1.56 Ct. Greenish Blue Sapphire from Montana

I present a transparent 1.56 carat round greenish blue sapphire from Montana, offered through The Natural Sapphire Company. The stone measures 6.88 x 6.88 x 4.55 mm, and it is fashioned in a mixed brilliant cut that combines a round pavilion with a faceted crown to balance fire and brilliance. The color is described as greenish blue with a medium intense color intensity, an appearance that reads as cool and sophisticated in daylight and deepens subtly under artificial light. Clarity is graded as very slightly included when evaluated at eye level, and the overall transparency allows light to travel cleanly through the gem. The polish is excellent, and the finishing facets are smooth, providing crisp light reflection across the table and crown facets. The sapphire has been heat treated, a stable and widely accepted enhancement that refines tone and clarity while preserving the natural character of the material. Origin is Montana, a source known for producing sapphires with distinct and often complex blues and green blues.

As a specialist at The Natural Sapphire Company I focus on concise technical detail, and I include here the observations that matter most to gem cutters and jewelry designers. The mixed brilliant cut on this 6.88 mm round stone delivers balanced proportions, with the 4.55 mm depth supporting strong light return without excessive windowing. The cut symmetry and facet alignment contribute to even brilliance around the girdle, and the excellent polish enhances scintillation and contrast. The clarity designation very slightly included at eye level indicates small natural features that do not disrupt transparency or strength. These natural features are commonly used as internal fingerprints that confirm the gem origin and authenticity. Heat treatment was applied to stabilize and intensify color, a common practice for sapphires that is permanent under normal wearing conditions, and the treatment does not reduce the overall stability or value when disclosed and documented.

The greenish blue tone of this Montana sapphire suggests a romantic narrative grounded in place and memory. Picture a clear mountain lake at dusk, its surface catching the final cool light and reflecting the first stars, a palette of deep blue with hints of forest green at the edges. This is the color field you carry on the hand when this stone is mounted, a daily reminder of wide sky, cold water, and quiet evenings that become intimate stories between two people. The very slightly included clarity becomes part of that narrative, little internal marks that speak of shared history and honest detail rather than manufactured perfection. In this telling the inclusions are not flaws, they are proof of a natural journey from mine to gem, like small memories suspended in stone, each one a tiny point of testimony to time and place.

For practical considerations and recommendations I describe suitable settings and care. The 1.56 carat weight and 6.88 mm diameter make this sapphire an excellent choice for a classic solitaire, a simple bezel that highlights color, or a refined four prong setting that maximizes light performance and visibility. Because the gem is transparent with medium intense color, designs that allow light to enter from the pavilion will emphasize depth and liveliness. Heat treatment is stable, however routine care involves avoiding prolonged exposure to extreme heat or harsh chemicals, and professional cleaning with warm soapy water and a soft brush is recommended. For customers who require documentation we provide condition notes and treatment disclosure through The Natural Sapphire Company, and I am available to discuss mounting options, metal choices, and custom design considerations that will best display the greenish blue tone and the mixed brilliant cut. This sapphire presents a blend of measurable quality, geological origin, and narrative warmth that suits both technical appraisal and personal significance.