Thank you for your interest! These are simulated diamonds...I've attached a link to Wikipedia so you can get a better idea of what it means :) I got them using a Groupon for $20. It showed that they normally sold them for $99. Not sure a jeweler would give you anything for them, but they are fun either way :) let me know if you have anymore questions. http://en.m.wikipedia.org/wiki/Diamond_simulant