Friday, 30 August 2013
Thursday, 29 August 2013
There are over 680 documented species of the sac fungus genus Ophiocordyceps, and one of the best known of these is Ophiocordyceps sinensis, colloquially known as caterpillar fungus.
Year Price/kg (Yuan)
|Neighbouring China has a huge appetite for the fungus, pushing prices above $12,500 per pound (450 grams)|
|There has been a dramatic rises in Yarchagumba prices in both the national and international markets. In 2001, Dolpa harvesters sold the fungus for Rs 20-25 per piece but they received Rs 200-600 per piece in 2011, an increase of 900 to 2,300 per cent, according to the report. The annual production of Yarchagumba in the Himalayas and the Tibetan plateau is thought to be around 85-185 tonnes with a current total estimated global market value of $5-11 billion.|
Yarchagumba is under severe threat in its natural habitat due to excessive and premature harvesting to meet growing demand and price surges both in the local and global trade regimes, warns the study.
Friday, 23 August 2013
|Michael found the gem in an area of the park where the 15.33-carat Star of Arkansas diamond was found in 1956. His father was still renting mining equipment when he discovered the diamond.|
The diamond is about the size of a jellybean and is the 328th diamond found this year. It is the 27th largest diamond found by a park visitor since the site became a state park in 1972, according to Cox. More than 75,000 diamonds have been found at the site since the first discovery in 1906 by John Huddleston, the farmer who owned the land at the time.
Thursday, 22 August 2013
|Oak Island is approximately 140 acres in size and located just off the southeast coast of Nova Scotia. It is one of many small islands in the area and is now linked to the mainland via a narrow causeway.|
Saturday, 17 August 2013
|Found in 1967 at Vega de San Juan mine in Colombia, the Gachala Emerald is an uncut emerald crystal weighing 858 carats. It was donated to the Smithsonian Institution by New York jeweler Harry Winston.|
|The Olympic Australis Opal is the largest opal yet found. It was found in 1956 in the outback opal gemstone mining town of Coober Pedy in South Australia.|
It consists of 99% gem opal and weighs 17,000 carats (3450 grams).
|The Black Star of Queensland is a 733-carat (147 g) black sapphire, and the world's largest gem quality star sapphire. It was discovered in Australia in the 1930s.|
|Alexandrite is renowned for its color change from red under incandescent light, to green in daylight or fluorescent light. The Smithsonian museums' Alexandrite is a 65.08 carat square-cushion cut alexandrite from Sri Lanka and is the largest known.|