What is the difference in print finishes?

Glossy option is perfect for detailed/technical prints or photograph images. However, please note that glossy prints cannot be framed due to the fact that the print sticks to the glass.

Matte finish offers a flat, texturized finish with little to no glare. Some find this finish is better for paintings and darker prints although it works for any type of image.

Lustre is wonderful for both, capturing the best qualities from Glossy and Matte and combining them into one beautiful finish. Please note, the Lustre finish has more saturated inks which can sometimes result in a darker image.

These descriptions describe the 3 different prints the best and I used the description of them as found on deviantART.