Brand new jewelers loupe. You should have this in your pocket when you go to estate auctions or garage sales. It will save you a lot of grief. It is 30 power x 21mm and is a triplet lens which will allow you to see any blemish or flaw in your diamonds or jewels. Most jewelry store loupes are only 8 power or 10 at the best. This will show you the closeup flaws that you won't find with other loupes that don't have the power that this one does.. Excellent for fine work such as stamp or money collectors. Call if you wish to pick one up 613-226-7873