The refreshed, latest collection from Parker ad. 2021. Sonnet Premium is a huge experience of the Parker brand in creating high quality stationery. The ferrules in Parker Premium pens are deep chemical etched to make sure that the intricate patterns have been made to the highest standards. The new Deluxe patterns are chiseled, giving the effect of a deep texture that can be felt under the fingers. Noble materials The entire new collection has been finished with precious materials. From yellow and rose gold to chiseled silver and nibs made of 18K gold. Each an element of the Sonnet Premium collection has been thought out and meticulously made.