Gem Egg

The Gem Egg is a prismatic-tier egg first released during the Smithing Event and later folded into the permanent Pet Eggs Shop. Prismatic is the top color band in Grow a Garden, so an egg carrying that label signals a pet pool weighted toward the rarest, most desirable outcomes rather than common filler — which is exactly why this egg earns a place on most serious players' shopping lists.

The smart part of the Gem Egg's design is its dual availability. Because it migrated from a limited event into the standing Pet Eggs Shop, you don't have to wait for a seasonal window to chase its pool — it's a reliably stockable prismatic option, which is rare and valuable in a game where most high-tier eggs vanish after their event.

My take: if you're building toward top-tier pets and the Gem Egg is listed in the Pet Eggs Shop, it's one of the more dependable prismatic buys you can make. Confirm the current pet pool and any posted odds in-game before going deep, but as a standing prismatic source, this egg is worth budgeting for over one-off event eggs you can't farm consistently.