Crystal Wyvern Egg

An egg from the Crystal Isles wyverns

Laid after two Crystal Wyverns mate, this egg comes from the Crystal Isles expansion map and is listed for both ARK: Survival Evolved and ARK: Survival Ascended. Its description: "Tremendously nourishing by itself, this egg provides extraordinary nutritional value in many cooking recipes." The ARK Wiki names three variants, the Tropical, Ember and Blood Crystal Wyvern Egg, and our records list the Tropical Crystal Wyvern as a creature that drops it.

Finding eggs in the desert

In the desert region of Crystal Isles, the plates that ring the Desert Wyvern Hive hold nests of the tropical, ember and blood types, with fertilized eggs inside. Taking an egg while wild Crystal Wyverns are nearby turns them hostile. The ARK Wiki warns that the wyverns there outpace their regular counterparts, which leaves almost no chance of outrunning them.

Ways to grab one safely

• Traps: a trap built near the hive to hold or kill wild wyverns can take some of the pressure off.
• Oviraptor: positioned close enough, a tamed Oviraptor will take eggs from the nests (tested as working in 306.89 on official servers). Collecting the egg from the Oviraptor avoids angering every wyvern in a wide radius, as the game does not count it as your theft. Take the egg before moving off: carrying the Oviraptor away while it still holds the egg is reported to delete the egg and to stop it from grabbing eggs afterwards.
• Wyvern or Crystal Wyvern: an already tamed one is the easiest option, and the Tropical Crystal Wyvern speeds up when it touches water.
• Tropeognathus: with the jetpack boost on its saddle it is agile and can dodge the wyverns' attacks; it can have around 1500 health and can carry several eggs in one run.
• Argentavis: it has the carrying weight for eggs, but its speed can make the escape hard.

Incubation and kibble

For hatching, the egg needs between 75 and 85 °C (167 to 185 °F); outside that range it starts losing health. Hatching takes 4h 59m 58.56s, and an Egg Incubator set to the best temperature can shorten that by up to 20%. A female Crystal Wyvern needs 18h to 2d before she can lay again. Instead of being hatched, the egg can be eaten or turned into Extraordinary Kibble, which the wiki links to taming creatures such as the Yutyrannus, Megalania, Griffin and Rock Elemental.

Weight and spoil time

An egg weighs 37.5 and, per the ARK Wiki, does not stack. It spoils after 192 hours, or 8 days. The wiki dates the egg to version 311.74.