[Zone 5 & 6 Spoilers] I need the naming conventions

[Iscah]

When you get the sightseeing log for the mosaic in solution 9 it reads the following: This popular café is found in Solution Nine's commerce sector. The races of Alexandria are named after stones, and calling the shop “Mosaic” was in acknowledgment of the colorful work of art that is created when the people gather together.

There's a similar explanation from Sphene when you tour the city:

In our continent, the races are named for stones. There's the Hyune, who resemble some Tonawawta; the tall and graceful Eldite; and the dimunitive and affable Milalla.
When they all gather here, they appear as a mosaic of colors. Thus did the founder choose to name the café.

Either way, I feel that this seems like a translation error. Neither the race names nor the Hyune/Milalla names have a stone theme (unless they're very unfamiliar ones), only Eldite.

Additionally, neither explanation directly connects the "people as stones" to "stones in a mosaic", instead just talking about a mosaic of colours, which could be said regardless of how the races are named.