I have 4 of Made-in-China 10X loupes. They were $1 each at a flea
market and find them helpful removing splinters, examining, soldered
joint inspection, PC components, etc. The quality is good enough for
me, but I'm not cutting diamonds either. I have a lighted lamp and
find it useful for sharpening and fine work, but natural light is
best. You will find you will need more light as you age. Try reading
glasses too.