Don,t buy any jewelry in Lucky Plaza cause its expensive.Have a look at Poh Heng along Orchard road or go to Serangon road or China town.You have look arounf first and compare the prices.You have to haggle like for example the price is 200 dollar try to haggle it of 150 then will adjust the price by calculating it.Or other tactics is show the money and tell the salesperson thats all your budget take it or leave it then say I will find another that give you what you want.
In Singapore gold jewelry is price by grams not by piece.You can haggle in Singapore but not in department store.
Or if you plenty of time go to different town like Toa Payoh, Yishun,Paya Lebar,its easy cause plenty of transportation. If you go by train to any direction or taxi and it cheap.