Artificial silk (rayon/viscose), polyester and "art silk" blends are sold every day as pure silk — often at pure-silk prices. The good news: most fakes fail at least one of the simple checks below. Use several tests together; no single test is perfect.
1. Look for the Silk Mark label
The Silk Mark is a quality label run by the Silk Mark Organisation of India under the Central Silk Board. A genuine Silk Mark tag carries a unique number and hologram and is attached to products made of natural silk. It is the easiest check when buying new.
No Silk Mark does not automatically mean fake — many small weavers are not registered — but a seller claiming "pure silk" at a premium should be able to explain why it is missing.
2. The burn test (most reliable at home)
Pull one thread from the inner edge (never from the body) and hold it to a flame with tweezers:
- Pure silk burns slowly, smells like burning hair, stops burning when you remove the flame, and leaves a black ash that crushes to powder.
- Polyester/nylon melts, shrinks away from the flame, smells like plastic and leaves a hard bead.
- Rayon/viscose ("art silk") burns quickly like paper, smells like burning paper and leaves little or grey, feathery ash.
Test both a warp and a weft thread: a common trick is a silk warp with a cheaper weft.
3. Feel and warmth
Pure silk feels smooth but not slippery, and warms quickly when rubbed between your fingers. Polyester stays cool and slick. Silk also has a faint "scroop" — a dry, rustling sound when the fabric is crushed.
4. Lustre that changes with the light
Hold the saree up and tilt it. Real silk shimmers and shifts in colour because of its triangular fibre structure. Synthetics have a flat, uniform, white-ish shine from every angle.
5. Check the reverse side for a handloom weave
On a handloom saree, the back shows small irregularities, loose floats behind motifs, and slight variations in tension. A perfectly uniform reverse with cut, trimmed threads everywhere suggests a powerloom. Powerloom is not fake silk, but it should cost far less than handloom.
6. Test the zari
Three grades are sold:
- Pure (real) zari – silver thread electroplated with gold, around a silk core. Heavy, soft, and the most expensive.
- Tested zari – copper wire with silver/gold plating. Common and acceptable when priced fairly.
- Imitation/metallic zari – polyester film. Light, stiff and scratchy.
Gently scrape a loose zari thread: a red or copper core shows tested zari; white silver shows pure zari. Imitation zari feels plasticky and may melt in a flame.
7. The ring test (for light silks only)
A light silk may pass through a finger ring. This is only useful for fine silks like Mysore crepe — heavy Kanjivaram and Banarasi brocades will not pass, and that does not make them fake.
8. GI tags and weaver details
Banaras Brocades and Sarees, Kanchipuram silk, Mysore silk, Paithani, Patan Patola and others are GI-protected. Ask for the weaver or society details, the GI label where available, and a proper bill describing the fabric and zari type.
9. Price sanity check
A handloom pure-silk saree takes days to weeks to weave. If the price is far below the ranges in our saree price guide, it is almost certainly a blend, powerloom or imitation zari.
Specific checks by saree type
- Banarasi: look for the weave behind the brocade motifs and check the zari. Full walkthrough: Banarasi silk saree buying guide.
- Kanjivaram: check the korvai (interlocked border joint), the weight and the zari. Full walkthrough: how to identify pure Kanjivaram silk.
- Mysore silk: genuine KSIC sarees carry a unique code and hologram.
- Wild silks: Tussar, Muga and Eri have their own texture and natural colours — see each guide.
Frequently asked questions
What is the easiest way to check if a saree is pure silk?
Look for a genuine Silk Mark tag, then do a burn test on a thread from the inner edge: pure silk smells like burning hair, stops burning away from the flame and leaves ash that crushes to powder.
Is art silk the same as pure silk?
No. Art silk (artificial silk) is usually rayon/viscose or polyester. It looks shiny but burns like paper or melts, and costs a fraction of pure silk.
How do I check if zari is real?
Scrape a loose zari thread gently. Pure zari has a silver core, tested zari shows copper, and imitation zari is plastic film that feels stiff and may melt.
Is powerloom silk fake?
Not necessarily — powerloom sarees can use real silk. But they should be priced much lower than handloom. The problem is powerloom sold as handloom.
Does pure silk wrinkle?
Yes, pure silk creases when crushed but the creases relax quickly. Polyester springs back almost instantly and never softens.