Alluvial diamonds are those found under water having been washed away from the volcanic pipe where they erupted from the earth's mantle by flowing water.
You can find alluvial diamonds in riverbeds or in the sea.
In the 1700s, Lavoisier proved that diamonds are carbon only, by burning one and analysing the gas to show that it was CO2. Therefore the diamond was carbon. Yellow diamonds have a contamination of...
The phrase "diamond accents" in the description of a piece of jewelery generally refers to small diamonds. Often they're so small you'd need a magnifying glass to tell that they actually are there.
There is a famous diamond, described below, that was known as 'The Austrian Diamond' at one time. This diamond was a fancy yellow stone, originally dealt into European Royalty by the same French...