New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Gemstones Week of 3/2

by: Caroline Bacevice

Gemstones Week of 3/2 1108

Marketplace > Ohio State University > Earth Sciences > 1108 > Gemstones Week of 3 2
Caroline Bacevice
GPA 3.608
Loren Babcock

Almost Ready


These notes were just uploaded, and will be ready to view shortly.

Purchase these notes here, or revisit this page.

Either way, we'll remind you when they're ready :)

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Loren Babcock
Class Notes
25 ?




Popular in Gemstones

Popular in Earth Sciences

This 3 page Class Notes was uploaded by Caroline Bacevice on Friday March 6, 2015. The Class Notes belongs to 1108 at Ohio State University taught by Loren Babcock in Spring2015. Since its upload, it has received 46 views. For similar materials see Gemstones in Earth Sciences at Ohio State University.

Similar to 1108 at OSU

Popular in Earth Sciences


Reviews for Gemstones Week of 3/2


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 03/06/15
Gemstones Week of 32 Test examples What is a gem 0 Material that is sufficiently attractive and durable to be used for personal adornment o Desirable for its beauty the key attribute of a gem o Other common attributes include durability rarity fashion and portability o Often cut and polished o enhance its beauty 0 May be naturally occurring or synthesized in a lab History of the Hope DiamondContinued 1792 French Revolution erupted during the reign of Louis XVI and Queen MarieAntoinette o The royal treasury and the Crown Iewels were looted between September 11 and September 17 1792 French Blue disappeared for 20 years By French Law the statue of limitations on wartime crimes was 20 years On September 19 1812 20 years and 2 days after the theft of the French Crown Iewels a London jeweler documented a 455 carat blue diamond in England in the possession of Daniel Eliason a London diamond merchant 0 Memo established Eliason as the new legal owner 0 The diamond was apparently cut from French Blue About 1820 King George IV of England purchased the diamond After George IV s death in 1830 Lord Henry Philip Hope a London banker bought the diamond 0 Hope had the diamond mounted in a medallion Passed through Hope family until 1901 1910 Hope Diamond sold to CH Rosenau then Pierre Cartier Cartier reset the diamond and sold it to Evalyn Walsh McLean for 180000 0 Cartier told McLean that the diamond brought bad luck to anyone who wore it o Apparent origin of the supposed curse it was a sales pitch McLean thought bad luckquot objects brought her good luck McLean added to the legend of the Hope Diamond 0 Wore it frequently allowed others to wear it o Pawned it several times to raise money 1949 two years after McLean s death 0 Harry Winston NY jeweler purchased McLean s jewelry collection I The diamond traveled in an exhibit 1958 Hope Diamond was removed from its setting culet was recut slightly November 1958 Winston donated the Hope Diamond to the Smithsonian Institution USNM as the foundation for a National Gem Collection What causes color in minerals Corundum and beryl important colored gems How do we perceive color Color perceived depends on the light under which an object is viewed 0 Different types of light different color perceptions eg incandescent light vs uorescent light vs ultraviolet light Visible Spectrum ROYGBIV o For gems no indigo Why do gems appear to have colors 0 Colors are perceived when something absorbs some wavelengths from the visible spectrum 0 If atoms in a gem absorb all red light only greenblue light will be transmitted to the eye stone will appear greenblue 0 Black all colors absorbed 0 White or colorless No light is absorbed Causes of colors in Minerals Origin of color can be 0 Chemical 0 Physical 0 Optical Colors Created Chemically Body color color resulting from internal chemical composition Idiochromatic gems SelfColoredquot due to colorcausing elements that are part of the chemical composition 0 Ex Rhodolite garnet Allochromatic gems Other coloredquot due to impurities Fe Mn Cu Ni Co Ti V Cr etc 0 Ex Corundum I lt1 Cr changes a colorless stone to a ruby Oxidation state also affects color 0 In beryl I Fe2 yields blue beryl aquamarine I Fe3 Yellow beryl heliodor I Mn2 Pink Beryl morganite I Mn3 Red beryl bixbite o In allochromatic gems the color can be changed if the oxidation state haschanged I Yellow beryl can be heated in a low oxygen environment reducing ferric iron Fe3 to ferrous iron Fe2 and producing blue beryl


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.