Rapper Post Malone is showing off his million-dollar smile…literally.

The rapper’s mega-watt smile reconstruction was done by celebrity dentist Thomas Connelly, cosmetic dentist Naoki Hayashi, Isaac Bokhoor and his team at Angel City Jewelers.

Thomas Connelly shared the news on his Instagram “Post Malone completed his $1,600,000 (USD) smile reconstruction last weekend !! With a smile that shows off natural Porcelain Veneer work framed with 2 Diamond Fangs with a total weight of 12 Carats, Post Malone literally has a $1 million smile!!!”

According to Rolling Stone, the rapper had seen some of the diamond embeds the dentist had done for other artists and athletes and asked whether he could create a whole diamond tooth. Connelly had never done so before but agreed to try for Post. “He’s now got two functional, full diamond teeth,” Connelly said during the interview. “They light up the room. They sparkle, they shine; they’re amazing.”

It took about a year-and-a-half of trial and error to figure out how to create the diamond teeth, then a few more months to insert them. “It’s very difficult to cut holes in diamonds without destroying them,” Connelly explains. He used 40 carats of diamonds sourced from Belgium and cut in Israel, coming in at $1.6 million.