In Shipwrecked, fishing with a Trawl Net in deep Ocean has a small chance to catch a Blue Gem. The chance is higher during Hurricane Season and Dry Season. Magma Piles found in Magma Fields also have a chance to drop Blue Gems when dug.
Don't Starve Together Edit
In Don't Starve Together, the Dragonfly and the Malbatross drop Blue Gems upon death. Blue Gem Deer also have a chance to drop them. Blue Gems can be used to craft a Salt Box and inserted into Cratered Moonrocks to acquire a Blue Moonlens.
|Obtained by inserting the Gem into the Cratered Moonrock.|
|Pickable without tools||Cut Grass • Twigs • Cut Reeds • Petals • (Seashell • Dubloons )|
|Obtained using||Log • Living Log • Charcoal • (Palm Leaf ) (Cork )|
|Obtained using||Rocks • Flint • Gold Nugget • Nitre • Gems • Marble • (Charcoal • Coral ) (Moon Rock )|
|Obtained using||(Rocks • Flint • Gold Nugget • Nitre • Gems • Sand )|
||(Vine • Bamboo ) (Grass • Tuber (Blooming Tuber) )|
|Obtained by trading||Gold Nugget • Gems • (Dubloons ) (Oinc (Tenpiece Oinc) • Royal Gallery Key )|
|Obtained by other methods||(Obsidian • Tar )|