Men's prayer beads, Yakusugi, tiger's eye stone, Rikyu tasselWorld Heritage Yakusugi with fine annual rings Yakusugi trees are very old. Generally, cedar trees are said to be 500 years old, but Yakusugi trees are extraordinarily old. Trees over 1000 years old are called Yakusugi, and those under 100 years old are called Kosugi. As you know, Yakusugi is also a World Heritage. We have made this rosary from this World Heritage Yakusugi. We can only process fallen Yakusugi trees from the World Heritage sites, so we