Paul Zimnisky warns diamond industry is "killing the proverbial golden goose," urges radical split from LGDs

Diamond industry analyst Paul Zimnisky delivered a sobering assessment of the sector's 2025 performance, placing blame squarely on the trade's own practices. He argued that by marketing natural and lab-grown diamonds (LGDs) as interchangeable...

29 december 2025

Goldplat reports challenging year with strategic shifts amid lower profits

Goldplat PLC's annual report for the year ended 30 June 2025 presents a year of operational and financial challenge, marked by a significant reduction in profitability. The company reported a profit after tax attributable to owners of GBP1,01 million...

22 december 2025

David Johnson: De Beers charts cautious Angola return amid industry transformation

De Beers is rebuilding its presence in Angola through government partnerships and community engagement, marking a strategic comeback following its difficult exit years ago from the diamond-rich nation. However, De Beers spokesperson David Johnson cautioned...

24 november 2025

Maria Krasnova: Colored gemstones are a serious investment

Maria Krasnova, Executive Director of the renowned company “Samotsvety ot Sokolov” (Gems by Sokolov), spoke to Rough&Polished about the Gemstone project aimed at selling precious stones, as well as about current market trends, new challenges...

17 november 2025

Forging a new legacy: Tshenolo Ntshekang on building a black-owned diamond beneficiation business in South Africa

In an industry historically defined by limited access and foreign dominance, Tshenolo Ntshekang is carving a new path. The founder of Banzi and Karolo Projects, a black-owned diamond beneficiation business, Ntshekang, represents a growing wave of...

03 november 2025

Scientists obtain new optical materials with nanodiamond inclusions

25 october 2024

A team from eight scientific institutes in Russia has developed new materials for fine optics, the press service of the Ministry of Education and Science reported.

The new material is based on the silicon dioxide aerogel, a porous ultralight material embedded which ultra-fine nanodiamonds.

"Scientists have obtained new transparent composite materials containing nanocrystalline diamonds evenly distributed in a silicon dioxide aerogel matrix. The concentration of nanodiamonds in the composites was 0.01% - 1%, which made it possible to change the optical characteristics of the materials in a controlled manner. Such composites are promising functional materials for optics and optoelectronics," the press service noted.

Chemists use diamond nanocrystals obtained by detonation method. Such nanodiamonds are considered very promising materials for many fields, which include, for example, quantum photonics, high-precision environmental sensing, biovisualization, targeted drug delivery, and chemical catalysis among others, TASS reports.

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