travelling to india for a wedding, want to carry my jewellery?

i will be travelling mid march for a wedding, i have all my jewellery here half brought from here and half for india
how do u people managage to carry jewellery purchased from here? i dont want them to be put in locker as its a wedding i want to used them all
have any of u traveled will jewellery of 150gms to india? what is the procedure to declare?
which is better way to take the jewellery in hand bagage or wear them?
how is the security at chennai, banglore airports?
any one recently travelled to any of these airports?
plz help