Difficult to say from that picture.

Here is the facebook post in which this photo appears, may include a bit more information. The slab name may be Aida?....

Thank you so much for finding the name! Why would it be a bad idea to do quartz as the backsplash behind the range?

Search the houzz threads on quartz counters and heat.

I recommend reading threads about it here (search "quartz behind range", for example, and you can see some of the discussions) - here are a few examples:

https://www.houzz.com/discussions/6138998/quartz-behind-range#n=13

https://www.houzz.com/discussions/5748058/full-quartz-backsplash-behind-pro-range#n=11

The TL;DR is that as long as you are following manufacturer's instructions - you should be fine, but if not - you may end up with a scorched backsplash.

Thanks so much for alerting me to this. I was aware that quartz wasn't heat proof, but did not think about it as behind the range. I looked through the threads you sent (so helpful that you included those links) and am doing more research. When you say you have to follow the manufacturer's instructions you mean the quartz manufacturer or the range? Consensus seems to be that the heat source has to be 6" from the quartz.

When you say you have to follow the manufacturer's instructions you mean the quartz manufacturer or the range?

Both should be followed. Based on this thread, for example, some of the commenters mention "... as long as the range manufacturer's installation instructions are followed", as well as "The Quartz warranties of all the manufacturers... say it cannot be installed directly against a heat source".

Consensus seems to be that the heat source has to be 6" from the quartz.

Same thread mentions "Install the appliance with a 12" clearance between the back of the appliance and the estone" - so every appliance+estone combo may warrant different guidelines - so it's best to consult the manufacturers' instructions.

Got it. We will be sure to ask the fabricator, contractor, our architect, everyone involved before pulling the trigger on this. Thank you again!

You might be better off, to pick a marble since you can get a similar look.