Water Opal

Front

What is an opal?

Back

A type of gemstone that is formed from silica and water, known for its colorful play of light.

Front

How big can opal be?

Back

A few centimetres to a few metres.

Front

Is raw opal real?

Back

Yes, raw opal is a natural form of the gemstone.

Front

Do people collect opal?

Back

Yes, many people collect opal for its beauty and rarity.

Front

What is the most expensive opal ever sold?

Back

3,600,000 dollars.

Front

What is the correct spelling of the gemstone?

Back

Opal.

Front

What colors can opal display?

Back

Opal can display a variety of colors, including blue, green, red, and yellow.

Front

Where is opal commonly found?

Back

Opal is commonly found in Australia, Mexico, and the United States.

Front

What is the play of color in opal?

Back

The phenomenon where opal shows different colors when viewed from different angles.

Front

What is the hardness of opal on the Mohs scale?

Back

Opal has a hardness of 5.5 to 6.5 on the Mohs scale.