Date First Available November 18, 2011, Dr., Ph. Made from the finest ground pigments, the unmatched color intensity of Dr., Ph. Stunning colors with a pearl shimmer and shine and unmatched color intensity Great for use with pens (both calligraphy and dip pens), airbrushes, and brushes. Dr Ph Martins Iridescent - Black Sparkle - Blots Pen & Ink Supplies Great for use on paper, wood, board, metal, and some plastics., Dr., Ph. No start and stop marks. Designed specially for calligraphy, to accent watercolor work, or anywhere where you need to add a magical shine and shimmer that only pigment-based iridescent color can provide. Hydrus Watercolor Dr. Ph. MARTIN'S Iridescent Calligraphy Color 1oz - 7R Iridescent Blue Fountain Pen Dr. Ph. Martin's Calligraphy Color (9R) Ink Bottle, 1.0 oz... Dr. Ph. Martin's Iridescent Calligraphy Colours are shimmering, highly reflective colours that are lightfast, waterproof, archival, and permanent. Made from the finest ground pigments, the unmatched colour intensity of Dr. Ph. Martin's Iridescent Calligraphy Colours gives you the ability to cover dark surfaces with a dynamic range of... Made from the finest ground pigments, the unmatched color intensity of Dr.Ph. Lightfast, waterproof, archival grade color made from the finest ground pigments