8" 925 The estimated retail value for a sterling silver princess-cut citrine tennis bracelet typically ranges from $85 to $350, depending on the total carat weight, stone quality, and brand

The 925 stamp indicates that the bracelet is made of sterling silver, meaning it consists of 92.5% pure silver blended with 7.5% other alloy metals for strength. 

The SIS engraving is a maker's mark, which serves as the unique signature identifying the specific manufacturer, designer, or workshop that produced the jewelry piece