Tanzanite: One of the Rarest Gemstones in the World

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What You'll Learn in this Video:

What are tanzanite gemstones?
What is the rarest gemstone in the world?
What are the world's rarest gems?
Where is tanzanite mined?
Can you wear tanzanite in an engagement ring?
How to clean tanzanite jewellery
Are tanzanites heat treated?
What is zoisite?
How soft is tanzanite?
Are tanzanites pleochroic?
What is pleochroism?
Which colours are tanzanites available in?
Which tanzanites are the most valuable and expensive?
What is the birthstone for December?
Tanzanite vs. blue sapphire
Where was tazanite discovered?
Who discovered tanzanite?
When was tanzanite discovered?
History of Tiffany & Co. and tanzanite gemstones
How soft is tanzanite?
Are pastel tanzanites valuable?

Chapters:
0:00 Introduction
0:21 Pleochroism
1:24 One-of-a-kind colour
1:48 Tanzanite vs. blue sapphire
2:10 Pastel tanzanite
2:42 Rarity and history
3:44 Tiffany & Co.
4:13 Heat treatment
4:39 Variety of zoisite
4:55 Low hardness

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