Loose Triangular Cut Diamonds

The terms “trillion,” “triangular,” and “trillion brilliant” are often used interchangeably but have subtle distinctions in the diamond industry. Traditionally, “trillion” refers to a perfect equilateral triangular shape with curved sides, while “triangular” encompasses any three-sided diamond including those with straight sides or irregular proportions. “Trillion brilliant” specifically indicates a triangular diamond cut with a brilliant faceting pattern (typically 44-50 facets) designed to maximize sparkle rather than a step-cut arrangement. When purchasing these distinctive natural stones, verify the exact specifications, as the cutting style significantly affects both light performance and price of these rare, conflict-free gems, with brilliant-cut versions typically commanding higher values due to their enhanced sparkle.

Triangular shaped diamonds represent less than 2% of the global diamond market due to several factors. Their specialized cutting requirements demand specific rough crystal shapes that occur less frequently in nature. The cutting process also yields lower recovery from rough, increasing production costs of these precious stones. Additionally, their distinctive geometric shape appeals to a smaller segment of collectors seeking alternative aesthetics rather than traditional diamond silhouettes. Market scarcity creates both challenges and opportunities—while selection may be more limited, reduced competition often results in better value per carat compared to mainstream shapes. For purchasers seeking genuine uniqueness, this relative rarity ensures a truly distinctive acquisition with significant character.

Triangular diamonds perform best in settings specifically designed to protect their points while showcasing their geometric character. Three-prong settings with V-tips at each point provide both security and visual emphasis, while bezel or semi-bezel settings offer maximum protection for active wearers. For these high-quality gems, consider tension settings that expose maximum light entry to enhance brilliance, or architectural designs that complement their modern aesthetic. When purchasing settings for triangular diamonds, ensure the mounting accounts for their lower profile compared to round brilliants, allowing them to sit securely without excessive height. The best settings highlight the stone’s unique trilateral symmetry while providing proper structural support for these distinctive, conflict-free precious stones.

The most appealing triangular cut diamonds feature perfect equilateral proportions with sides of equal length creating perfect 60-degree angles. Depth percentages of 32-40% optimize light return without excessive weight hidden where it doesn’t enhance appearance, providing better value. Some collectors prefer slightly curved sides that soften the geometric outline, while others value the architectural precision of straight edges—both are premium variations rather than quality differences. When evaluating these rare stones, examine them from multiple angles to ensure proper facet alignment that eliminates dark areas. The table size (typically 50-65% of width) should balance with the depth to create consistent brilliance throughout the natural gem, justifying its unique worth and cost.