Themba Mokoena writes The Diamond Edit, a South African column on diamonds, jewellery, and the trade. The column reports on the buyer side of the market: wholesale-to-public dealers in Bedfordview, GIA certification, the Kimberley Process, the cut-grade compression in 2026, and the lab-grown vs natural debate. The Diamond Edit is written in the column-byline tradition of FT's Lex or Tatler's Bystander. The byline functions as a column convention, and the column does not do filmed segments, but provides on-the-record written commentary by email for journalists covering jewellery, luxury goods, and consumer guides in the South African market. Available for source quotes on: - The retail-versus-trade structure of the South African diamond market - GIA, EGL, and SGL certification differen...