According to the sticker they are imported from Chile.
I was so intrigued by its look and teardrop shape that I bought some to taste test.
Cut appearance - A+ (Looks like a heart, nice touch Chile)
Taste - C+ (Wha Happened?)
Sadly the Lemon Plum was in no way the wildly exotic taste sensation I was hoping for.
It wasn't bad, it just tasted like a slightly more mellow citrusy plum.
Note - Just like any plum you really have to wait until it is ripe otherwise it is tart city.