Identifying Glass is not consumed on Identify. I have a couple in act 2 that have a white hand icon on them. Loremaster is an civil ability in Divinity Original Sin 2. To examine a monster or NPC, right click them and choose Examine. To identify, use an identifying glass and click on the item you want to identify, or simply right click on item and choose Identify.
The higher, the more you can identify and the faster it goes. Loremaster identifiles enemies and allows you to identify items.