Every Doolin Guitar features a spiral rosette inlay of spalted maple.
The steel string models also feature the Doolin logo in mother of pearl on the headstock.

I offer optional spiral position markers for the fretboard. The center is a pearl dot, while the outer spiral is abalone. This design echoes my rosette up the fretboard.

I also offer custom inlay work - send me a sketch or think of a theme, and I'll create it for you on your guitar. Here's a fretboard vine I did in pearl and abalone:

Here is a dove inlay in white and gold pearl, designed and created by Nancy Conescu:

And here is an eagle in black, white and gold pearl, also by Nancy Conescu. Note her artistic use of the sapwood in the cocobolo head veneer of this harp guitar: