More Details About Project Echo-Stone's finish is usually the most attractive feature of the product, but in this case, we were also able to demonstrate the versatility of a cast product. Cut stone would have been cost prohibitive for this project's budget. Structural GFRC would have been impossible without the addition of significant structural steel to support it. Echo-Stone was used to create incredible detail and accuracy that was installed around light gauge framing. The result looks like the stone columns and arches of a structure that had been around for centuries.