The advantage of ceramic is not so much in the realism as it is in the fact that they can handle much more heat than conventional gas logs without breaking down or cracking.
The only company that still makes 100% Kiln Fired ceramic gas logs in the USA is Glo Fire.
They make them from clay and then fire them in a kiln at nearly 2000 degrees for about 60 hours.
What this really means is that the logs can handle more fire...so the the burner that they use will do just that...put out more flame.
The ceramic also gets red hot and glows (hence the name "Glo Fire")...and will radiate more heat into the room...even after they are turned off.
The manufacturer is so confident in their product that they have a 100 year "transferrable" warranty!
There are many other brands of gas logs that will look very realistic...but won't have the flame or heat output that the Glo Fire logs have.
I can tell you where to get more info if you want...I just don't want to use this forum to plug a web site.
The Gas Log Expert
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