Diamonds are Forever - or perhaps not. Every week we provide a brief preview of the Financial Mail's cover story. The week the dramatic advent of lab-grown diamonds on the diamond market, its effects and consequences.

How do sport and money mix? Like oil and water. It's such a difficult balance to get right; sports can generate enormous turnover and need the cash to support development and pay the players. But if you go too far, you lose sight of the public and the ethic. So its turning out for Fifa, despite a fabulous world cup. Talk about an own goal! Merchant banker Mark Barnes and journalist Tim Cohen discuss this issue, and its much less benign distant cousin, war. Is any consideration being given to the possibility that the conflict between Iran and the US will go on for years, as the conflict between Ukraine and Russia have? And what’s behind it all? Listen UP!

Since the Public Investment Corporation, the nominal investor of over R3-trillion in retirement savings of the entire civil service, now has no board or permanent CEO, not to mention a broadly poor investment record, would this not be a great time to do away with it entirely and hand the mandate to the professionals? Merchant banker Mark Barnes and journalist Tim Cohen discuss this issue with SPECIAL GUEST and free market proponent Leon Louw, and you might think the answer is obvious given the panel’s pro-business makeup. But it is not. PLUS glass half full journalism.

This weekend has seen a feast of sporting events, and your hosts, merchant banker Mark Barnes and journalist Tim Cohen dissect the soccer, the tennis, and the rugby ... deciding who should have won and who should not. Juuuuust kidding. We talk about how decision making at the peak of sporting events can be hobbled by too much mind. And there is that other sport, the Public Investment Corporation and its seeming inability to function properly. Also, Johannesburg.

If you had to isolate the three biggest problems faced by South Africa right now, the quantity and variety of options would be numerous. Poverty, inequality and unemployment, are the typical trio mentioned. Merchant banker Mark Barnes, journalist Tim Cohen and SPECIAL GUEST Rob Rose make a case for an alternative trio; political parties unable or unwilling to choose the most qualified people; government over interventionism where it's unnecessary and under interventionism where it is necessary. Do you agree, or not? Also, the future of Currency!

The Durban July, Opera at La Scala, and the Soccer World Cup: we are festooned with festivities, and we discuss them! Merchant banker Mark Barnes and journalist Tim Cohen are joined by arts writer and enthusiast extraordinaire Sarah Buitendach to talk about some of the amazing events of our time, and artists in general. Also, if it's OK for presidents to second-guess referees, where were you when you were needed Mr Ramaphosa?

ListenUp: Xenophobia in SA

The terrible prospect of xenophobic violence is once again afflicting South Africa this week, dragging Mzanzi into the fraught global political issue of immigration. Having the national soccer side booed in the US by other African nations at the World Cup is deeply sad, but then again, so is struggling to find your job back home. Merchant banker Mark Barnes and journalist Tim Cohen wrestle with the issue, offering some ideas on a subject that has many aspects and few obvious solutions. A little soul searching might help. Also, traveling thousands of kilometers through Southern Africa - the reason Mark has been AWOL for the past month - what do you see, what do you learn, and what does it feel like to get back home.

Is investing in art actually an investment, or just a pleasure posing as a share portfolio? Merchant banker and artist Mark Barnes discussed this, the art scene, and whether Picasso’s work will eventually become valuable with journalist and art critic Tim Cohen. SPECIAL GUEST, executive director of auctioneers Strauss and Co. SUSIE GOODMAN joins in order to add some actual knowledge to the discussion. Turns out, African art and artists are coming into their own, and selling for high prices around the world. Also, the Johannesburg Art Gallery cadenza.