We know that investing in a pricey piece of jewelry doesn’t come easily to some customers. Then again, there are jewelry customers who may get carried away by their emotions and not really think a big purchase through.  In the end, you want all of your customers to be happy. So how do you help them make that big ticket investment decision? We loved the 3-step should-I-buy-it test an LA-based jewelry designer recently told Time.com, and we thought it was a great jewelry shopping tip worth passing on to you as something to keep in mind that could help your customers.

1) Can you see yourself in it? “When looking to invest in jewelry, one should be able to picture themselves wearing the piece in their daily life—from dropping their kids off at school to a night out,” says Meyer, who is married to actor Tobey Maguire and counts Jennifer Aniston, Julianne Hough, and Camilla Luddington among her celebrity fans.

2) Does it work with other pieces you own? “I often find myself layering and adding to my stacks,” she says.

3) Can it stand the test of time? “If the piece has special significance and you love it now, chances are you will love it just as much 10, 20, even 30 years down the road—and eventually pass it down for generations.” See some of Jennifer’s signature pieces here.