Why pearls, black opal, and chocolate diamonds are so expensive

Pearls, black opal, and Chocolate Diamonds are highly sought-after gems. Although demand is part of what drives up their cost, there are many other factors that determine their value, including colors and sizes. Timecodes 00:00 Why pearls are so expensive 00:00 Why Chocolate Diamonds are so expensive 00:00 Why black opal is so expensive Original videos linked here: Why Pearls Are So Expensive https://youtu.be/O0ihGlsLL1Y Why Chocolate Diamonds Are So Expensive https://youtu.be/OtyD9EXB2pA Why Black Opal Is So Expensive https://youtu.be/RA9wxEbnhVU