It was sold as Giganteum Metallicum, but it does not resemble what Giganteum Metallicum pictures are out there on the internet.
Does not seem to react acutely to 3-3-3 fertilizer like I use. not sure if this info matters, but some cultivars react very fast to that NPK value.
Problem is the seller Germany) does not even have any Sempervivum for sale with pictures like this one, to try to see what else it could be from his inventory.
Pot size is the typical 9cm (3.5inch) one.
It's been out in the light for 2 months (around 4 hours full sun per day), so the coloring is well set for some time now.