It reminds me of the Abalone inlaid Sheaffer's pens of the 1930's.   Of course, this is not the first iridescent pen that Pilot-Namiki has made. Their Nightline Moonlight pen is inlaid with abalone shells as well.

The rich hand-lacquered finish makes the particles of abalone sparkle.

The Raden Fountain Pen is available with a Extra Fine, Fine, Medium or Broad nib. The broad nib can be customized to a wonderful cursive italic or oblique italic. This adds $55 to the cost of this pen. Extra nib units with converters are available. Retail Price:$70. Our price:$60. ($115.00 customized)

Retail: $380.00 Ours: $304.00