KhyatiGems knowledge library
Citrine
Citrine is yellow to orange quartz. Its relationship to amethyst is mineralogical, rather than a statement that every yellow quartz crystal formed with its present colour.
AI-assisted source review · 2026-10-16. No named gemologist review is claimed. How this reference was reviewed.
Paweł Maliszczak [hardleo.com] · CC BY-SA 4.0 · Source · CC BY-SA 4.0
| Material classification | Quartz |
|---|---|
| Mohs hardness (reference) | 7 |
Identity and appearance
Citrine is yellow to orange quartz. Its relationship to amethyst is mineralogical, rather than a statement that every yellow quartz crystal formed with its present colour.
Much commercial citrine is produced by heating amethyst. A natural quartz identification and an untreated colour claim are different statements.
Care and handling
Request a written colour-treatment description, especially when comparing a pale yellow stone with strongly orange material.
Questions for an individual stone
Keep the material name, natural or laboratory-grown origin, treatment description and any report together. Ask which conclusions were established by examination and which remain unknown. The reference properties here describe a material; they are not measurements of a stone offered for sale.
If a description and report disagree, request clarification before making a decision. Photographs are useful for discussing appearance, but cannot authenticate a specimen. Keep care instructions with the item so that a jeweller or repairer can assess it before work begins.
Comparison and interpretation
The useful comparison is with amethyst and other yellow materials, not with a generic category of precious yellow stones. Quartz and topaz are different minerals even when both look yellow. A seller should state the material first and describe colour and treatment separately. Ask whether the colour description concerns the present appearance or claims an untreated history. An attractive commercial name is not a substitute for that distinction. Compare like-sized stones in the same lighting before drawing conclusions about saturation or apparent brightness.
Choosing and documenting a piece
A photograph of a citrine crystal should not be taken as evidence that all citrine reaches the market in that form or colour. Rough material can have uneven colour, broken surfaces and opaque areas that are not represented in a finished gem. For jewellery, discuss how much of the surface will be exposed and whether the stone has fractures or coatings. Keep the written description with the item. When evidence about colour treatment is unavailable, record it as unknown rather than converting a quartz identification into an untreated claim.
Before making a decision
For citrine, ask the seller to identify the actual item, state what remains unknown and explain the scope of any report. Keep photographs, measurements and written disclosures together. If an answer matters to your decision, obtain it before commissioning a setting or arranging a repair.
Sources and further reading
- GIA Citrine reference Checked 2026-10-16