This is driving me nuts. I had a colleague who was a fan of a particular brand. She had an earring and necklace set in silver with black inlay of their logo. I believe she also had a wallet.
The logo is a simple shape, either like a cross, or a T, or something similar, but I remember rounded parts to it as well. It’s a striking but simple logo.
I think they may be primarily a leather brand, although they also sell jewelry. They may or may not be Latin American. It’s definitely not one of the big well-known luxury brands.
I seem to recall it starting with a T or F, but that could be a false memory. It may also be Mexican. I’m thinking its a brand sold in its own small boutique. At least, I’ve never seen it in retail stores.
You look like you’ve found it, but from the description I was going to suggest Heidi Klum/Mouawad or Van Cleef(Van Cleef sued Heidi Klum/Mouawad for copying the clover design and they folded).