http://www.theparadeofbrides.com/moissanite-solitaire/
Moissanite Solitaire

How to tell if a diamond is real just by looking at it?
I held my mother’s solitaire and my cubic zirconia close together, and they seem pretty much the same visually… Maybe moissanite would look even more similar to a diamond?!
Take them to light , when diamond shows up to light it will have rainbow colors shining. Zirconia will just have like a yellow light. also if it is an actual diamond you should be able to cut glass with it , so get a cheap glass and test it.
2ct Moissanite Princess-Cut 14K Raised 4-Prong Solitaire…