Diamond

Profile

A flattened, four-sided rhomboid — like a disc pulled to a point at each end rather than left round — frequently reported with a fiery or flame-like glow along its edges rather than the cool metallic surface of a classic saucer. The type's two defining American cases are strikingly different in character: the December 1980 Cash-Landrum encounter, where a diamond-shaped object described as 'flaming' hovered low over a rural Texas road escorted by a fleet of military helicopters, leaving three witnesses with radiation-like burns; and the 1990 Calvine photograph, a single, exceptionally crisp image of a massive silent diamond-shaped craft over Scotland that the UK Ministry of Defence reportedly examined and ruled out as fakery internally, yet withheld from public release for thirty-two years. Diamond reports as a class tend to skew toward daylight and close-range sightings rather than distant night lights, which is part of why the shape carries an outsized share of the field's best physical-evidence and photographic cases relative to its overall report frequency.

Skeptical reading

Cash-Landrum's military-helicopter escort has never been matched to any acknowledged unit or exercise despite a Freedom of Information lawsuit and a failed civil suit against the U.S. government, leaving the case's central diamond object formally unidentified even by skeptical investigators, several of whom nonetheless propose an experimental or malfunctioning military aircraft as the likeliest mundane candidate. The Calvine photograph's three-decade MoD withholding is publicly attributed to routine file-retention lapses rather than active suppression, though the gap has fueled persistent suspicion; independent photo analysis since its 2022 release has not identified conclusive evidence of fakery, keeping the image itself technically unresolved.

Famous cases

• The Cash-Landrum Incident
• The Calvine Photograph