Step 1 : Introduction to the question "Which is NOT true about jade?"
...The emerald-green color of jade has captivated humans for thousands of years. This gemstone actually comes from two different minerals, jadeite and nephrite; both appear in a rainbow of colors. Modern gemologists use the term “jade” to describe a gemstone from either of these minerals. Jade was used in the Stone Age for knives and ritual objects, and the imperial court in China favored jade for wind chimes, which could be carved to play different notes.