Set comes with the pen, gift box, 4 cartridges, piston converter, certificate, and a 3-year warranty card Fine-point (0.35 mm - 0.4 mm stroke width) stainless steel gold-plated nib. Hand-inlaid, hand-polished natural Tahitian, oceanic-origin black mother of pearl on the cap. Black mother of pearl can change colors in the light. These colors can range from turquoise, pink, Screw-on cap. Hallmarked solid 925 sterling silver lower barrel. 18k gold-plated solid brass fittings. Platinum plated grip section The fountain ink refill is a Standard International / European size cartridge and is selectively compatible with a variety of commercially available fountain ink refills Diameter: 13 mm, Length Posted: 166 mm / 6.54 in, Length Capped: 148 mm / 5.83 in, Weight: 42 g / 1.48 oz. Every Xezo writing instrument is guaranteed against all defects in workmanship and parts for 3 years from date of sale