George IV's Blue diamond

Article Abstract:

There is evidence to indicate that the 45.5 carat Hope Diamond was cut from the 67.125-carat French Blue Diamond, which disappeared from France in 1792. Evidence also indicates that the 45.5-carat diamond was in the possession of George IV in 1823, before it was acquired by Henry Philip Hope.

History, Biography, Diamonds, George IV, King of England

---

Crystals are habit forming

Article Abstract:

An accurate method of identifying crystals is knowledge of the habit of a crystal or the three dimensional configuration of a crystal. Habits are affected by concentration, temperature pressure, pH and composition of the solution. Different sites induce different habits.

Identification and classification, Crystals

---

All that glitters isn't goethite: what's inside strawberry quartz?

Article Abstract:

The red, hairlike intrusions inside strawberry quartz is most probably hematite. The use of the Raman spectroscope on samples from Kazakhstan, revealed that the inclusions were hematite. Microscopic samples of hematite are red in color.

Usage, Raman spectroscopy, Quartz, Inclusions

Similar abstracts:

• Abstracts: Counterfeit stamps that helped win the war. Foolproof idea didn't fool inspectors. Pioneer airmail item recognized in shirt shop
• Abstracts: Picture perfect. All the bells and whistles
• Abstracts: Are unusual tools of the trade the secret behind these eerie images? Grand illusions
• Abstracts: Let us remember. President's house marks 120th anniversary. Super Sunday
• Abstracts: Pickett stamp wasn't the first design "boo-boo." (factual mistakes in postage stamp design)(Speaking of Stamps, Etc.)(Column)

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.