5.06 Ct. Ametrine from Ceylon (Sri Lanka)

There is something quietly sovereign about a gem that carries two colors within a single crystal, and this 5.06 carat oval bi color ametrine from Ceylon, offered by The Natural Gemstone Company, speaks to an ancient conversation between earth and time. Ametrine has roots that trace back not only to the volcanic histories of its birthplace in Sri Lanka, but also to the long human tradition of admiring stones that change with the light. This particular stone measures 13.72 x 9.77 x 6.87 mm, and its medium color intensity reveals a harmonious balance between the warm golden tones of citrine and the regal purple of amethyst. Those two hues have been prized for centuries, one symbolizing light and prosperity, the other representing wisdom and spiritual depth. Set into a classic setting that honors its oval silhouette, this gem becomes a wearable heirloom, one that references lineage and legacy while remaining utterly contemporary in its appeal.

The brilliance this ametrine displays is in large part a consequence of its internal structure and the way it was cut, the mixed brilliant cut here is an ideal choice because it combines the scintillation of a brilliant with the elegant table and step facets of traditional cuts, producing flashes that move with every gesture. At the atomic level, ametrine is a variety of quartz, and its slightly differing zones of oxidation and trace iron during formation create distinct chromatic regions, each responding differently to light. Light entering the stone is refracted and reflected by carefully proportioned crown and pavilion facets, the angles chosen to maximize return of light through the table and generate lively, contrasting flashes across the purple and yellow zones. The clarity grade is eye clean when evaluated at eye level, meaning there are no obstructions to the passage of light that would dull its play, and the excellent polish ensures each facet behaves like a tiny mirror, sharpening contrasts and intensifying sparkle. Even with natural birefringence that quartz exhibits, it is the thoughtful faceting and the gemologist eye that transform the inherent optical properties of the crystal into a dynamic visual performance that feels unmatched in its nuanced brilliance.

As a gemstone professional, I always encourage clients to imagine how a stone will live over time, and this heat treated ametrine has been enhanced to stabilize and refine its tones without masking the geological story in its body. Its mixed brilliant oval form lends itself to a range of classic designs, from a solitary ring that commands attention to a pendant that rests with quiet authority against the chest. On the hand it measures elegantly, the 13.72 x 9.77 x 6.87 mm proportions offering presence without overpowering, the 5.06 carat weight sitting comfortably in a design meant to be worn and admired. Because the gem is eye clean, its sparkle is driven purely by light and cut rather than by distraction from inclusions, and the medium color intensity means the stone plays well under natural sunlight and indoor illumination alike, shifting between warm golden fire and regal violet flashes as the viewing angle changes. At The Natural Gemstone Company we respect the lineage of stones like this, and we recommend settings that allow the crown to open to the light, such as a low bezel with delicate prongs or a classic four prong mount that secures the gem while giving free passage to light. This ametrine is a testament to geological patience and human craftsmanship, an object that honors tradition, invites future stories, and sparkles with a clarity and life that will be cherished for generations.