We have SGS Professional Certification for our Sterling Silver Items. Customers could go to a professional agency for testing them. 925 Sterling Silver is also suitable for sensitive skin to wear.
The big cubic zirconias are pronged to the jewelry item to secure from loosing. A prong setting is one component of what is known in the jewelry business as a head, a claw-shaped type of binding (typically 3, 4, or 6 individual prongs per head) that is welded or soldered to a jewelry item in order to mount (or set) a stone to the jewelry item.