DON'T try it, unless you are literally only going to make one jar and use it within a couple of days.
I made cumquat marmalade - my thinking was it was a very low fructose fruit anyway - and it turned out beautifully except after a few days it started turning back to white (like the white dextrose). I made a big pot of sugary marmalade at the same time and there was no problems with it.
I thought it might be like candied honey so I heated it again, but it didn't help.
David said that dextrose isn't a good preservative like sugar is. So anything needs to be used within a few days even if it's in the fridge.