Which episode was this please A woman obsessed with jewellery kills

Which savdhaan India episode was it ? A woman obsessed with jewellery traps other women kills them by poisoning them and then takes away their jewellery.
She worked as a maid in one of the victim's house and tried to kill her and take away her jewellery.
She also acted like a female saint and trapped one woman, she poisoned her and took her jewellery.