Trivia

Hard

Pearls Are Made From Layers Of A Compound Known As?

Opaline
Carbonite
Nacre
Mollusca

Answer: Nacre

Nacre, commonly known as “mother of pearl” is the iridescent layer found on the inner surface of some mollusc species. The composite compound is made from a combination of organic and inorganic material and, on a microscopic level, is composed of tiny little hexagonal platelets of aragonite (a form of calcium carbonate) locked in place by layers of elastic biopolymers (such as chitin, lustrin and silk-like proteins).

While the compound appears in several different mollusc groups, of most interest to us (and to the jewelry industry) are the pearl oyster and the freshwater pearl mussel; molluscs that not only produce the lining along the inside of their shell but also produce balls of the lining. Pearls are simply thousands upon thousands of layers of nacre produced and layered away from the inner surface of the shell.

Trivia

Easy

A Denier Is A Unit Of Measurement Used In?

Trivia

Easy

The Largest Sea Plane Ever Built Was The?

Trivia

Hard

The Addams Family Franchise Started Off As A?

Trivia

Very Hard

What Is Responsible For That Distinct Post-Rainfall Smell?

Trivia

Hard

With The Y2K Problem Behind Us, We Now Need To Worry About What?

Trivia

Hard

Which Component of Modern Cars Owes Its Name To Horses?

Trivia

Very Hard

The First Steam Engine Was Known As What?

Trivia

Very Hard

Which Of These Bird Species Spends More Time Aloft Than Any Other?

Trivia

Hard

The First Game Console To Feature A Built-In Hard Drive Was The?

Trivia

Easy

Atomic Time Is Kept Using Atoms Of What Type?