Prepared by the Imperial Cushions editorial team. Laboratory terminology is retained where a report is cited; historical context and dealer judgment are identified as interpretation.
Elongated old mine cushions combine historic facet character with a longer outline. Their appeal depends on more than a ratio.
Understanding the ratio
Length divided by width provides a useful reference, but equal ratios can produce different visual impressions. Rounded corners, shoulder shape and the distribution of width all matter.
Watch the central pattern
An elongated stone should not feel visually split or empty through the centre unless that effect is part of its distinctive charm. Study video for stable dark bands, bow-tie effects and the way broad flashes travel along the length.
Setting considerations
Elongated cushions can create elegant coverage in rings and pendants. A setting should protect vulnerable girdle areas while preserving the outline that made the stone desirable.