3.10CT Sapphire: Steel Blue Grey to Violet Organic Rose Cut

Specifications 

• Gemstone: Sapphire
• Color: Steel Blue Grey to Violet 
• Weight: 3.10 Carats
• Shape & Cut: Organic Rose Cut
• Dimensions: 9.91 × 8.92 × 4.10 mm
• Origin: Montana, USA 
• Treatment: Heated 

In Natural Light

Moody and atmospheric, this substantial Montana sapphire moves through a cool spectrum of steel blue-gray and violet as the surrounding light changes. Its color has the softened quality of storm clouds at dusk—sometimes distinctly blue, sometimes smoky and silvery, with violet appearing as the stone turns.

The organic rose cut gives that shifting palette an especially expressive quality. Broad facets create slower flashes across the surface, while the irregular outline keeps the stone from feeling overly polished or conventional. At nearly 10 mm across, its generous face-up presence gives both color and natural character room to unfold.

Rather than offering a single fixed impression, this sapphire changes with its environment—quiet, sculptural, and unmistakably Montana.

The Lapidary's Eye

This organic rose cut was designed around the individuality of the original crystal rather than forcing it into conventional symmetry.

Broad, irregularly arranged facets create large planes of reflection that emphasize the transition between steel blue-gray and violet. Instead of the concentrated scintillation of a brilliant cut, light moves across the sapphire in measured flashes, revealing different areas of color with each change in angle.

Its 9.91 × 8.92 mm dimensions give the 3.10-carat stone substantial visual presence, while the 4.10 mm depth provides more body than a traditional shallow rose cut. The gently asymmetric perimeter preserves an organic quality that feels closer to the original rough, balanced by deliberate faceting across the surface.