1.68 Ct. Cabochon Alexandrite from Ceylon (Sri Lanka)

Introducing a rare and captivating alexandrite from Ceylon offered exclusively by The Natural Gemstone Company, this beautiful semi translucent specimen weighs 1.68 carats, and it is fashioned into a classic round shape with a cabochon cut. The dimensions measure 6.66 by 6.40 by 4.20 millimeters, which gives it substantial presence for a stone under two carats while remaining elegant and wearable. What immediately commands attention is the dramatic color change, shifting from a deep bluish green in daylight to a rich reddish purple under incandescent light, a phenomenon that is the hallmark of true alexandrite. The gem displays vivid color intensity and an excellent polish, imparting a lively glow and smooth surface that enhance its visual depth. The semi translucent nature of the stone allows light to penetrate and refract gently, producing a soft, almost liquid appearance that is particularly alluring in a cabochon form, and that makes this piece a standout for collectors and connoisseurs alike.

Under magnification the clarity grade is described as very very slightly included when evaluated at eye level, and this subtle natural inclusion structure attests to the gemological authenticity and natural origin of the material. The inclusions are not intrusive to the overall beauty of the stone, and in many cases they contribute to the character and individuality of the alexandrite, confirming that it is a natural gem rather than a synthetic or heavily treated material. This alexandrite has no enhancement, it is completely untreated, and it is offered with certification from Other, with the lab color classification noted as color change. The absence of enhancements combined with Sri Lankan origin adds to the desirability of the piece, as Ceylon alexandrites are prized for their balanced tones and lively changes, and collectors often seek specimens that have retained their natural state without heat treatments or diffusion processes.

The color change exhibited by this alexandrite is particularly notable for its strength and clarity, with a true bluish green under daylight or fluorescent conditions that transitions to a warm reddish purple under incandescent or warm LED lighting. In natural daylight the stone can read as a teal or peacock blue green, with pronounced depth and cool undertones. When moved into warm interior lighting the same stone reveals notes of plum, berry, and a muted red violet, which can be surprising and enchanting for anyone who experiences the change for the first time. The cabochon cut enhances the color play by creating a smooth reflective dome that softens the transition and produces a gentle, luminous shift rather than abrupt banding, and small reflections along the dome can create a ribbon or sheen that accentuates the change as the gem is tilted. This dynamic quality means the stone is never static, it tells a story as light and environment change, and it invites repeated viewing and personal interaction.

From a design perspective this alexandrite offers exceptional versatility, and it can serve as the focal point of a bespoke ring, a pendant that captures attention, or a collector cabochon for display. For jewelry that emphasizes the warm red violet tones choose yellow or rose gold settings to bring forward the stone warmness, and for designs that highlight the bluish green choose white gold or platinum for a cooler, more modern contrast. The stone size and cabochon shape work beautifully in vintage inspired bezels, minimalist modern mounts, or as a center stone accented with small diamonds or colored gemstones to enhance either the green or the purple aspects. For collectors and investors, the combination of natural origin, no enhancements, vivid color change, and a certified report make this alexandrite a compelling acquisition, as high quality natural color change stones remain relatively scarce compared to other gem varieties, and provenance from Ceylon contributes to long term desirability.

If you would like to experience this alexandrite in person or to see additional imagery and a video demonstrating the color change under both daylight and incandescent conditions please contact The Natural Gemstone Company, we are happy to provide high resolution photos, custom videos, and any additional measurements or viewing angles you request. We can also assist with custom mounting options and provide recommendations for metal, setting style, and protective design considerations to ensure the cabochon remains secure and beautifully showcased. Because this piece is certified and untreated we can supply the certification details with your purchase, and we welcome inquiries about shipping, insurance, and bespoke packaging for gifting or presentation. For collectors, designers, and those seeking a single truly special alexandrite that changes from bluish green to reddish purple, this Ceylon cabochon represents an extraordinary opportunity, and we look forward to helping you bring it into your collection or into a finished piece of jewelry.