Netopen Raw Diamond Rough Crystal Specimen 1.2ct — Natural Canary Yellow

The Netopen Natural Canary Yellow Raw Diamond Rough Crystal Specimen at 1.2 carats represents one of the most visually compelling color varieties in the natural rough diamond collector category — the vivid yellow that results from a high concentration of aggregated nitrogen defect clusters (specifically N3 and H3 center defects) within the diamond’s carbon lattice that selectively absorb blue and violet wavelengths, producing the warm, saturated yellow that saturates the crystal face under natural and artificial light. Netopen’s gemological assessment has confirmed through infrared spectroscopy and UV fluorescence examination that this yellow color is entirely of natural origin — a distinction that carries significant authenticity and value implications in the rough diamond market where synthetic and color-treated alternatives circulate without always clear identification. Natural canary yellow rough diamonds have been among the most sought-after collector specimens since the discovery of significant yellow diamond deposits in South Africa in the 1870s that introduced intense yellow natural diamonds to the gemological world and created the first internationally recognized diamond color grading category outside of the colorless range. The crystal exhibits a well-developed octahedral habit with natural surface features including growth hillocks, trigon etch pits, and minor surface frosting that collectively authenticate the natural rough character of the specimen and distinguish it from faceted yellow diamonds where these features have been permanently removed by the cutting process. Dimensions approximately 5.3mm x 5.0mm x 4.8mm. Color saturation consistent throughout the crystal volume without zoning visible at 10x magnification. Supplied in Netopen’s signature presentation box with gemological certificate, color origin confirmation document, and collector’s information card describing the geological significance of natural yellow color in diamond.