Wind Shard

Crystal.

From 27 Bait and Swat and 13 more quests.

From quests

27 Bait and SwatReward, ×17
2 A Good Adventurer Is Hard to FindReward, ×10
6 Preserving the PastReward, ×5
13 Sylphic GratitudeReward, ×5
14 Quarrels with SquirrelsReward, ×11
18 A Hard Nut to CrackReward, ×11
30 Death to the Bean ThievesReward, ×15
32 Eggs over QueasyReward, ×13
35 Hematophagic HarassmentReward, ×15
37 The Kindness of StrangersReward, ×17
39 Parasite CleaveReward, ×15
40 Soil DespoilersReward, ×17
12 The Wealth of NationsReward, ×9
30 The Slaying of the ShrewsReward, ×13

A tiny crystalline manifestation of aetheric wind energy.

Other databases

Eorzea Database (the official one, on The Lodestone)
Console Games Wiki
Garland Tools (vendors, crafting, drops)