4.00 Ct. Emerald from Zambia

This C.Dunaigre certified, 4.00 carat emerald presents as a transparent, intensely colored green stone with precise emerald cut proportions, measuring 11.11 by 8.68 by 5.56 millimeters, and an assessed clarity of very very slightly included, evaluated at eye level. The cutter employed a classic step faceting scheme, producing broad concentric terraces on the crown and pavilion with crisply defined facet junctions and a prominent rectangular table, resulting in controlled light return and a rich, saturated face up appearance. The length to width ratio yields an elegant elongated outline, while the depth corresponds to approximately fifty six percent of the average girdle diameter, a proportion chosen to balance brilliance and color retention in a step cut. Polish quality is excellent, with mirror-like facet planes that enhance transparency and internal color zoning is minimal, allowing the intense green to read uniformly across the table. Enhancement is standard, using conventional clarity treatment to stabilize and visually integrate natural fissures without compromising structural integrity, and the origin is Zambia, with trace element chemistry characteristic of chromium and vanadium chromophores that produce this vivid green. The Natural Emerald Company presents this gem with its laboratory documentation and a clear account of its enhancement and origin, suitable for the discerning collector or for custom high end mounting.

Geologically, this emerald began forming millions of years ago during regional metamorphism and hydrothermal activity within Zambias host rocks, where beryllium rich fluids migrated along shear zones and fractures and encountered chromium and vanadium bearing pelitic and ultramafic sequences. Under elevated temperature and pressure, slow crystalline growth allowed well developed beryl prisms to nucleate, incorporating trace chromophores that produce the intense green color, and growth occurred in episodic pulses that left fine internal planes and characteristic very very slight inclusions. Subsequent uplift and erosion released these crystals from their host matrix, after which careful lapidary planning oriented the rough to preserve weight and color, and the master cutter executed a precise emerald cut to minimize material loss while maximizing color saturation and face up appeal. The result is a technically refined gemstone that communicates its geologic history through color, transparency, and facet architecture, offered with full certification and provenance through The Natural Emerald Company.