Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth.
The De Beers Diamond Consortium is an international corporation that specializes in diamond mining, diamond exploitation, diamond retail, diamond trading and industrial diamond manufacturing sectors. The company is active in open-pit, large-scale alluvial and coastal mining. It operates in 35 countries and mining takes place in Botswana, Namibia, South Africa, Canada and Australia.
The Diamond Trading Company (DTC) is the rough diamond sales and distribution arm of the De Beers Family of Companies. The DTC sorts, values and sells about 35% of the world’s rough diamonds by value. The DTC has a combination of wholly owned and joint venture operations in South Africa (DTCSA), Botswana (DTCB), Namibia (NDTC) and the United Kingdom (DTC).
Diamonds were largely inaccessible to investors until the recent advent of regulated commodities, due to a lack of price discovery and transparency. The characteristics of individual diamonds, especially the carat weight, color and clarity, have significant impact on values, but transactions were always private. With the standardized commodity as an underlying asset, several market traded financial instruments have been announced.
Chow Tai Fook group is a Hong Kong–based, privately-owned conglomerate with holdings in the jewellery, property development, hotel, department store, transportation, energy, telecommunications, port, casino, and other businesses. Despite the holding companies of the group, namely Chow Tai Fook Capital Limited, Chow Tai Fook (Holding) Limited, Chow Tai Fook Enterprises Limited, etc. being privately owned, the group has been partially listed on the stock market via associate company New World Development and subsidiary Chow Tai Fook Jewellery Group Limited. As of 31 December 2018, New World Development was ranked as the 47th-largest company by market capitalization on the Stock Exchange of Hong Kong, which was HK$105.68061 billion.
Lazare Kaplan International Inc. (LKI) is a diamond manufacturing and distribution company based in New York City. The Chairman of the Board of Directors is Maurice Tempelsman. The first LKI was located in Ponce, Puerto Rico, at el Barrio de los Diamantes, a community named after the factory was located there. LKI was founded in 1903 where it operated until it was moved to Caguas, Puerto Rico in the 1970s.
Gabriel S. "Gabi" Tolkowsky known for cutting the famous Centenary Diamond, is one of the world's most renowned diamond cutters. The great nephew of Marcel Tolkowsky, father of the modern round brilliant diamond cut, he is the sixth generation in his family to become well-known in the diamond cutting trade.
Petra Diamonds Ltd is a diamond mining group headquartered in Jersey. Petra own one of the world's most productive mines historically, the Cullinan Diamond Mine is famed for having produced the world's largest rough and polished diamond. The company is listed on the London Stock Exchange.
The Namibia Diamond Trading Company (NDTC) is a 50/50 joint venture between the Republic of Namibia and the DTC; the mining and sorting arm of De Beers. Namibia is a known source for gem quality diamonds and is the fourth-largest exporter of nonfuel minerals in Africa. In terms of scale, impact and economic importance, diamond mining is the most prominent industrial activity in Namibia.
Israel Diamond Exchange Ltd., located in the Tel Aviv District city of Ramat Gan, Israel, is the world's largest diamond exchange and the centre of Israel's diamond industry. The exchange is a private company that incorporates about 3100 members; these diamantaires are engaged in diamond cutting and trading - marketing, brokerage, import and export.
PC Jeweller Limited is a jeweller based in New Delhi, India. It started operations in April 2005 with one showroom at Karol Bagh Delhi and 80 showrooms in India. It is a first generation business promoted by two brothers- Padam Chand Gupta and Balram Garg. It presently has 80 stores in 66 cities across 17 States/UT.
TanzaniteOne is a gemstone mining company which exclusively mines the blue gemstone, tanzanite. TanzaniteOne Mining Ltd is located in Block C, Merelani, Tanzania. Merelani is the world's only known source of tanzanite.
Luk Fook Holdings (International) Limited principally engages in the sourcing, designing, wholesaling, trademark licensing and retailing of a variety of gold and platinum jewellery and gem-set jewellery. They were listed on the Main Board of The Stock Exchange of Hong Kong Limited in May 1997, and the Group has tapped into the mid to high-end watch market in recent years.
Hari Krishna Exports Pvt. Ltd., also known as HK, is an Indian diamond conglomerate, headquartered in The Capital, Bandra Kurla Complex, Mumbai, India. It was established in 1992 by Savji Dholakia and his three brothers. The company has manufacturing units at Surat in Gujarat and its marketing and sales office in Mumbai.
Dharmanandan Diamonds is an Indian diamond manufacturing company headquartered in Mumbai, Maharashtra, India and has manufacturing facility in Surat, Gujarat, India, that manufactures diamonds and jewelry.
Laljibhai Patel is an Indian diamantaire and philanthropic social activist, who is the chairman of Dharmanandan Diamonds Pvt. Ltd. (DDPL) and one of the barons of the Indian diamond Industry. He has been guiding Dharmanandan Diamonds Group of Companies for over four and a half decades now and has grown the very company to emerge as one of the largest and globally renowned diamond manufacturers.
Rosy Blue is an Indian-Belgian company that has interests in media, real estate, financial services and retail. The company also trades in rough diamonds, manufactures and distributes polished diamonds and jewellery.
Arunkumar Ramniklal Mehta was an Indian businessman, and head of the family-owned Belgian/Indian conglomerate Rosy Blue.
Vasant Gajera, born on 25 May 1954, is an Indian businessman and philanthropist. He is the founder of Laxmi Diamond Group, a diamond manufacturing and exporting company.
