Happy New Year everyone! These leaves are based on a set of Roman-period amber laurel leaves from between the 1st and 3rd Century CE, found in Aquilea, Italy. The acronym, "AN.N.F.F.", stands for "Annum Novum Faustum Felicem" - which translates to "Have a Prosperous and Happy New Year". The original leaves are currently on display at the Museo Archeologico Nazionale di Aquileia (@MuseoAquileia on Twitter). An image of the originals can be seen here: https://twitter.com/PatrimonioFVG/status/947408669393784832
The leaves was made procedurally in Substance Designer as a one day project. Marmoset toolbag was used for the material renders. The single mesh leaf on Sketchfab was made in blender, and is free to download! I displaced and mirrored a subdivided plane. The mesh is manifold, so it should be 3D-printable (I haven't tried it yet though!).