1.70 Ct. Blue Sapphire from Africa

When you are searching for that perfect gem to end your quest for an engagement ring or to add a truly uncommon piece to a curated collection, you want certainty, rarity, and the quiet confidence that only a remarkable stone can deliver. This beautiful transparent 1.70 carat round blue sapphire is presented by The Natural Sapphire Company, and it is crafted by nature and refined by our expertise to meet exactly that need. At 7.37 x 7.40 x 4.36 mm this round shape sapphire carries weight and presence without overwhelming a delicate setting, and the mixed brilliant cut has been executed to balance modern sparkle with classic elegance. The clarity is described as very very slightly included, evaluated at eye level, which means this stone reads as clean and luminous to the naked eye, while maintaining the internal character that collectors appreciate. The color is a faint blue intensity, an icy sky tone that is notably rarer in this size class than the deeper traditional blues many buyers expect. Heat treated for color stability and durability, with an excellent polish that enhances surface smoothness and light return, this sapphire from Africa offers a refined option for those seeking something both beautiful and distinctive.

Rarity is at the core of this sapphire. In the market you will often find faintly colored sapphires in smaller sizes, and larger sapphires in more saturated hues, but to encounter a 1.70 carat round sapphire with a delicate, faint blue tone and the optical performance of a mixed brilliant cut is uncommon. The proportions of 7.37 x 7.40 x 4.36 mm allow the stone to present a balanced face up size while preserving depth that contributes to its subtle internal life. Compared with similar options, this gem stands apart because faint color intensity in sapphires tends to be less frequent as carat weight increases, and round cuts at this scale that remain so transparent and eye clean are particularly prized by designers and collectors who want versatility. This is the sapphire for a customer who values a gentle, refined blue that reads as elegant and modern, rather than bold and traditional, and who understands the premium of owning a stone that is both rare and wearable.

Beyond rarity, this sapphire is a practical and adaptable choice for daily wear or a signature piece. The mixed brilliant cut is designed to maximize scintillation and fire while preserving the round silhouette that flatters most finger shapes and setting styles. Excellent polish ensures that each facet catches the light cleanly, giving a lively face up appearance that will shimmer in natural daylight and indoor lighting alike. The clarity grade being very very slightly included at eye level means you are getting a gem that behaves as a visually clean stone, with inclusions that do not distract from the overall beauty, and that actually testify to the natural origin and authenticity of the material. Heat treatment is a stable and widely accepted enhancement in sapphires, applied to improve color and clarity while remaining permanent under normal wear. Origin from Africa contributes to the story of the gem, offering a lineage that collectors and brides often appreciate, and it broadens the palette of sapphires beyond the familiar sources, making this piece a thoughtful choice for someone who values provenance as well as appearance.

Choosing this sapphire through The Natural Sapphire Company means choosing a gem that ends the search and starts the next chapter of your story with confidence. We understand that you may be looking for an engagement center stone that reads unique and personal, or a collector may be seeking a subtle and rare example of faint blue in a size that commands attention without shouting. We can advise on settings that will showcase the mixed brilliant cut and the faint blue tone, from a solitaire that highlights clarity and color, to custom halo designs that enhance perceived size while preserving the icy elegance of the hue. Our gem experts are ready to provide additional photos, angles, and guidance on metal color choices that best complement this sapphire. If you are ready to make an investment in a gem that is uncommon in both its size and its gentle, refined color, this 1.70 carat round blue sapphire from Africa is a compelling solution, and The Natural Sapphire Company is here to ensure that your purchase is as confident and satisfying as the gem itself.