Hi, no idea about the fireplace, but it looks to be a gas fireplace rather than a metho one.
The table was a bespoke table made by DJ's Kitchens, who also did the house fitout. They are based in Kogarah, NSW.
What style dining chairs for this ornate dining table?
Dining Table Debate: Timber or Glass?
Lounge/dining reno with new fireplace
Which dining table and chairs?