Pure Silk Chanderi vs Cotton Chanderi — what is the difference and how to identify?

Chanderi fabric comes in three varieties, and identifying them correctly matters for pricing and customer trust:

How to identify:

• Burn a thread from the weft: silk burns like hair (crushable ash) — cotton burns like paper (feathery ash)
• Pure silk Chanderi feels warmer to the touch due to protein fibre friction
• Genuine Chanderi has subtle "butti" (woven motifs) — if absent, it may be a machine imitation