"Zircon has a hardness of 8, and it can't scratch jade but can scratch glass, because the hardness of glass is between 6 and 8."
"I remember seeing zircon products for sale in this store when I first came in. If the lady doesn't believe it, you can get another zircon product to test. Comparing the two products should determine the outcome."
As Huo Sining spoke, he took the zircon necklace from the saleslady's hand and drew it across the corner of the glass countertop. With a sharp and ear-piercing 'zzt', a scratch appeared on the glass.
The saleslady's eyes swelled with shock, and she bit her lip, unsure whether to listen to Huo Sining or stubbornly insist that the necklace was a diamond one.
She looked to her colleagues not far away for help, and soon, several other salesladies gathered around.
Seeing the necklace, their eyes met with a flicker of understanding that there was an issue. One of the more articulate and astute salesladies said:
