Good catches on the details!
This might be by design, but I found that gems on the ground in the post-forest camp are kinda hard to see:
Yeah, this isn't super intentional and will probably change. Camps still have a lot of artwork yet to happen (eventually they'll all look very different and have visuals tied to the biome you just came from)
Vert Laser Seed has a planting cost of 0 crystals? Is that by design? If so, there's a small grammatical error, as it says "Costs 0 crystal to plant".
It's intentionally 0 crystals -- it was previously a bow-and-arrow instead of a laser which made it a pretty weak weapon so we changed its cost to 0 to make it more enticing. I think it's definitely strong now as a laser, so we may change it back to costing 1, but either way we need to account for suits being free so that's a UI change we'll have to make. Thanks!