Following is a transcript of the video. Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy.

Regardless of luckiness, the mineraloid gemstone — whether it be of the black, white ... and differences and pros and cons of synthetic versus natural opals. What's the difference between ...

oil men accepted it as a fact, that Chemist Audibert of Paris had succeeded in making synthetic petroleum ... and the usual by-products of that “black gold” which nature only makes after ...

The shinier the pearl, the better. Black opal is one of the rarest gemstones in the world, sought after for its seemingly infinite display of colors, compared to common opal, which is usually one ...

(Supplied: Liz Smith) In the meantime, Bob was experimenting with macrophotography, capturing the opals and fossils that miners brought to them. "Black opal is the most amazing gemstone on the ...

Yet despite appearances there is a siren’s call here. The world covets opal but the most revered is black opal – a ...

A synthetic option recreates the payoff and risk profile of a particular option using combinations of the underlying instrument and different options. Options can limit a trader's total investment ...

Please verify your email address. This item is classified as Ore and can usually be found mining in caverns or rock throughout Hyrule in Zelda: Tears of the Kingdom. Ore items often boast a high ...

Opal is not a common name ... I never could have dreamed that the first South Asian and Black vice president would be hosting Diwali at her home—a holiday I never wanted to celebrate growing ...

Risk Disclosure: Trading in financial instruments and/or cryptocurrencies involves high risks including the risk of losing some, or all, of your investment amount, and may not be suitable for all ...

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...

Following is a transcript of the video. Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy.