I fell in love with Cobalt Jazz (after overcoming my dislike of the name). This is a rich, regal almost electric blue ink and reminds me of Lapis and King Tutankamun's golden sarcophagus. It has the most amazing red sheen that compliments the gold perfectly. It has been a joy to use this ink. This is one I would happily buy gallons of...! I have struggled to capture the true blue of this ink with little luck.I may try and upload scans later if I can. Swatches on BlacknRed, Breeze Notebook and Rhodia