What does natural colour mean?
A diamond can be natural while its colour has been changed by treatment. Our product policy requires both a natural diamond and natural colour. Ask for the available evidence for the individual stone; colour appearance in a photograph is not proof of origin.
What should I request before choosing a diamond?
Ask for current photographs and video, carat weight, millimetre measurements, shape and cutting style, colour and clarity information, condition and any laboratory report. For a parcel, confirm the size tolerance, quantity, matching standard and how the description was determined.
Are all diamonds accompanied by the same report?
No. Some are accompanied by a full grading report; others have an identification and colour-origin report, or are offered with a supplier’s description. GIA’s Colored Diamond Grading Report includes a quality assessment and clarity information. Its Colored Diamond Identification and Origin Report focuses on colour origin and, for loose stones, colour grade; it does not provide a full clarity grade.
Does “origin” always mean the mine or country?
No. Colour origin describes whether the colour is natural or treated. Geographic origin is a different question. A mine or country claim needs appropriate supporting records. For an Argyle-related enquiry, request the specific provenance documentation available rather than relying on pink colour or a trade description.
How should I read colour descriptions?
Use the exact wording of the available report for a graded diamond. A modifying hue is part of the colour description, and familiar expressions such as canary, champagne or rose pink may be descriptive trade terms. Ask to see the diamond under suitable lighting instead of judging only from a colour name.
Is carat weight the same as visible size?
Carat describes weight. Two stones of the same weight may have different face-up dimensions because of their shape and proportions. For a setting, a matching pair or calibrated melee, request the actual millimetre measurements and acceptable tolerances.
Can a home test prove a diamond is natural?
A flashlight, water, fog or heat test cannot reliably establish natural diamond identity or natural colour origin. Heating a stone or suddenly cooling it can cause damage. Consult a trained gemologist or an independent laboratory for appropriate testing.
How should I care for diamond jewellery?
Protect jewellery from hard impacts and have settings checked when needed. Cleaning depends on the entire piece, including other gemstones and its construction. Seek professional advice before steam or ultrasonic cleaning; these methods can loosen stones or be unsuitable for certain gems. Do not use fire, abrupt temperature changes or household chemicals to test a stone.
Do you sell treated or laboratory-grown diamonds?
Our website offers natural diamonds with natural colour and natural untreated gemstones. Colour-treated, irradiated, heated, clarity-enhanced and laboratory-grown products are not part of this offering.
Why is the price on request?
The quotation depends on the particular stone or parcel, its characteristics, current availability and, for jewellery, the metal and work involved. Contact us for a current quotation and its validity period.