0.85 Ct. Alexandrite from Tanzania

There are stones that feel like they remember the land they came from, and this Tanzanian alexandrite is one of them, a 0.85 carat cushion shaped gem that carries both the hillside and the workshop in its light, measured at 4.84 by 4.75 by 4.08 mm. Imagine it born deep in metamorphic rock, where traces of chromium caught and held sunlight for a geologic heartbeat, and then guided by the hands of miners and cutters who saw the possibility of a color story within a pebble. At The Natural Gemstone Company we trace that story carefully, noting that this piece is transparent, shows a yellowish green to reddish green color change with medium intensity, and has been brought to life with a mixed brilliant cut that maximizes its internal fire. The clarity grade reads very slightly included when viewed at eye level, which gives the stone personality without distracting from its crystalline clarity, and the polish is excellent which lets every facet sing when light moves across the surface. There is no enhancement, the color and structure are natural, and that honesty is part of why this gem feels like a companion rather than a commodity.

When you hold the stone under daylight you see a fresh yellowish green, a softened forest tone that speaks of leaf litter and sun through canopy, but when you move under incandescent light a reddish green note appears, a warmer, fleshier hue that hints at sunset and ember glow. That change is the alexandrite miracle, the kind of shift that has fascinated collectors since the stone was first admired in the 19th century, and this example from Tanzania wears that legacy with a modern clarity. The mixed brilliant cut gives the cushion shape a contemporary heartbeat, with a table and pavilion geometry that balances scintillation and color, allowing flashes of green and red to alternate across the face as you tilt the gem. At 0.85 carat and with the modest dimensions listed it is perfectly suited to be a memorable center gem that still feels intimate and wearable, ideal for a ring or pendant that is intended to be both elegant and conversational.

For a custom setting that celebrates the color change and the Tanzanian origin, consider surrounding the cushion alexandrite with small white diamonds in a delicate halo to amplify brightness during daylight, and to provide a shimmering counterpoint when the red tones emerge under warm light. Tiny melee diamonds of mixed brilliant cuts will reflect white light into the pavilion and intensify the perceived depth of the alexandrite without competing with it. If you wish to emphasize the red phase, set the center gem in 18 karat rose gold and flank it with small natural pink sapphires or rubies, the warm metal and red accents harmonizing with the reddish green flashes and creating a vintage inspired warmth. To pull out the green side, a thin bezel or accent beads of green chrome tourmaline or tsavorite garnet will echo the cooler notes, creating a tonal ensemble that reads as a garden in miniature. For a modern three stone design choose tapered baguette diamonds or green tourmalines to the sides, the long facets guiding the eye and elongating the hand when worn as a ring.

Because this alexandrite is modest in physical size yet remarkable in character you will want accent stones that respect scale, small melee diamonds in the 1.0 to 1.8 mm range for a halo, tiny baguettes under 3 mm for shoulders, and paired colored stones that are subtle in saturation so they lift the alexandrite rather than overpower it. A platinum setting will offer a crisp, neutral stage that emphasizes the color change, while yellow gold will bring out the lemon green in daylight, and rose gold will warm the red phase beautifully. At The Natural Gemstone Company we can help sketch a design that places this 4.84 by 4.75 by 4.08 mm cushion alexandrite at the heart of a piece that tells your story, selecting complementary stones that enhance either the green or red side on demand, and arranging metal and setting to make the color change the performance it deserves to be. This is a gem that begins in rock, travels through skilled hands, and finishes as a very personal heirloom poised to reveal a different face with every note of light.