Fine colour diamonds are probably the most rare and costly of all gem stones. Their ranks include the world’s most famous jewel—the Hope—and the costliest gem ever auctioned—The Graff Pink. When French luxurious conglomerate Moët Hennessy Louis Vuitton acquired Tiffany & Co. in January, LVMH administration immediately signalled that big adjustments have been afoot, whether or not clients favored them or not. Quoting sources close to the negotiation, US business publication CNBC reviews that the two events are in “fluid” talks to revise the terms of the merger, lowering the general worth of the deal from $US135 per share to …