How to authenticate Stone Island: what we check on every piece
Stone Island is one of the most copied brands out there, so authenticating a piece properly matters. Every piece we sell is checked before it is listed. Here is what to look at, and what you can check yourself before buying from anyone.
Step 1: Check the Certilogo code
Newer pieces carry a Certilogo label with a code you can verify online through Stone Island's official verification. Certilogo was introduced from around Spring/Summer 2014, so anything older won't have one. Be aware that a fake code can sometimes scan as genuine at first and only get flagged once it has been checked many times, so a pass is a good sign, not a guarantee. If the result says the code has been used too often, treat it as a red flag.
Step 2: Extra checks, especially for older pieces
No Certilogo? These are the checks that matter.
The ART number
Decode it with our ART number checker to see the season, year and line, then search the number and compare it with photos of that exact garment. The model, colour and details should match.
Ending in 222? On older pieces that only have an ART number and no Certilogo code, an ART number ending in three 2s is fake in our experience. Two 2s in a row are fine. Read why.
The labels
Look at the main label and the wash tag. Text should be clean and evenly printed, with no spelling mistakes, odd spacing or blurry lettering. Fakes often get small details wrong on the wash tag, so read every line.
Stitching on the labels
Look closely at how the labels are sewn in. Genuine stitching is neat and even. Messy, loose or uneven stitching is a warning sign.
Step 3: Zips, buttons and hardware
Genuine hardware feels solid and is finished neatly. Cheap, light or rough-edged zips, buttons and poppers are a warning sign. Check that the branding on the hardware looks right.
Step 4: The badge
Look closely at the compass badge, usually on the sleeve. The stitching should be neat and even, and the badge should look crisp rather than fuzzy or flat. Compare it with a piece you know is genuine.
Step 5: Fabric and finish
Stone Island is known for its fabrics and dyeing. If the fabric feels thin, flat or wrong for the garment, take that seriously. Look at the stitching and overall finish too.
Step 6: Where you buy
Be careful with prices that look too good to be true. Buy from sellers who show clear photos of labels and tags, are open about condition, and will send more pictures if you ask. That is how we do it: all photos are taken and edited by us, and any significant flaws are always clearly mentioned.
One important point
No single check proves a piece is genuine. A good ART number, for example, can be copied. Authenticity comes from looking at the whole garment together.
Want us to check yours?
Send us photos and we'll give you our opinion. Get it authenticated for £1.49.