There are different kinds of crystal cases in the market. Most of them claim themselves to be made with Swarovski crystals. For sure we know by going this website with the ID, we know they are real.

http://brand-partner.swarovski-elements.com

What if you don't have that ID with you? We would suggest you to do some simple test. Here is what we have done with an exposure meter.

Start the video now and see our findings.