What Yusuf Zuck brought back was far from just "not bad." It's important to know that in the market there's a distinction between genuine and fake jade. With today's technology, many can age inferior jade to make it look like ancient jade, and they can even manufacture synthetic substances into high-grade jadeite.
Therefore, even in the antique market, where some have been collecting for a lifetime, there is a chance of being deceived.
However, whether it was the jade Yusuf procured last time or this time, he was never fooled.
Miles O'Brien was the first to notice something special about the few pieces of jade that Yusuf had left behind because after he left, she returned to the shop and began to study them closely.
But... the more she looked at them, the more she was astonished by these casually bought pieces of jade; their water content, skin, and texture were all top-notch quality.