For those of you who've asked for a gemstone video, here it (finally) is! In this video, I go over what gemstones are, the variety of ways in which gemstones can form, and then focus on 12 specific gemstone examples-- diamond, ruby, sapphire, tourmaline, emerald, aquamarine, garnet, peridot, topaz, lapis lazuli, & turquoise-- to discuss how each of these gems form, how they get there beautiful colors and optical properties, & more! I have a follow-up video coming out soon to discuss sedimentary & additional hydrothermal gemstones, including opal, amythst, citrine, pearl, moonstone, onyx, coral, & amber, so check it out here: [ Ссылка ] (it is currently posted as a member-only video, but will be available to everyone very soon!)
GEO GIRL Website: [ Ссылка ] (visit my website to see all my courses, shop merch, learn more about me, & donate to support the channel if you'd like!)
References:
Shigley, 2009 (Diamond, Natural)- [ Ссылка ]
Read & Janse, 2009 (Diamonds: Exploration, mines and marketing)- [ Ссылка ]
Hurlbut & Kammerling, 1991 (Gemology)- [ Ссылка ]
van Hinsberg et al., 2011 (Tourmaline: an ideal indicator of its host environment)- [ Ссылка ]
Groat, 2008 (Geology of gem deposits)- [ Ссылка ]
Earth Materials: Introduction to Mineralogy and Petrology textbook: [ Ссылка ]
Spear, 1993 (Metamorphic phase equilibria and pressure-temperature-time paths) [ Ссылка ]
Bucher & Grapes, 2011 (Petrogenesis of Metamorphic Rocks)- [ Ссылка ]
Schumann, 2017 (Gemstones of the World: Newly Revised & Expanded Fourth Edition)- [ Ссылка ]
Harlow & Sorensen, 2001 (Jade: Occurrence and metasomatic origin)- [ Ссылка ]
Weigand et al., 1977 (Turquoise sources & source analysis)- [ Ссылка ]
0:00 What are Gemstones?
1:36 How do Gemstones Form?
3:19 List of Gemstones
4:08 How Diamonds Form
7:45 Diamond Colors
9:51 How Ruby & Sapphire Form
12:00 How Tourmaline Forms
12:40 Pegmatite Tourmaline
15:14 Tourmaline Colors
15:45 How Emerald & Aquamarine Form
17:43 How Garnet Forms
20:05 Garnet Varieties (Colors)
21:02 How Peridot Forms
23:08 How Jade Forms
25:27 How Topaz Forms
26:03 How Lapis Lazuli Forms
27:38 How Turquoise Forms
Hey there, Earth enthusiast! Check my favorite Earth-friendly products:
Bamboo toilet paper: [ Ссылка ]
Bamboo paper towels: [ Ссылка ]
Compostable tableware: [ Ссылка ]
Compostable trash bags: [ Ссылка ]
Bamboo cutlery + straw! : [ Ссылка ]
Eco-Friendly Tote (great for grocery shopping!): [ Ссылка ]
Reusable straws + cleaning brushes (my fav!): [ Ссылка ]
Eco-friendly laundry detergent: [ Ссылка ]
Directly offset your carbon footprint with Wren: [ Ссылка ]
(Just click link, press get started, take the free C footprint quiz, then choose how much you want to reduce your footprint by donating to the C sequestration projects they're funding!)
Non-textbook books I recommend:
Oxygen by D. Canfield: [ Ссылка ]
Brief history of Earth by A. Knoll: [ Ссылка ]
Life on young planet by A. Knoll: [ Ссылка ]
Some assembly required by N. Shubin: [ Ссылка ]
Your inner fish by N. Shubin: [ Ссылка ]
Oxygen by N. Lane: [ Ссылка ]
Alien Oceans by K. Hand: [ Ссылка ]
Life's Engines: [ Ссылка ]
Tools I use as a geologist/teacher/student:
Geology field notebook: [ Ссылка ]
Geology rock hammer: [ Ссылка ]
Geological compass: [ Ссылка ]
Geological hand lens: [ Ссылка ]
Camera: [ Ссылка ]
Carbon-neutral pencil bag: [ Ссылка ]
Carbon-neutral backpack: [ Ссылка ]
Disclaimer: Links included in this description might be affiliate links. If you purchase a product or service with the links that I provide I may receive a small commission, but there is no additional charge to you! Thank you for supporting my channel so I can continue to provide you with free content each week! And as always, let me know your topic suggestions in the comments down below!
