Netopen Raw Diamond Rough Crystal Specimen 1.6ct — Natural Steel Blue

The Netopen Natural Steel Blue Raw Diamond Rough Crystal Specimen at 1.6 carats represents the category of natural blue diamonds — among the rarest and most scientifically significant of all diamond color varieties — where the characteristic blue color results from the presence of boron atom substitutions within the diamond’s carbon lattice that create an acceptor level in the electronic band structure, absorbing red and yellow wavelengths and producing the distinctive blue-grey to steely blue color tone that has made blue diamonds among the most valued and historically significant gemstones in the world. The steel blue character of this specimen — a slightly greyed, deeper blue rather than a vivid saturated cornflower blue — is representative of the majority of naturally blue rough diamonds recovered from documented primary sources, where the intensity of boron incorporation varies across a wide range and only the most exceptional stones reach the vivid blue saturation associated with historic examples such as the Hope Diamond. Netopen’s gemological assessment of this specimen has employed infrared spectroscopy and electrical conductivity testing — the two most reliable analytical methods for confirming the presence of boron as the color mechanism — to provide documented confirmation that this steel blue color is entirely natural in origin and not the result of irradiation treatment, coating, or other artificial color enhancement that can produce visually similar blue coloration in non-boron-bearing diamonds. Natural blue diamonds with boron-confirmed color origin are exceptionally rare at any size — this specimen represents a meaningful geological discovery and collector acquisition. Crystal habit is octahedral with moderate dissolution rounding. Partial transparency allows color to be observed in transmitted light as well as reflected. Dimensions approximately 5.9mm x 5.7mm x 5.4mm. Spectroscopic analysis certificate, color mechanism documentation, and standard provenance materials supplied.