Exam (elaborations)
GIA Colored Gemstones - Synthetic Gemstone Processes(questions and answers).
- Course
- Institution
GIA Colored Gemstones - Synthetic Gemstone Processes(questions and answers).
[Show more]
Content preview
GIA ColoredGemstones - Synthetic
Gemstone
Processes(questions
and answers)
Solution process - answer A growth method in
which the synthetic crystal grows from a dissolved
chemical mixture, sometimes at high temperature
and pressure.
- 2 most common: flux growth and hydrothermal
growth
- high cost, low volume
(Colored Stones: Assignment 5)
Flux Growth - answer A process in which nutrients
dissolve in heated chemicals, then cool to form
synthetic crystals.
- flux is a material that, when melted, dissolves
other materials
- requires metal crucible, preferably platinum
, - can take up to a year for crystal growth
- late 1930's - Chatham began marketing flux-
grown synthetic emerald
- usually begins with a seed crystal, or could result
from spontaneous nucleation
(Colored Stones: Assignment 5)
Hydrothermal growth - answer A process in which
nutrients dissolve in a water solution at high
temperature and pressure, then cool to form
synthetic crystals.
- method uses an autoclave filled with crushed
chemical compounds
- only method used to produce synthetic quartz***
- hydrothermal quartz appeared in 1890's
- hydrothermal emerald appeared in 1960
(Colored Stones: Assignment 5)
Melt process - answer A synthetic-crystal growth
method in which the chemical mixture is melted,
then recrystallized.
- 2 most common: flame fusion and pulling
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller GUARANTEEDSUCCESS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now