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Zambian Emeralds

A Zambian emerald is an emerald mined in the Copperbelt region of Zambia, chiefly around the Kagem mine, where iron in the host rock gives the beryl a cool, slightly bluish green. Zambian stones are often cleaner than their Colombian counterparts and frequently carry less clarity enhancement, which is why they have become the trade's main alternative source. Byrex Gems offers Zambian emeralds to the jewellery trade from Toronto, filmed unedited, with prices for approved buyers and viewings by appointment.

Where to buy Zambian emeralds in Toronto

Byrex Gems lists 80 Zambian emeralds online today. 54 of them come with a report from laboratories including GIA, GRS and CDC. Viewings are at our Toronto office, 27 Queen Street East, Suite 407, steps from Queen subway station, by appointment. We have supplied coloured gemstones and natural fancy colour diamonds to jewellers and designers since 1988, and welcome private clients by appointment. Prices are shown to approved trade accounts; private clients can ask us on WhatsApp, where we reply within 12 hours, or by email within 24 hours. Every stone ships insured, worldwide.

Among the zambian emeralds listed today: 3.38 ct Emerald Cut Emerald Pair (1.87 + 1.51 ct), Zambia, 2.85 ct Emerald Cut Emerald, CDC, Zambia Minor oil, 52.96 ct Shield Emerald Carving, GIA, Zambia, 45.26 ct Fancy Emerald, GRS, Zambia Minor oil, 45.06 ct Fancy Emerald, GRS, Zambia Minor oil, 11.89 ct Square Emerald Cut Emerald Pair (5.77 + 6.12 ct), GRS, Zambia No Oil, 11.37 ct Pear Emerald Pair (5.85 + 5.52 ct), Zambia, 11.06 ct Emerald Cut Emerald, GIA, Zambia Minor oil, 10.29 ct Amulet Pear Emerald, Zambia, 10.25 ct Square Emerald Cut Emerald, GIA, Zambia Moderate, 10.14 ct Oval Emerald, GIA, Zambia, 9.56 ct Pear Emerald Pair (4.83 + 4.73 ct), GRS, Zambia Minor oil and 68 more.

Where Zambian emeralds come from and how they look

Zambia's emeralds come from the Ndola Rural Emerald Restricted Area in the Copperbelt, south-west of Kitwe. The largest producer is Kagem, operated by Gemfields in partnership with the Zambian state, and it is widely regarded as one of the most important emerald mines in the world. The emeralds grow in schist in contact with pegmatite veins, the classic setting for the species outside Colombia.

That setting supplies iron, and iron is what gives Zambian emeralds their character. Chromium provides the green, iron adds a cool bluish note and a slightly deeper tone, and the combination produces a crisp, saturated colour that photographs well and holds up under incandescent light. The best Zambian stones are a vivid bluish green with high transparency; weaker material can look dark, slightly greyish or inky.

The crystals are often cleaner than Colombian rough, with fewer open fissures, so a larger share of the production can be cut into stones that need little or no filling. Typical inclusions are fine needles and plates of mica and amphibole minerals, and two-phase fluid inclusions.

How laboratories separate Zambian from Colombian

Origin on a report is an opinion. Laboratories reach it by comparing inclusions, absorption spectra and trace-element chemistry with reference stones from known mines. For emerald, iron is the most useful marker: Zambian stones carry substantially more iron than Colombian stones, and the difference shows both in the chemistry and in the spectrum. Inclusions reinforce the call. The mica, amphibole and two-phase inclusions typical of schist-hosted emeralds point away from Colombia, whose stones form in shale and carry different suites.

GIA, Gübelin, SSEF and AGL issue origin opinions on emerald and sometimes record the result as inconclusive when the evidence overlaps. The same reports state the degree of clarity enhancement in the laboratory's own words: GIA uses none, minor, moderate or significant; SSEF and Gübelin also use insignificant; AGL grades from faint to prominent. These scales are not interchangeable and Byrex quotes the issuing laboratory.

Zambian emeralds are, as a group, less enhanced than Colombian ones because the rough has fewer open fissures. A grade of none or insignificant is more common, and buyers increasingly treat a clean, lightly enhanced Zambian stone as a sound alternative to a Colombian stone with a heavier grade.

What a jeweller should check in a Zambian emerald

Judge the colour viewed from the top under daylight-equivalent light and then under a warm lamp. Good Zambian stones keep their bluish green under both; weaker ones can go dark or greyish in incandescent light, so check in the light the client will wear it in. Tone is the main risk: a stone cut too deep to save weight can look inky, and a shallow stone can show a window.

Read the enhancement grade in the laboratory's wording and ask whether the filler is oil or resin. Many Zambian stones are graded none, insignificant or minor, and that is part of their appeal, so do not pay a Colombian price for the origin and ignore the grade. Check the girdle and corners for surface-reaching fissures and tell the setter where they are.

Calibrated sizes and pairs are more achievable in Zambian material than in Colombian, because the supply is steadier and the colour runs more consistently within a parcel. Byrex lists two stones as a pair only when the parcel paper or report says so, otherwise as a close match. Use a protective setting, avoid ultrasonic and steam cleaning, and keep the stone away from the torch during repairs.

