Hi Scott

The product is a high quality concrete paver in 3 colours.

The product use to be supplied by EcoOutdoor but they no longer supply and must get direct from the manufacturer (Stone Outdoors).

enquiries@stoneoutdoors.com.au 03 8770 6000 https://concreteredefined.com.au/materials/merlo/etch/

Cheers

Also, the pattern is a French Ashlar Pattern which uses various paver sizes similar to:

https://www.graniteworks.com.au/about-granite-works/ashlar-paving-patterns/