Earring
イヤリング [earring] in Japanese. Note that since Japanese doesn't separate between singular and plural clearly, an equally valid way to interpret this is 'earrings', and looking at the illustrations of some of the applicable equipment, it becomes clear that this is often indeed what is meant.
Final Fantasy VI
Stats: MATK +25% single / MATK +87% pair
Equip: all
Obtain: ?
Description: Earring that boosts the strength of the wearer’s magic. Effect increases when worn in pairs
Final Fantasy VII

Stats: MAG +10
Buy: 7,500 gil (Sell: ? gil)
Shop: Rocket Town
Other: as 'Earrings'
Record Keeper

Earrings (VII)
Stats: MAG +8, Max Level: 1
Type: Accessory, Rarity: ★★
Category: Equipment