Paul, thank you so much for your kind words! I've never published the criteria that I look for when trying to spot a reproduction, but I did a blog "The Secret Lives of Singing Bowls" some years back about what we look for to authenticate an antique singing bowl. You can find the link to the blog in our media section. Your question about Tibetan cultural heritage is a good one. Although we refer to them as "Tibetan singing bowls", that moniker was coined by the hippies as they were exposed to the bowls by Tibetan exiles coming into Kathmandu in the 60's after the Chinese occupation of Tibet. In fact, singing bowls are a pan-Asian practice, and all of the antiques that we source today are coming out of India. It's worth noting that India gave Tibet its bowl tradition somewhere around the 7th century CE, along with Buddhism. Our mission is to keep Tibet's cultural heritage alive, and every time you play your bowl, you are helping us fulfill
that. Thank you!