The Casta Diva Journal
Practical English editions on diamonds, coloured gemstones and jewellery-making. New entries follow our publication calendar.
Polish and symmetry on a diamond report
Two finish assessments that belong beside, not instead of, the wider cut evaluation.
Read the articleDiamond shape or cut grade?
The outline is not a quality score.
Read the articleEye-clean and clarity grade are not the same
A laboratory grade and an everyday viewing judgement answer different questions.
Read the articleDiamond fluorescence: a detail to inspect
Read the report entry and assess the individual appearance.
Read the articleChoosing the centre stone for an engagement ring
Balance silhouette, dimensions and daily wear before committing to a design.
Read the articleWhat really determines a diamond's price?
Weight is one part of a specification, not the whole value proposition.
Read the articleHow to verify a diamond report: IGI and GIA
A report number is the beginning of verification. Match the official record, measurements and physical stone before payment.
Read the articleA practical glossary of lab-grown diamond terms
Material identity, origin and imitation describe different things.
Read the articleWhat does a 1 carat diamond cost in Georgia?
One carat is a weight, not a single product with one market price.
Read the articleCVD or HPHT: how to compare lab-grown diamonds
Growth method describes a process, not a complete quality grade.
Read the articleHow to compare two diamond quotations fairly
Make origin, specifications and commercial scope match before comparing totals.
Read the articleKeeping a jeweller's repeat orders consistent
A retained specification is more dependable than ordering the same again.
Read the articleA simple comparison sheet for three diamonds
Make the differences visible before choosing the cheapest or the highest grade.
Read the articleWhy a coloured stone needs more than one light
Reduce the uncertainty of choosing a gemstone from a screen.
Read the articleOval diamonds: what length-to-width ratio changes
The same carat weight can produce a broader or a more elongated silhouette.
Read the articleHow to write a precise melee order brief
Diameter, tolerance, quality range and quantity make an order repeatable.
Read the articleLab-grown, synthetic or imitation diamond?
These terms do not all describe the same material. Clear naming starts with identity and origin.
Read the articleFive fields to check on an IGI report
Report number, measurements, colour, clarity and comments belong in your pre-order check.
Read the articleCarats or millimetres: which describes size?
Carat measures mass; length and width describe the dimensions you see from above.
Read the articleWhy we compare D, E and F separately
All three are colourless grades. Exact specifications still matter when comparing quotations.
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