Astone that is beautiful, it has five virtues. there is warmth in its lustre and brilliance; this is its quality of kindness; its soft interior may be viewed from the outside revealing [the goodness] within; this is its quality of rectitude; its tone is tranquil and high and carries far and wide; this is its quality of wisdom; it may be broken but cannot be twisted; this is its quality of bravery; its sharp edges are not intended for violence; this is its quality of purity.