This beautiful William Henry exclusive blade steel (patent pending) incorporates copper and stainless steel into a 45 layer Wave Damascus that features a core of VG-5 stainless steel. This steel attains a hardness of HRC 59, excellent by any standards, at the cutting edge. Thuya wood (pronounced two-ya) is from the Thuya tree (Tetraclinis articulata in Latin, and Araar in Moroccan). This biblical tree is a conifer from the cedar family, and is exclusively native to Morocco, where it grows only in the forests of the Atlas mountains east of Essaouira. The praised part of this tree is not the trunk, but the burl buried in the ground. The burl has a deeper color, a more concentrated aroma, and a fascinating grain. Today these burls are very scarce and hard to locate, extract, and transport. Citrine is a variety of quartz whose color ranges from a pale yellow to brown due to ferric impurities. The name is derived from Latin citrina which means "yellow" and is also the origin of the word "citron".