For those of you who have achieved this gold color on gum paste decorations, what product works best? Have you used Wilton's gold luster dust with success and if so, what did you mix with?..vodka?

My favorite is CK Imperial Gold (for decorative purposes only) mixed with vodka, but I also like Pastry Ideale Gold Dust Powder Color (also for decorative purposes only).  They both give a beautiful, rich finish, but should only be applied to decorations which can be removed before consuming.

This is two coats of CK Imperial Gold mixed with vodka.

Thanks! I'll look into those!

Rokelm antique gold, dry dusted on to modelling chocolate gives a very similar and beautiful 'real gold' look.

If you're in the US, Rolkem gold is also not edible [like the other 2 mentioned above], so it's for use only on decorations that will be removed and not eaten.

Roxy and Rich makes some beautiful, edible gold hyrbrid luster dusts, so no worries about needing to rely on the client to remove anything and not serve it.

roxyandrich.com

I am in Australia and the cake shop sells it as edible.

Yes, it is sold in Australia, and some other countries, as edible. 

The food standards vary from country to country.  In the US, products made using real metals are not considered edible. This includes gold, silver, copper, etc. 

This is why every food producer needs to understand the food safety policies of their country and their county/city.  Products made in other countries are made using different standards, so it's often safest to find out where a product is made and to purchase according to where you live versus what looks good.

Thanks everyone for your responses and sorry for the late reply. Just wanted u to know that since I didn't have time to wait for a mail order from your suggestions, I went on a whim and decided to try to spray the gum paste with Wilton's edible gold spray and it worked like a charm! I used 2 coats. Just thought I'd share in case anyone ever needs to try it out themselves. It was so easy and fast! 

thank you for the update so much -- beautiful frilly pretty cake nice nice workmanship, not to mention sweet cake stand -- once again thanks for sharing and bravo for going edible 

best to you 

You did a wonderful  job, @aaabeginner ‍!  Gorgeous ruffles and bow!  I use the Wilton spray quite often since I do not have the coveted airbrush and it works just fine.  I like it to color the whole cake gold.

Thanks guys!

Adorable!