What is "quintessences"

Usage examples of "quintessences".

Extracts, elixirs, spirits, oils, essences, quintessences, florescences, salts, concentrates, and distillations filled a glittery collection of vials and charming ornate bottles fitted in two custom-designed carrying cases, each as large as a Samsonite two-suiter, and both bags now stood bursting with potential in this rank, mildew-riddled bathroom.

Or the long, thin upholsterer’s hammer, a gavel for opening a brief judgment day, an auction of quintessences to be held among the Elfs of Avalon.