1.59 Ct. Emerald from Zambia

This gem is a transparent, emerald cut, green emerald weighing 1.59 carats, with precise dimensions of 7.85 mm by 6.06 mm by 4.32 mm. The weight of 1.59 carats immediately positions this stone in a premium size category for natural emeralds that combine transparency and vivid color. In step cut gems like this one, carat weight correlates strongly with visible surface area and perceived presence on the finger or pendant, and the 7.85 mm by 6.06 mm table footprint is substantial for a classic emerald cut. The measured depth of 4.32 mm yields a depth ratio of approximately 62.2 percent when calculated against the average of length and width, a proportion that balances internal color saturation with optimal light transmission for a step cut. The cut maintains a broad table and elongated step facets that emphasize the stone color rather than scintillation, a technical quality that collectors and connoisseurs value because it allows the vivid color intensity to remain the dominant visual attribute.

The cutting style is a traditional emerald cut with truncated corners and long rectangular step facets on both crown and pavilion, executed with crisp facet junctions and exceptional symmetry. The craftsmanship is evident in the way parallel facets create a hall of mirrors effect, producing even panes of color across the table without irregular zoning. The excellent polish contributes to clean facet reflections, minimizing surface diffusion and preserving sharp light boundaries that are characteristic of a well executed step cut. The faceting architecture in this example directs light through broad, planar facets, which reduces the appearance of brilliance and increases the importance of color and clarity. For that reason, the clarity grade of very slightly included at eye level is a meaningful advantage, because it ensures minimal distraction from internal characteristics when the stone is viewed in typical jewelry applications, while still affirming its natural origin through subtle, natural inclusions.

Color chemistry and origin are integral to the technical evaluation of this emerald, and this specimen originates from Zambia, a source known for producing stones with intense chroma and stable hue. The gem displays vivid color intensity with a saturated green that remains uniform across the table and step facets, indicating homogenous trace element distribution and minimal color zoning. The vivid intensity here is a key determinant of value, and when combined with transparency and the 1.59 carat weight, it places this emerald in a high tier relative to similarly sized stones. Enhancement is noted as standard, which for emeralds typically refers to clarity enhancement using accepted industry practices to improve levity and apparent transparency without altering the fundamental color. This disclosure is consistent with proper gemstone trade protocols and reflects common post cutting treatments that preserve the gem structure while optimizing visual performance.

From a setting and design perspective, a 1.59 carat emerald cut of this calibre affords multiple technical advantages for high end mounting. The rectangular outline and sizable table allow gem cutters to deliver consistent face up color, and the truncated corners mitigate the risk of chipping, creating safe anchor points for prong seats. For durability and to maintain optical performance, custom settings that secure the corners and protect the girdle are recommended, with four prong clutches at the corners or a partial bezel to enhance security without obscuring the step facet planes. The weight of 1.59 carats also carries practical implications for design proportionality, because the mass allows for robust mounting without compromising comfort. At The Natural Emerald Company we highlight the rarity of finding a transparent Zambian emerald at this weight that also combines vivid saturation, very slightly included clarity at eye level, and an excellent polish, making it a premium option for collectors and designers seeking a gemstone that performs technically and visually in equal measure.