This episode is brought to you by Fully gemstones.

We are a research institution. We study where gems come from. We study how we can use them to solve to cure diseases, to solve environmental problems.

And it is gemstones that can do this. They are very stable materials.

And if you can figure out ways of using them

to address social and economic problems,

then that's great.

That's what we're doing.

The one that we probably are always looking for in the world is a Ruby.

And I had a wonderful family from New York that donated through my committee

130-karrant Mozambique ruby to the Smithsonian. The stone is beautiful but it had been heated. So we've

never seen a gemstone of a hundred-carried of rubies. And rubies have been identified for thousands

of years, so we know it's there. So that's the only one we probably haven't seen. I'm Carol Houlton,

the voice of jewelry. Welcome to if jewels could talk. I'm an author and broadcaster, and the woman

who initiated the role of jewelry editor at magazines like

Tatler and Vogue. This is a podcast for everyone, for people who do like jewelry, for people

who don't realize they like jewelry, and anyone intrigued by fascinating facts, new ideas, and forgotten

histories. So join me as I tell sparkly tales and meet all sorts of people, delving into four

centuries of jewellery culture and investigate what's happening now.

I've come over to LA.

I'm sitting here with Dr. Aaron Celestian, the curator of the German Mineral Hall at the Natural History Museum of Los Angeles County. And we are sitting in his vault

surrounded by gemstones. We're here because last night, a new exhibition,

100-carat icons of the gem world opened last night at a very dazzling event in Los Angeles,

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