Most people who contact us about a rug aren't sure whether it's genuinely handmade. That's completely understandable — the difference isn't obvious from across the room. But there are six physical tests that give a clear answer without any tools or specialist knowledge.
The golden rule first: Always look at the back. The reverse of a rug reveals more about its authenticity, construction, and age than the front will ever show.
Test 1: Flip It Over — Check the Back
Turn the rug completely over and study the reverse. A genuine hand-knotted rug shows the pattern from the front mirrored on the back, with individual knots visible — small nubs in a regular but imperfect grid. You'll see slight colour variation between knots tied by different hands.
Machine-made rugs have perfectly uniform, mechanically regular backing — often with a separate canvas or latex layer glued on. If you see a foam or fabric secondary layer peeling at the edges, it's machine-made.
Test 2: Look at the Fringe
On authentic hand-knotted rugs, fringe is a direct continuation of the warp threads — the structural fibres running the rug's length. Pull gently on a strand: it should feel as if it's truly grown from the rug's body.
On machine-made rugs, fringe is sewn or glued on afterward as decoration. Look for a visible seam or line of stitching where fringe meets the rug edge. Perfectly uniform fringe spacing is also suspicious — handmade fringes have natural tiny variations.
Test 3: Study the Colours and Wear (Abrash)
Stand back and look at the main field colour from the long side. Genuine antique rugs dyed with natural vegetable dyes show subtle horizontal bands of slightly different shades — a touch deeper in one section, lighter in another. This is abrash, caused by natural dye batches that could never be perfectly colour-matched.
Far from being a flaw, abrash is loved by collectors as proof of authentic hand-dyeing. Perfectly uniform colour across the whole field usually indicates synthetic dyes — or machine production.
On the wear: genuine antique rugs show organic wear concentrated in logical areas — traffic paths, near doorways, where furniture stood. Machine-made "vintage look" rugs are uniformly distressed all over by chemical washing.
Test 4: Count the Knots (KPSI)
On the back, find a 1-inch square area and count the knots. This gives you KPSI (knots per square inch) — a core quality indicator.
| KPSI | Quality Level | Typical Rug Type |
|---|---|---|
| Under 16 | Very coarse | Tribal/village, flat-weave kilims — still collectible for design |
| 16–40 | Medium | Good village and provincial workshop pieces |
| 40–100 | Fine | City rugs: Tabriz, Kashan, Isfahan, Heriz |
| 100–300 | Very fine | Top-tier workshop pieces, some Turkish pieces |
| 300+ | Exceptional | Finest Qom silks, Hereke, museum-grade pieces |
Test 5: Feel the Pile Variation
Run your hand across the pile in different directions. Hand-knotted rugs have subtle, natural irregularities in pile height — tiny variations caused by individual human hands tying individual knots. Machine-made pile is mechanically perfect and completely uniform.
Quality hand-spun wool also has a natural lanolin warmth and slight grip that synthetic fibres (nylon, acrylic, polyester) cannot replicate. If the pile feels slightly plasticky or slippery, synthetic fibres are likely.
Test 6: Look at Wear Patterns
Genuine antique rugs show wear that tells a story — more compressed pile along traffic paths, possible small repairs at stress points (edges, borders, doorway positions), slight fading on the side facing a window. The wear is uneven and logical.
Machine-made reproductions sold as "vintage" are chemically washed to produce uniform, all-over thinning and artificial aged colouring. The distressing covers the entire surface evenly — something that doesn't happen through actual use over decades.
Submit three photographs — front, back, and a detail close-up. Our specialists will identify the origin, confirm authenticity, and give you a genuine purchase offer within 48 hours. Free, no obligation.
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