Is this real 14k gold or plated?

It is listed as 14k white gold, so the metal itself is solid gold alloy, not a plating over brass or steel. White gold is usually rhodium-finished for a bright white look, and that finish can wear over years.

How wide is it compared with other tennis necklaces?

At 3mm it sits between delicate 1–2mm lines and chunky 4–5mm statement chains. That makes it noticeable at the collarbone without looking heavy.

Will it work for everyday wear?

It can, but tennis settings expose the diamond edges, so hair and fine knits may catch. Many owners reserve this style for evenings and events and wear a plain chain day to day.

What should I check before buying?

Confirm the total diamond carat weight, the diamond clarity and color grades, the chain length, and the clasp type. Those four details decide how it looks and how securely it wears.

How does it compare with a designer tennis necklace?

You get the same 14k gold and diamond format without the brand premium. You give up a recognizable name and stronger resale, and you rely on the brand's own grading rather than a luxury house's.