It could be makers initials or a Chinese import mark.I would guess that its probably the makers initials though as 925 denotes 92.5% silver by purity which is English/Sterling silver often considered the best.
The value of a 3 strand 925 Italy KC sterling silver necklace is approximately $50.00. A local jewelry store or pawn shop would be able to give you a better appraisal because they can look at the item.
Seta 925 is the name of a company and the metals that made the necklace and ring. A marking of 925 is at least 92.5% sterling silver.
The "925" probably refers to the purity: 925/1000 gold.
AU is the symbol for gold... 925 refers to the purity of that particular piece...
It may be the maker of the necklace. Like the trademark. Hope this helps.
The .925 means that the necklace is sterling silver. Silver is not usually used in its pure form, because it is too malleable and would bend too easily.
92.5% sterling silver 7.5% copper or other metal
It means that it is gold electroplated silver. The 925 means purest silver. The piece is not gold, it is silver.
The JJT probably indicates the manufacturer. The 925 probably indicates Sterling Silver. The CZ probably means that any stones set in the necklace are Cubic Zirconia.
The 925 is a sterling silver mark. I would doubt if diamonds were set in this . They are most apt to be crystals or paste
Star Gold "could" be the brand! 925 used mostly on silver items!
OTC stands for: OTC International Ltd.