I haven't yet sold any of my hoard but agree with Latch that Trademe or private sale is your best bet. Look up on Trademe to see what similar items are going for as there are never any bargains for gold on that site - the prices that gold sells for are either realistic or grossly inflated, never below value.
If you have a look at the current spot price for a gram of gold here:
http://www.paydirt.co.nz/gold-price#.UggWuZIwek8 you can get an idea of the minimum price for a private sale. Weigh the item then times that weight by the gram $. Next, times that by the percentage of what ever the carat of the item is, e.g. for the current spot price of
$53.35/gram an 8gm 9ct (37.5% gold) ring it would be:
8 x $53.35 = $426.80 x 0.375 = $160.05.
Never sell for less than the spot value on a private sale. If the items are fairly worn or scruffy then it might pay just to sell it as scrap gold to one of the refiners (not the mall type gold buyers!). In this case then anything above 75% of spot is an ok price.