The main differences between crystal wine glasses and glass wine glasses are in the material and production process:

1. Material:

- Crystal wine glasses: Usually made of glass containing lead, which makes the crystal more shiny and refraction. The addition of lead also makes the crystal softer and easier to cut by hand, resulting in unique patterns and designs.

- Glass glasses: Usually made of silicate and do not contain lead. Glass may be harder than crystal, but the effect of refracting light is not as obvious as crystal.

2. Production process:

- Crystal wine glasses: Making crystal wine glasses usually involves more craftsmanship, including cutting, carving and polishing to highlight their unique look and texture.

- Glass glasses: Glass glasses are usually made through an industrial production process and have a more regular and consistent appearance.

3. Optical performance:

Crystal glass: With better optical properties, it is able to reflect and refract light in a richer way, making it look brighter.

- Glass glass: Although it can also provide good transparency, the optical effect is generally less than that of crystal.

Overall, crystal wine glasses are generally considered a higher grade and more refined option, but are also more expensive. The choice of crystal or glass depends on personal taste, budget and material preference.