Good Magnifying Glass?

Hastings triplet 10x or 14x.
John1

I use a 10x three element in two groups cloth examination lens. The glass is about an inch in diameter.
There is no distortion or color aberration at the edges. It can be used with or out normal reading glasses, and is very easy to use on coins, with a huge depth of field, probably more tham 10mm at a range of 5 cm.
I also use it for the overall examination of faceted gemstones.

For really high powered work, I use a 20x three element in two groups gem magnifying glass. Good for examining tiny, almost sub macroscopic details on coins. It is difficult to use, with an extremely narrow depth of field of less than 1mm. Best for looking for flaws inside gemstones.

Good choice.

I recently switched to a Bausch and Lomb Hastings triplet from a no-name cheap loupe. Both are 10x, but the difference between the two is night and day. Don't know how I ever used the cheap one before. Well worth the extra $20-30.