“SU 925 CZ CH” likely refers to a piece of jewelry with specific markings:
SU: This could be the brand or manufacturer initials.
925: Indicates that the jewelry is made of 92.5% pure silver, also known as sterling silver.
CZ: Stands for cubic zirconia, which is a synthetic gemstone often used as a diamond substitute.
CH: Could refer to a design collection, specific piece, or another manufacturer’s code. It may also refer to “China,” indicating the country of origin.
This marking suggests the jewelry is sterling silver with cubic zirconia stones, and possibly from a specific brand or collection.