Business Daily

Synthetic or natural? Diamond ring hunters may soon be asking themselves this question, as technological advances mean the gemstone market could be poised for a flood of man-made stones. Presenter Justin Rowlatt visits the new research headquarters of Element Six, the synthetics arm of mining giant de Beers, to find out how they are made and their proliferating industrial uses. He hears from diamonds journalist Chaim Even Zohar about the factory-made diamonds fraudulently passed of as natural gems. Author Matthew Hart retells the yarn of how a lowly small-time prospector first broke the de Beers cartel. And we hear from de Beers itself - their marketing head Stephen Lussier explains why diamonds really are forever.

We take a second look at carbon, one of the most versatile of all the elements, in the latest episode of our series looking at the economy of the elements of the periodic table. We all now know that carbon-based fossil fuels are driving global warming, threatening to disrupt all our lives, but could carbon come riding to the rescue? Our favourite chemist, Andrea Sella of University College London, takes us through the basic chemistry of carbon and we visit some of the world's leading materials scientists in two leading carbon research centres. At Manchester University we meet professor Aravind Vijayaraghavan, an expert in the revolutionary nano-material, graphene and two of his colleagues. We also get a tour of the National Composities Centre with its chief executive Peter Chivers. And, we meet Colin Sirett, head of research at the European aerospace group Airbus.

In our series examining the world economy from the perspective of the chemical elements, we look at how the industrial revolution was really an energy revolution driven by carbon-based fossil fuels. Chemistry professor Andrea Sella of University College London and his geology colleague professor Mark Maslin explain the chemical wizardry that makes carbon the ultimate fuel. We hear from Dr Paul Warde an industrial historian at the University of East Anglia, about how the 'C' element has powered the longest and most sustained economic boom in the history of humanity. But how long can it last? Can we expect the mother of all crashes when the carbon crunch finally comes? Two former oil men, Chris Mottershead, former head of energy security at BP and now vice principal for research at King's College in London and John Hofmeister, former president of Shell Oil, give us their perspectives on the whether the world is ready to tackle its addiction to fossil fuels, before the fuel runs out and in time to avert a loomin

What makes gold so valuable, why is it golden and why is it the only elelment that makes a good currency? In chemical terms it is virtually useless. Justin Rowlatt talks to one of the world's biggest manufacturers of mobile phones about how you can recover the gold in your handset and learns how little gold there actually is. Find out more in the latest in our series examining the world economy from the perspective of the building blocks of the universe - the chemical elements.

Mercury is the bad-boy of the periodic table, often called 'quicksilver', it is both mesmerising and toxic as Professor Andrea Sella of University College London vividly explains. In the fourth of our series examining the global economics of chemical elements Justin Rowlatt speaks to Tim Kasten of the United Nations' Environment Programme who is one of the architects of a new international treaty that aims to ban the metal from industrial uses by 2020. As we discover, that ban will affect everything from coal-fired power stations to small-scale gold miners in developing countries, to the illumination of the lowly office. We visit a fluorescent bulb recycling plant outisde Norwich and speak to small scale gold miners in Ghana about how the ban might affect them. But it is all in a good cause, as Justin discovers when he visits one of the finest fishmongers in London.

We look at aluminium, a more dazzling metal than you may imagine. A sceptical Justin Rowlatt visits the lab of our perennial chemist, Andrea Sella, to find out why it is used in everything from drinks cans to packaging to insulation to window frames.This metal used to be incredibly rare, because it is so hard to extract from its ore, bauxite. We visit Britain's only aluminium smelter - in the Scottish Highlands - to find out why so much electricity is needed in the process.But once you have it, it can be used, recycled and re-used almost ad infinitum. As the stock of metal in circulation increases every year, we ask the world's biggest manufacturer of rolled aluminium sheets whether one day the world may not need to mine the metal at all any more. And, as if that were not enough, we dispatch Justin to tour the world's biggest aluminium car body shop to find out why vehicle manufacturers are dropping the use of steel in favour of its lighter rival.(Photo: Aluminium bodied Range Rovers in production at the Jagu

Helium is the second most abundant element in the universe but very rare on earth. Professor Andrea Sella of University College London, explains to Justin Rowlatt the properties that make this inert gas so useful. He explains where it comes from and where it goes to.Washington correspondent, Jonny Dymond, is out in the wilds of the Texas pan-handle to explore the US national helium reserve. And, we hear from the head of General Electric's Magnetic Resonance Imaging division - one of the world's biggest users of helium - on why the gas is so important in the fight against many diseases.

In the first of Elementary Business - a new series of programmes about the chemical elements - Justin Rowlatt asks whether phosphorus poses the biggest looming crisis that you have never heard of. Since 1945, the world's population has tripled. Yet the fact that we've still managed to feed all those mouths is in no small part thanks to phosphates. We mine them, turn them into fertiliser, and then spread them onto our fields, whence they are ultimately washed away into the ocean. Justin speaks to chemist Andrea Sella to find out just why phosphorus is so vital to sustaining life, and modern agriculture. He also hears from Jeremy Grantham, a voice from the world of high finance, who warns that pretty soon Morocco may find itself with the dubious honour of a near-monopoly of the world's remaining phosphate supplies. And Justin travels to the lowly town of Slough, near London, to take a look at one new way of staving off the dreaded day when the world eventually runs out of the stuff.(Photo: The Thames Valley sew