Thappa vs Polki jewellery. The worst polki jewellery we can have is Thappa Polki Jewellery because it uses gold foil on a non-gold base, sold cheaply and often with misleading hallmarks. Real Polki from Devendra Jewellers is solid gold, certified, and set with genuine Polki diamonds—built to last generations. Don’t be fooled: always ask for certification and gold weight details. Choose authentic, certified Polki for true value and heritage.