Radiant Cut

The Mixed-Cut Master

The radiant cut's story begins not in 1977, but in 1970 — with South African master diamond cutter Basil Watermeyer and what he later called "a lucky accident." While cutting a typical emerald cut, one of the pavilion facets accidentally fractured into a half-moon shape. Rather than discard the stone, Watermeyer recognized the optical potential and spent years developing what became the Barion Cut — named by combining his and his wife Marion's names.

The Barion was revolutionary: the first cut to incorporate both vertical faceting and horizontal steps, combining the intricate craftsmanship of the emerald cut with the brilliance of the round brilliant. With 80+ facets, it solved the fundamental problem of bowtie extinction in elongated cuts. Watermeyer documented his discovery and 33-year career of cutting knowledge in his landmark book Diamond Cutting: A Complete Guide to Diamond Processing (ISBN 0620132485) — now out of print and a collector's item in its own right.

In 1977, Henry Grossbard introduced the commercial "Radiant Cut" — a simplified adaptation of Watermeyer's mixed-cut principle with approximately 70 facets, designed for broader production. This made the concept accessible to the wider market, and the radiant quickly became a powerhouse for fancy color diamonds.

For Brian Gavin, this history is personal. Trained by his father and grandfather and apprenticed under master cutters Allen Goldstein and Bobby Vancrayfeld, Brian's cutting education was steeped in the same South African tradition that produced Watermeyer. The principles Watermeyer pioneered — the understanding that mixed-cut faceting could solve light leakage in non-round shapes — directly influenced Brian's own patented innovations in emerald and cushion cut light performance.

70-Facet Brilliance

The radiant's 70 facets include brilliant-style faceting on both crown and pavilion — kite, triangular, and half-moon shapes arranged to maximize light reflection from every angle. The cropped corners add 4 additional facets beyond what a standard rectangular shape would have.

This high facet count creates intense, complex sparkle patterns with smaller, more numerous light flashes than cushion cuts. Some describe the radiant's sparkle as "crushed ice" — a shimmering, kaleidoscopic effect that catches light from every direction.

Radiant vs. Emerald: The Key Distinction

Radiants and emeralds share the same rectangular outline with cropped corners, but their faceting creates completely different optical effects:

• Emerald: Step-cut faceting creates broad, mirror-like flashes — elegant and understated
• Radiant: Brilliant faceting creates intense sparkle and fire — vibrant and eye-catching

The choice between them is aesthetic: sophistication vs. sparkle. For fancy colors where both saturation and brilliance are desired, the radiant often wins.

The Fancy Color Advantage

The radiant's brilliant faceting intensifies color through multiple internal reflections while its depth allows longer light paths through the colored material. This double advantage makes it exceptional for:

• Fancy Yellow: Radiant cuts account for significant share of investment-grade yellows, second only to cushions
• Fancy Pink: Many Argyle pinks were cut as radiants; the shape maximizes color retention from small rough
• Fancy Orange: The Pumpkin Diamond — one of the most famous oranges — is a radiant cut

Key Proportions

• Table: 60-67% optimal
• Depth: 62-68%
• Polish/Symmetry: Excellent/Very Good minimum

Our Radiant Standards

• ✓ Expert cut evaluation by Brian Gavin — no GIA cut grade exists for radiants
• ✓ Minimal bowtie verified through imaging (radiants can show bowtie in elongated ratios)
• ✓ GIA certified with full documentation
• ✓ Fancy color expertise — we evaluate how the cut optimizes color saturation
• ✓ Type classification verified for significant stones

Each Shape Tells a Different Story

• Round Brilliant — Maximum brilliance; The Gavin Effect® patented cut
• Emerald Cut — Sophisticated step-cut elegance; patented light performance
• Cushion Cut — Romantic pillow shape; patented Hearts & Arrows precision
• Oval Cut — Elongated brilliance; appears larger for carat weight
• Pear Cut — Elegant teardrop; versatile and flattering
• Radiant Cut — Brilliant fire meets geometric outline
• Princess Cut — Modern square brilliant; exceptional scintillation
• Marquise Cut — Royal heritage; maximizes carat weight appearance
• Old Mine Cut — Historic hand-cut diamonds; antique brilliance

All consultations are complimentary and without obligation. We build long-term relationships based on education, trust, and exceptional service.