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Natural Orange Diamonds

A natural orange diamond is a diamond whose body colour reads as orange, graded as a fancy colour at any strength, with colour that formed in the earth. Most oranges carry a yellow or brown modifier; a pure orange with no modifier is one of the rarest descriptions GIA writes. Byrex Gems offers natural orange diamonds to the trade from Toronto, most with GIA reports and each filmed unedited, with prices shown to approved buyers and viewings by appointment.

Where to buy natural orange diamonds in Toronto

Byrex Gems lists 56 natural orange diamonds online today. 54 of them come with a report from laboratories including GIA and HRD. 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.

What is a natural orange diamond?

Orange sits between yellow and red on the hue circle, and in diamond it is almost always pulled toward one neighbour or the other. A stone with a yellow cast is a yellowish orange or a yellow-orange; a stone with a brown cast is a brownish orange; a stone with red is a reddish orange, which is rarer still. The pure orange in the middle, with no modifier, is seen so seldom that the trade treats it as a separate category.

The cause of the colour is not fully settled. Orange diamonds are usually nitrogen-bearing type Ia stones, and their colour is linked to an absorption feature that is not the one responsible for ordinary yellow; plastic deformation, the cause of pink and brown, appears to play a part in many of them as well. Gemologists have described the mechanism in different ways, and GIA itself has noted that orange is among the less understood diamond colours.

Sources are scattered. South Africa has produced most of the important oranges, Argyle produced brownish oranges alongside its browns, and stones have come from Brazil, Russia and central Africa. There is no steady mine for orange.

How GIA grades orange diamonds

GIA grades orange on the fancy scale from Faint through Light, Fancy Light, Fancy, Fancy Intense and Fancy Vivid, with Fancy Deep and Fancy Dark for darker tones. Orange is a fancy colour from the first step and never receives a D to Z letter grade. The hue line usually carries a modifier, and the last hue named is dominant: yellowish orange and yellow-orange are orange stones with a yellow cast, brownish orange and brown-orange are orange stones with a brown cast, and orangy yellow or orange-yellow are yellow stones and belong on the yellow page.

The difference between these wordings is the whole value of the stone, so the exact report line matters more here than in any hue except pink. A Fancy Vivid Orange with no modifier is the wording every orange buyer is looking for and the one least often written.

The report states colour origin. Orange can be produced by irradiation and annealing, and HPHT treatment can shift some brown stones toward orange-yellow, so the natural origin line should be read. Laboratories detect treatment by inclusions, spectra and trace-element chemistry, and any treatment must be disclosed at every sale.

What a jeweller should check before buying

Verify the report with GIA, match the inscription and read the hue line word by word. Then judge the colour as it will arrive. Orange is graded viewed from the top, and the cut decides how much of the colour the eye receives: radiant, cushion and pear shapes hold orange, while round brilliants dilute it. Ask whether the stone reads orange in daylight or slips toward yellow or brown; a brownish orange can look like a cognac brown under warm shop lighting, and a yellowish orange can look like a deep yellow under cool light.

Tone matters. A Fancy Deep orange is strong but shadowed, and in a small stone the colour can read as brown; a Fancy Intense of lighter tone may look brighter in a ring. Clarity is secondary to colour.

Pairs in orange are difficult, since two stones of the same grade can carry different modifiers, and matching is done by eye on hue and tone before size. For setting, yellow gold deepens a yellowish orange and can flatter a brownish one, while white metal makes a pure or reddish orange read sharp and clean.

What drives the value of an orange diamond

Purity of hue sets the first tier. A pure orange, with no modifier on the report, is valued far above any modified orange of the same grade, and the gap widens as saturation rises. Below pure orange the hierarchy is settled by the modifier: reddish orange is prized when it appears, yellowish orange and yellow-orange are the working market and are often warm and attractive, and brownish orange sits lowest because brown dulls the colour.

Saturation follows the usual order. Fancy Vivid and Fancy Intense orange are scarce in any modifier; Fancy and Fancy Light stones are more available, and in the lighter grades the colour can be hard to distinguish from a strong yellow, which limits their premium.

Size multiplies rarity, and a pure orange above a carat is an auction stone. Clarity and cut quality refine the price within a grade, and a radiant that holds colour will sell ahead of a round that drops it. Because orange is bought mostly by designers and collectors who want a colour they cannot find elsewhere, a stone with an unusual and even hue finds its buyer quickly. Byrex shows full trade prices to approved accounts, offers larger oranges on request and does not publish prices.

The Orange and the rarity of pure orange

The best known orange diamond is called simply The Orange, a pear-shaped Fancy Vivid orange of 14.82 carats sold at auction in Geneva in 2013, where it became the largest Fancy Vivid orange ever offered at auction. Its report carried no modifier, and that single word, orange, with nothing before it, is what made the stone remarkable. Few other oranges are named at all; most oranges in the trade are under one carat and carry a yellow or brown modifier.

The rarity is structural rather than a matter of fashion. The hue circle gives orange a narrow band between yellow and red, and the defects that produce it in diamond nearly always come with the nitrogen that adds yellow or the deformation that adds brown. A stone has to be strongly coloured and unusually balanced to be graded pure, and such stones are a small fraction of an already small category.

For the trade the result is a two-tier market: a steady, modest supply of yellowish and brownish oranges that make distinctive jewellery, and a handful of pure stones each year that are sold on sight. Byrex works in both, and the report wording on each stone page says which tier a stone belongs to.

Buying orange diamonds 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 orange diamonds are accompanied by reports from 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 orange diamonds 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.

Natural Orange Diamonds: questions buyers ask

Where can I buy natural orange diamonds in Toronto?

How rare is a pure orange diamond?

Very rare. Most orange diamonds carry a yellow or brown modifier on the GIA report, and a stone graded simply orange, with no modifier, is among the least common descriptions GIA writes. Such stones are usually sold on sight.

What is the difference between orange-yellow and yellow-orange?

The last hue named is dominant. An orange-yellow is a yellow diamond with a strong orange component; a yellow-orange is an orange diamond with a strong yellow component. The second is the rarer and more valuable wording.

What causes the orange colour in a diamond?

It is not fully settled. Orange diamonds are usually nitrogen-bearing, and their colour is linked to an absorption feature different from ordinary yellow, with plastic deformation contributing in many stones. The colour is natural and stable.

Are natural orange diamonds ever treated?

Natural orange diamonds are not. Orange can be produced by irradiation and annealing, and HPHT treatment can shift some browns toward orange-yellow, so treatment must be disclosed and the colour origin line on a GIA report should be read.

Do Byrex orange diamonds have GIA reports?

Most do. GIA grades the majority of our orange diamonds, and the exact hue wording from the report, including any modifier, is quoted on each stone page. Any stone with another laboratory's report is identified as such.

Does Byrex sell orange diamonds to private clients?

Yes. Byrex sells first to jewellers and designers, but private clients are welcome by appointment at 27 Queen Street East in Toronto, where an orange can be seen in daylight and reserved for a jeweller to set.

Can I view orange diamonds in Toronto?

Yes. Viewings are by appointment at 27 Queen Street East, Suite 407, Toronto. Orange shifts with lighting more than most hues, so seeing a stone under daylight-equivalent and warm light in person is worthwhile.

Which cut shows orange best?

Radiant, cushion and pear shapes. Their facet patterns keep light inside the stone and deepen the colour, while round brilliants return white light and dilute it. Most strong oranges are cut in these shapes for that reason.

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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