gem stones

»   Most gemstones contain several elements. Except the diamond – it's all carbon.

»   Most landfilled trash retains its original weight, volume, and form for 40 years.

»   Most plant pollen is highly inflammable. It will ignite and explode when placed on an extremely hot surface. In the early days of modern theater, artificial lightning was produced by throwing pollen grains of the club moss onto a hot shovel.

»   The highest ordinary type cloud is the cirrus, which occurs at an average altitude of 27,000 feet.

»   The highest rating given a top quality diamond is D-flawless.

»   The highest temperature ever recorded on Earth was 136º Fahrenheit on September 13, 1992, in Azizia, Libya.

»   Most precious gems are actually colorless. Their color comes form impurities in the stone than act as pigmenting agents.

»   The highest tides in the world are in the Bay of Fundy in southeastern Canada. Tides have reached 70 feet at the head of this bay.