Emerald is the green variety of beryl, colored by chromium and vanadium. Beloved since antiquity, its lush green is so defining that inclusions are tolerated as a natural signature.
Emeralds are graded above all on the purity and vividness of their green, then on origin and clarity.
Pure, slightly bluish green with a soft glow. Muzo and Chivor are legendary names commanding the highest prices.
Slightly bluish, often cleaner and more saturated; excellent value and increasingly prized.
A rare pattern with six dark spokes radiating from the center; collector appeal beyond pure color grading.
Six main criteria determine the price per carat. It is their combination that sets the final value.
The dominant factor. A vivid, pure-to-bluish green of medium-strong tone is ideal; too light or too dark reduces value sharply.
Colombia sets the benchmark, followed by Zambia and Brazil. A certified Colombian origin adds a clear premium.
Almost all emeralds are oiled to fill fissures. "None to minor" treatment certified by a lab is worth far more than "moderate" or "significant".
Inclusions (the "jardin") are expected and accepted. The aim is good transparency and no fractures that threaten durability, rather than flawlessness.
Price per carat rises sharply with size: fine large stones are rare, so they are proportionally far more expensive.
A report from a recognized lab (GIA, SSEF, Gübelin, GRS, AGL) confirms identity, origin and treatment, securing the valuation and resale.
A vivid, slightly bluish green with medium-strong saturation is the most coveted. Brightness and an even color across the stone matter as much as hue.
Unlike diamonds, emeralds are valued for life and depth of color, not flawless clarity.
The internal "jardin" (garden of inclusions) is part of an emerald's identity and proves it is natural. Eye-clean emeralds carry a strong premium.
Oiling is standard; the key value lever is the degree of clarity enhancement stated on the certificate — the less, the better.
Geographic origin can be a strong prestige marker that weighs on value.
Muzo and Chivor: pure bluish-green, the world reference.
Very high priceSaturated, often cleaner stones; superb value.
Mid-high priceLarge output, lighter to medium greens.
Mid priceSmall intense greens prized for color.
Mid priceFine Colombian-like material in limited supply.
VariableNewer source with promising fine greens.
AccessibleIllustrative price index (2010 = 100) for fine, certified stones.
Top Colombian emeralds have appreciated steadily as fine rough becomes scarcer.
Certification of origin and minimal treatment is decisive for resale value and speed.
Illustrative figures for fine, certified stones — not financial advice.
Orders of magnitude for a faceted emerald — fine Colombian stones with minor oil can far exceed these figures.
Indicative estimates — they do not replace a laboratory appraisal.
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