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CC/08-01Saturday 1 August 2026The Diamonds Desk · Lead Story · Diamonds Desk
Lead Story · Diamonds DeskDiamonds · CC/08-01

Russia bans the word: synthetics lose diamond, carat and natural

Government Resolution No. 657 of May 30 takes effect on September 1. Tags must say synthetic, weight must be shown in grams rather than carats, and precious, natural, real and eco-friendly are struck from the vocabulary.

By The Diamonds Desk1 August 2026Brief 45 sec · Full read 3 min
PLATE IKey figures
What a synthetic stone may be called in Russia
Synthetic / Synth.required
Diamond, And Derivativesbanned
Natural, Real, Preciousbanned
Eco-Friendly, Minedbanned
Carat Weightbanned
Source Resolution No. 657
What changed

Russia has given the synthetic stone trade thirty-one days to rewrite its labels. Government Resolution No. 657, signed on May 30 and effective September 1, prohibits the word diamond and all its derivatives in any consumer-facing description of man-made material sold in Russia.

What it means · The Desk’s View

The adjectives were always going to go. Eco-friendly and precious were marketing borrowed against a definition, and every regulator that has looked at them has taken them back.

What matters here is that the carat rule is the one that travels, because a unit of measure is harder to lobby away than an adjective, and because a trade that cannot quote carats cannot run a price list. Any grower selling into a market with a Russian-style rulebook has to rebuild its catalogue, its comparison charts and its e-commerce filters around grams.

The trade should read September 1 as a rehearsal, not an outlier.

The article3 sections · 357 words
Table I · What a synthetic stone may be called in Russia
Figure
Synthetic / Synth.required
Diamond, And Derivativesbanned
Natural, Real, Preciousbanned
Eco-Friendly, Minedbanned
Carat Weightbanned
Consumer-facing description rules, in force September 1, 2026. Carat Capital graphics desk.  CC/2026/157

IThirty-one days to relabel

The tag must instead carry the word synthetic, or the abbreviation Synth., and the approved full term is cut synthetic diamond. The rule covers physical tags, showcase cards and online listings alike, so a Russian retailer cannot describe on a website what it may not print in a store.

The banned vocabulary runs well past the noun. Precious, real, genuine, natural, mined, mineral and eco-friendly are struck, along with similar expressions and their derivatives, from every piece of information a buyer sees. The colour and clarity descriptors borrowed from natural grading go with them.

What remains is a product that may be sold, may be set in gold, and may not be marketed with any of the language that has carried it for a decade. The finance ministry has not restricted supply. It has restricted the sentence.

IIGrams, not carats

The weight rule is the sharpest instrument in the document. Synthetic stones must be described in grams, and carat weight is prohibited outright. A one-carat lab-grown stone sold in Russia after September 1 is a 0.2 gram stone.

Every reference point a shopper uses to compare a grown stone against a mined one, and every marketing claim built on carats per dollar, dies with that substitution.

Alongside it sits a full tagging schedule: product name, maker or importer, country of origin, model number, total weight, metal and fineness, stone particulars, and a unique identification number matching a two-dimensional barcode. Alexey Moiseev, the deputy finance minister, said the aim is to "improve transparency in the jewelry display and protect consumers".

IIIA template, not an outlier

Russia is not acting alone, and it is not acting on a large market. CIBJO is expected to strike laboratory-grown and laboratory-created from its Blue Book at a congress on September 4 and mandate the single word synthetic, and India, the African producers and the GIA have all moved the same way this year.

Russia's contribution is that it wrote the rules down and attached a date. The ministry's own framing notes wholesale synthetic prices below $70 for 0.2 grams in some categories, which is the commercial fact the language rules are built around. A product at that price does not need a defence in Moscow.

It needs one wherever the natural trade still competes for the same shopper.

The depthMethod, sources, corrections · open what you need
01Method · the desk’s arithmetic+

Consumer-facing description rules, in force September 1, 2026.

02Sources4 documents
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