In a spectacular event, a Mumbai-based devotee of Lord Siddhivinayak has donated a diamond-studded mobile phone as part of his offering to the Lord. H B Jagtap, CEO of Siddhivinayak Temple Trust said that the diamond-studded Motorola phone is valued at Rs 3.33 lakh. The mobile phone will be auctioned on July 22 and the proceeds will be utilised towards the trust's social activities including providing medical help to the poor and needy. The auction will take place in the temple premises at 11 am, he added.