This store is located in the Grand Canal Shoppes at the Venetian, not too far from the main front entrance on 2nd floor. Above the casino floor and you'll see the huge beautiful ceiling mural near the stairs/escalators.
I didn't buy anything because I was afraid something might break in my suitcase. But that being said, they also have an online website you can order from! It's a neat store to check out in person or online.
http://www.vomfassusa.com/