Glass lenses are the most common type of magnifying glass lenses, and they are known for their clarity and scratch-resistant properties. They are made from high-quality glass materials, such as crown glass or Flint glass, which have excellent refractive properties. Glass lenses also have a relatively high index of refraction, which makes them ideal for high-powered magnification.

Acrylic lenses are another popular choice for magnifying glass lenses. These lenses are made from a type of plastic that is known for its lightweight, shatter-resistant, and UV-protected properties. Additionally, acrylic lenses are relatively affordable, making them a cost-effective option for people looking for a magnifying glass.