Mumbai – Since Nirav Modi’s PNB scam came to light, shares of Gitanjali Gems remained weak for the eighth straight session and have plunged 60.5 per cent, eroding its market capitalisation by Rs 450.83 crore, since the Rs 11,400 crore PNB scam came to light. In last eight trading sessions, the stock slumped 60.5 per cent, wiping out Rs 450.83 crore from its market valuation.On NSE, the stock slipped 4.99 per cent to hit its lower price band of Rs 24.75.