I had put off buying a jewelers loupe for quite sometime, but finally I did go to a gold and gem shop that sold them. I found the loupes to be very inexpensive; mine was only $18.00 + tax.
Since then I have used it constantly at estate sales, collectible malls, and rechecking my own collection of vintage costume jewelry. The print on top of the jewelers loupe is wearing off...I have used it so often! I'm pretty sure it was 10x magnification. The shopkeeper had said that was the strongest I would need for my 'treasure hunting'.
Just recently I have found designer names on some of my vintage costume jewelry, and I found a very tiny STG with a hallmark, for sterling silver, on the backings of a pair of rhinestone earrings! I'm so glad I finally bought my jewelers loupe! :O)
Vintage Sterling Silver Rhinestone Dangling Earrings at BlackRain4'...