I have found out that you can get Glass Gem Corn in Australia, from Western Australia.
Merribee's organic farm in Nannup, WA sells the corn seeds for $3.50 per packet, plus a once fee of $2 for postage in Australia.
I have ordered some and am VERY excited about getting them and planting them in my garden.
I will just have to wait for my other corn to finish, so that the 2 varieties don't get cross pollination.
As soon as the seeds arrive I will upload a picture and keep you all posted.
For anyone interested. Please contact Bee
I emailled Bee firstname.lastname@example.org
You can access their seed catalogue here
For more information please see http://www.merribeeorganicfarm.net.au/