The tangle is called "Fiore di Pietro", and it's created by Rho Densmore, CZT. Fiore di Pietro is a beautiful loving tribute to Rho's brother in law. Please read her words on her blog and see the instructions there as well.
The above quote from The Diva's blog describes this weeks challenge much better than I could ever say.
Here's my finished zentangle tile using her tangle design. Rho, you certainly have my permission to use and/or copy my zentangle in any way you prefer: