger black! Is it not real?
A: First, check if it's stamped. Even if it's stamped the metal could possibly be something other than what it is, but, if you've got a receipt for a 14k gold ring, then that should be what you've got! The laws in the US are very straightforward about this. Now, what your situation probably is is all about chemicals. Something in your life has changed. Either your body chemistry or some product you use such as soap, hair products, laundry detergent, etc. Something in your environment is having a chemical reaction with the other metals in your gold alloy. Wash your finger, wash your ring. If it really bugs you you could paint some clear nail polish on the inside shank to create a barrier between your skin and the metal.