What drives the value of a Zambian emerald

Colour leads. The market pays most for a vivid, saturated bluish green of medium tone with high transparency, and marks down stones that are dark, greyish or inky. Because Zambian stones can be very clean, clarity carries more weight than it does for Colombian emerald; a Zambian stone with an eye-visible jardin competes with cleaner stones from the same source and must be priced accordingly.

The enhancement grade is the second factor. A Zambian emerald graded none or insignificant is worth meaningfully more than the same stone graded minor, and far more than moderate. Oil is preferred to resin. Origin matters, but in the opposite direction from Colombia: Zambian origin is not itself a premium, and a Zambian stone is usually valued below a Colombian stone of equal colour and grade. The gap narrows for very clean, very saturated Zambian material and widens for ordinary goods.

Size counts, though clean Zambian stones above a few carats are less rare than clean Colombian ones. Cut quality, the absence of a window, an attractive outline and a report from a laboratory the trade accepts complete the valuation. Synthetic emerald and dyed or heavily resin-filled stones are identified by laboratories and sit in a separate, lower market.

The Zambian emerald market and supply

Zambian emerald was known from the 1920s but became a significant commercial source only in the second half of the twentieth century. The modern market dates from 2008, when Gemfields acquired a majority stake in Kagem and began selling rough through scheduled auctions to cutters, most of them in India. That system gave the trade something Colombia had rarely offered: a predictable flow of graded rough at regular intervals, with revenues recorded and repatriated to Zambia.

The result has been a steady supply of calibrated goods, matched pairs and layouts in Zambian emerald, and a growing acceptance of the bluish green look among designers who once asked only for Colombian. Marketing by Gemfields and by jewellery houses using Zambian stones has raised the profile of the source, and the cleaner crystals suit modern tastes for transparent, lively stones.

Large crystals continue to emerge from Kagem and are reported in the trade press when they do; a few have been given names and sold as single lots. For the trade, Zambia is now the first place to look for clean emerald in quantity, with Colombia reserved for the warm, glowing stones at the top of the market.

Buying Zambian emeralds from Byrex Gems

A Toronto house for the jewellery trade since 1988, Byrex Gems counts more than seven thousand jewellers, designers and dealers among its customers. Many of our Zambian emeralds are accompanied by reports from GRS, SSEF, Gübelin, GIA and other leading laboratories, and each is filmed in our office so that you can judge it before it travels.

Prices are shown to approved trade buyers. For anything else, WhatsApp +1 (437) 450-3786 reaches us within hours, and info@byrex.com is answered the same day, seven days a week. What is listed is a part of what we hold: more Zambian emeralds are kept in the vault, and what we do not hold ourselves we can source through our offices worldwide. Viewings are by appointment in Toronto, Hong Kong, Bangkok and Dubai.

Zambian Emeralds: questions buyers ask

Where can I buy Zambian emeralds in Toronto?

What is the difference between Zambian and Colombian emeralds?

Zambian emeralds contain more iron, which gives a cooler, slightly bluish green and a crisper look; Colombian stones are warmer with a soft glow. Zambian rough is often cleaner and takes less enhancement. Laboratories separate them by chemistry, spectra and inclusions.

Are Zambian emeralds oiled or clarity enhanced?

Often lightly, and sometimes not at all. Many Zambian stones are graded none, insignificant or minor, in the issuing laboratory's own words: GIA uses none, minor, moderate or significant; SSEF and Gübelin also use insignificant; AGL grades from faint to prominent. Any filling must be disclosed.

Which reports does Byrex supply with Zambian emeralds?

GIA, Gübelin, SSEF, AGL or GRS, depending on the stone. The report states species, an origin opinion and the enhancement grade; the number and wording are shown on each stone page and the original travels with the stone.

Is a Zambian emerald worth less than a Colombian one?

Usually, at equal colour and grade, because the market pays a premium for Colombian origin. A clean, vivid Zambian stone with little enhancement can nonetheless outrank a pale or heavily enhanced Colombian stone. Compare the stones and the reports, not only the countries.

Can Byrex supply calibrated Zambian emeralds or pairs?

Yes. The steady supply and consistent colour of Zambian material make calibrated sizes, pairs and layouts more achievable than in Colombian emerald. Byrex supplies what it holds and sources the rest through its offices and partners for a specified size, shape and colour.

Do Zambian emeralds change colour under incandescent light?

Good ones hold their bluish green. Weaker or darker stones can look greyish or inky under a warm lamp, so judge a Zambian emerald in daylight-equivalent light and in the light your client will wear it in before deciding.

Does Byrex sell Zambian emeralds to private clients?

Byrex sells to the jewellery trade and receives private clients by appointment at its Toronto office. Prices are visible only to approved trade buyers who sign in. Private clients can view stones in person and have them set through their jeweller or through Byrex.

Can I view Zambian emeralds in Toronto?

Yes, by appointment at 27 Queen Street East, Suite 407, Toronto. Each emerald is filmed unedited so what you see online matches the tray, and the laboratory report is available to examine beside the stone.

Byrex Gems, 27 Queen Street East, Suite 407, Toronto. Coloured gemstones and natural fancy colour diamonds for the trade since 1988, and for private clients by appointment.

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