Celebrated across the gemological world as "an emerald by day, a ruby by night," this 0.25-carat Natural Alexandrite exhibits the dramatic, unmistakable color-change phenomenon that defines fine chrysoberyl. Precision-faceted into a round brilliant cut with excellent symmetry, this rare collector's gem displays a vibrant bluish-green hue in natural daylight, shifting seamlessly to an alluring purple-red under warm incandescent lighting.
Completely natural and free from any thermal enhancement, diffusion, or synthetic treatment, this gemstone is accompanied by an official identification report from the Asian Institute of Gemological Sciences / Antwerp International Gemological Laboratories (AIG) confirming its natural origin and untreated status. With slight VVS clarity and outstanding optical liveliness, it serves as an exquisite centerpiece for a bespoke signet, halo engagement ring, or a prized addition to an elite phenomenal gem collection.
Gemstone Specifications
| Species | Natural Chrysoberyl |
| Variety | Natural Alexandrite (Phenomenal Color Change) |
| Carat Weight | 0.25 ct |
| Color & Color Change | Green / Bluish-Green (Daylight) to Purple-Red (Incandescent Light) |
| Clarity | Slight VVS (High crystalline transparency with crisp brilliance) |
| Shape & Cutting Style | Round Brilliant Cut (Excellent Polish & Scintillation) |
| Enhancement / Treatment | No Indications of Treatment (100% Natural & Untreated) |
| Laboratory Report | AIG Certified |
The Optical Wonder of Natural Alexandrite
True natural alexandrite owes its extraordinary color shift to trace amounts of chromium integrated within the chrysoberyl crystal lattice. Because chromium creates narrow absorption bands in the yellow spectrum, the gem appears green when illuminated by balanced, blue-rich daylight and transforms to red-purple when exposed to incandescent or candlelight rich in red wavelengths. Untreated stones with clear, distinct shifts and sharp crystal clarity represent one of the rarest finds in fine gemology.
Bespoke Custom Jewelry Commission
This certified natural alexandrite is available as a loose investment gemstone or ready for custom mounting. Speak with our master jeweler to design a bespoke solitaire ring, vintage-inspired halo, or three-stone setting in 18K yellow gold, rose gold, or platinum crafted to highlight its captivating dual-color performance.
