1.66 Ct. Blue Kyanite from Brazil

This transparent 1.66 carat oval blue kyanite measures 8.09 x 6.13 x 3.65 mm, and is faceted in a mixed brilliant style with an excellent polish. Originating from Brazil, this specimen exhibits intense color intensity and a clarity graded as slightly included when evaluated at eye level. No enhancements have been applied, preserving its natural optical characteristics. The proportions and mixed brilliant faceting were executed to balance depth and table openness, allowing the stone to present strong color saturation while maintaining lively return of light across the crown and pavilion facets.

The most distinctive attribute of this kyanite is its internal growth architecture, which produces an unmistakable signature. Fine, parallel linear growth structures and slender bladed inclusions align with the crystal axis, producing subtle striations and reflective planes that interact with faceting to create layered depth. Thin oriented platelets and wispy internal features generate localized flashes and banding when the stone is rotated under light, offering a dynamic interplay between internal texture and external brilliance. These characteristics are intrinsic to kyanite from this Brazilian source, and they confirm the gem as a natural, untreated material in the way color and light are modulated from within. While the stone remains transparent, the slightly included grade contributes to a three dimensional character, enhancing perceived depth without compromising table clarity. In a polished mixed brilliant cut, these inclusions are not obscuring, rather they act as identifying markers, a fingerprint that distinguishes this gem from color similar stones. The Natural Gemstone Company documents these traits for accurate identification and for clients who value the geological individuality of a natural gem, as opposed to chemically altered alternatives.