Review on Presidium Indicator Bonus DUNKIN DONUTS by Amanda Castillo

I have to agree with the previous reviews it is a complete scam. I have an antique ring and wasn't sure about the gemstones, maybe spinel or ruby, and choosing red the possible gemstones are spinel and ruby! It needs to be calibrated every time you switch gems, it's not as important as the fact that alternatives for the same gem don't solve the problem of knowing which gem is in front of you. I think the previous non-portable version should be the best choice as there is no way to get that many options.