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How Do Gems Form?: Crash Course Geology #7

For most of human history, one thing has been true – we LOVE shiny things. Gems are the crown jewels (pun intended) of geology, and for thousands of years, we’ve wanted to know all about them. In tod

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@Davlavi From YouTube ↗ 8 Jul 2026 1
Amazing openning.
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Sage...I really enjoy your style! You make these videos really special. I'd love for you guys to do a video on agates. I collect agates and use them as subjects for macro photography. I also use other stones (jaspers, obsidians, rhyolites & others).
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0:57 Steven Universe reference in the big 26?👀💎
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@GEF6560 From YouTube ↗ 22 Jun 2026 2
That shirt, is a gem. 😊
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I just binge watched all 7 episodes, now excited for episode 8. Thanks Sage, you, rock.
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Yay, gemmology 101, intro to the world of gemstones. I'm a certified gemmologist, and kudos to you for an great introductory video on the vast world of gemstones. Shine on, CrashCourse team! 💎✨✨✨
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I'm a sucker for Cultured pearls myself
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Oh, I get it, Dwayne the Rock....
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@khgrl3693 From YouTube ↗ 22 Jun 2026 10
One day I'm going to get a watermelon tourmaline. And it will be going in my mouth. Forbidden jolly rancher (do not do this)
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And Steven! 1:00
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Another fantastic video!💐🥳🪨🤘
Happy pride month y'all!💜🤍🩶🖤
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@124idatw From YouTube ↗ 22 Jun 2026 15
seated for this steven universe crystal gems origin story
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@Relcoz From YouTube ↗ 22 Jun 2026 9
Love the character arc that Dwayne went through this episode. So inspiring!
Gems are so cool. I love the connection between ruby and sapphire being the same gem with different corrupting elements
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@yucol5661 From YouTube ↗ 22 Jun 2026 11
Sage is in crash course!? 🤩
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This episode sure does sparkle.
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Have to say this. I love the colors of your cloth here. So vibrant. Awesome.
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@shadebug From YouTube ↗ 22 Jun 2026 19
I was very disappointed with my friends when we accompanied one of them to buy an engagement ring and I was the only one who thought a synthetic diamond was better. It is better in every way that you can look at and is ridiculously cheaper, not to mention the process that created it being really cool.

Who wouldn’t want that?
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OMG I LITERALLY JUST SEARCHED "Crash course geology " AS A SHOT IN THE DARK, WAITING FOR A DISSAPOINTMENT, but here you are!!! Soo happyyy😭😭😭
Thank you for making this series🙏🏼
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I feel too early
I’m used to crash course videos, being seven years old
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sage, i think you are a gem