The Hunger Games star posted this picture of the ring, along with two detailed captions, on his twitter page last night. "Here's first pic Miley's ring: It was hand-cut around 1880 or 1890 and it's unique and in its original form". He continued with a (cheesy) second tweet which read, "It's a contemporary design based on vintage aesthetics. The light flashes & sparkles no matter where she moves her hand".
One thing's for sure. It's definitely a sparkler. According to Neil Lane, the jeweller who made the ring, it's a "3.5-carat cushion-cut diamond ring, handcrafted in 18-karat gold with intricately carved diamond floral motifs in an art nouveau pattern. And the centre stone is extra special: it's an antique dating back to the late 19th century".
So what do you think of the latest celebrity bling? Let us know in a comment and see more A-list engagement rings in the gallery below: