February 15, 21by John Jeffay IDEX Online) - A fintech startup will tomorrow launch standardized diamond "coins" for investors in a move which could "reinvent the supply chain". Diamond Standard, based in Bermuda, will offer the first 5,000 diamond standard coins, each containing "a set of certified natural diamonds with identical geological scarcity" weighing 4.5 carats and to the exact value of $5,000. Each coin (pictured) also stores a wireless blockchain token that allow