I own several Conklin Duragraph Abalone pens and they are truly wonderful. They write perfectly, meaning they are perfect for me and Truphae has offered them at the best price I've ever seen. Highly recommend.
I love the Abalone as a throwback reminiscent of the Art Deco period. I have both this and the Endura model and I prefer this one. It's lighter and feels great in the hand and I enjoy the contrast of the Black Resin against the Abalone. The J. Herbin 1798 Vert Atlantide and 1670 Emeraude de Chivor both write well in it. Truphae shipped fast.