Vladimir Pilyushin: The jewelry market is not stand-alone and moves by the same laws as other markets

Vladimir Pilyushin is editor-in-chief of Russian Jeweler, a leading magazine about the jewelry industry in Russia. He told Rough&Polished about his view on the evolution of the jewelry industry in Russia and touched upon some of its problems.

16 september 2024

Sarine’s David Block: Diamond Industry at Standstill Until Chinese Demand Returns

David Block is CEO of Israel’s Sarine Technologies and has served in the position since 2012. In this exclusive interview for Rough and Polished, Block gives his opinion on the leading issues affecting today’s diamond trade.

11 september 2024

Dr M'zée Fula Ngenge: Demand for considerable-sized diamonds stronger than ever

The African Diamond Council (ADC) chairperson Dr M'zée Fula Ngenge told Rough & Polished’s Mathew Nyaungwa in an exclusive interview that although overall global diamond prices have been somewhat soft, the demand for considerable-sized diamonds...

02 september 2024

Amplats sees prospects as a standalone company

Anglo has revealed its plans to demerge Anglo American Platinum (Amplats), which has operations in South Africa and Zimbabwe, to optimise shareholder value. Rough&Polished contacted Amplats to comment on this and other issues but was referred...

19 august 2024

WFDB President Yoram Dvash Remains Confident Despite Global Diamond Challenges

Yoram Dvash is President of the World Federation of Diamond Bourses (WFDB) having been elected in 2020. He found time in his busy schedule to speak to Rough&Polished about the state of the diamond industry around the world and some of the major...

12 august 2024

Russia develops high-altitude zeppelin for the Arctic

28 june 2024

Aircraft engineers of the Department of Aircraft Aerodynamics at the Moscow Aviation Institute are developing a project for a high-altitude zeppelin-type airship with solar panels, said design engineer Alexander Gomberg.

"In order to reduce the mass of the structure and abandon heavy battery cells, we propose to make solar panels (on the airship) inside a transparent shell, it will work only in the polar zone and only during the polar day," Gomberg said, speaking at the Siberian Transport Forum in Novosibirsk.

Calculations show that the batteries will allow the zeppelin to get the necessary thrust. The engineer recalled that the problem for flights at high altitude is thin air.

"We solve this issue with the help of a single pusher propeller driven by an electric motor, which has a diameter of 10 meters, in our view it is like a helicopter rotor in size," Gomberg said.

At the same time, he noted, solar panels, payload and power plant are reusable, and the shell filled with gas can be replaceable, interfax-russia.ru reports.

Alex Shishlo, Editor in Chief of the European Bureau, Rough&Polished