1.70 Ct. Blue Sapphire from Madagascar

For centuries the sapphire has been a symbol of wisdom, protection, and enduring love, treasured by kings and sailors, poets and priests. This particular gem, offered by The Natural Sapphire Company, embodies that lineage with a pure and unaltered origin, straight from the rich soils of Madagascar. We present a transparent cushion shaped blue sapphire, weighing 1.70 carat, with measurements of 6.43 x 6.31 x 4.76 mm, a mixed brilliant cut that balances scintillation and depth, a clarity assessed as very slightly included at eye level, a dark color intensity that gives the stone a velvety presence, and an excellent polish that reveals its inner glow. Importantly, this sapphire has received no enhancement, a trait that marks it as authentically natural and particularly prized by connoisseurs who value geological integrity and the quiet prestige of an untreated gem.

Viewed face up, this cushion sapphire shows a deep, saturated blue that moves from midnight to peacock in different lights, a richness that feels both ancient and immediate. The mixed brilliant cut was chosen to maximize both brilliance and the cushion form, permitting fire in the pavilion and broad, reflective flashes from the crown, while the excellent polish ensures crisp facet junctions and lively light return. The very slight inclusions are characteristic of natural sapphires from Madagascar, adding a fingerprint of origin without distracting from the overall transparency. At 1.70 carat the gem has a presence substantial enough to command attention, yet modest enough to translate beautifully into a range of refined designs, the kind of stone that reveals new subtleties over a lifetime of wear and that grows more meaningful with every passing year.

This sapphire adapts gracefully to a wide variety of custom settings, making it an ideal choice for those who wish to commission a piece with both historical resonance and contemporary appeal. As a solitaire engagement ring it will read as classic and enduring, the cushion silhouette offering antique charm, while a halo of small white diamonds will modernize its brilliance and emphasize its face up size. In three stone compositions it pairs beautifully with tapered baguettes or trillion cut accents for a balanced, architectural look, and in a bezel the gem takes on a quiet, wearable robustness for everyday life. Consider rose gold to warm the blue and evoke vintage romanticism, or choose platinum to create a crisp, modern presentation. The stone also lends itself to non traditional placements, such as a low set signet style ring, an east west orientation for a contemporary engagement, a pendant set to hang close to the heart, or a pair of bespoke stud earrings paired with matching melee. At The Natural Sapphire Company we can provide CAD renderings, metal suggestions, and matching stones, ensuring that the final creation honors the sapphire s character and the personal story it will represent.

A natural, unenhanced sapphire of this quality is more than an object, it is a legacy waiting to be set and worn. Its hardness and structural stability make it suitable for daily wear, and its deep blue color carries the gravitas of history while fitting seamlessly into modern wardrobes. Caring for this gem is simple and straightforward, warm soapy water and a soft brush will keep its facets lively, and periodic professional inspections will preserve the integrity of the setting over time. If you are drawn to a stone that combines geological authenticity, classic form, and versatile design potential, this 1.70 carat Madagascar cushion blue sapphire at The Natural Sapphire Company deserves consideration. We invite you to contact us to explore setting options, to request additional photos or videos, and to begin a custom design journey that will transform this naturally beautiful stone into an heirloom for generations.