How to Check 925 Sterling Silver and Moissanite Quality When Buying Jewelry Wholesale from China

Buying jewelry wholesale from China can be a good way to stock a boutique or an online store with a wide range of designs at workable prices. The risk is quality: a listing that says "925 silver" or "moissanite" is only as good as the supplier behind it. Below are practical checks a small buyer can run before and after a first order, without a lab of their own.

1. Ask for third-party test reports, not just a stamp

A "925" or "S925" stamp is easy to add to any metal. What a buyer should look for is a report from an independent testing company that names the sample, the method and the measured silver content. Sterling silver must contain at least 92.5% silver (925 parts per thousand). A good report also shows the date and the company that requested the test, so you can match it to the supplier you are buying from.

As an example, AdornTrade publishes its independent SGS test reports, where a tested 925 silver sample measured 932 parts per thousand silver.

2. Simple checks when the parcel arrives

• Magnet test: silver is not magnetic. If a piece sticks firmly to a strong magnet, the core is probably not silver.
• Stamp and finish: look for a clear 925 mark on clasps or the inside of rings, and check whether plating is wearing through at edges and corners.
• Cloth test: rubbing real silver with a soft white cloth often leaves a faint grey mark as surface tarnish comes off.
• Weight and feel: compare similar pieces from different suppliers; unusually light pieces can be hollow or a different alloy.

None of these is proof on its own, but together they catch the most common problems before you resell.

3. Moissanite: certificates and a tester

Moissanite looks very similar to diamond and is often confused with cubic zirconia (CZ). Two things help:

• Certificates: many suppliers include a GRA certificate for larger stones. Check that the certificate number, carat weight and stone shape match the piece, and look the number up on the issuer's own lookup page.
• A moissanite tester: an inexpensive handheld tester separates moissanite from CZ quickly. Under a loupe, moissanite also shows doubled facet edges because of its double refraction, which CZ does not.

4. Start small, then reorder the same designs

The lowest-risk way to judge a new supplier is to order a few pieces of several designs, test them, and only then scale up. Look for suppliers that sell from one piece per design and show their quantity prices openly, so a test order does not lock up much cash and a reorder costs what you expect.

5. Check the paperwork around the jewelry

• Is the company name the same on the website, the invoice and the test reports?
• Are shipping costs, duties and delivery options shown before you pay?
• Does the supplier answer specific questions about materials, plating and stone sizes in writing?

A supplier that is open about these details is usually easier to work with over time. For reference, AdornTrade is a Guangzhou supplier of 925 sterling silver and moissanite jewelry that sells from one piece per design and includes a GRA certificate with moissanite stones of 0.3 ct and above.