- Jewelry Identifier
- Gemstones
- Citrine
* quartz gemstone
Citrine: identification, value, and how to spot a fake
Yellow variety of quartz. Most commercial citrine is heat-treated amethyst. Natural citrine is paler and slightly smoky. Affordable and durable; common in birthstone jewelry.
Published May 30, 2026
Quick facts
- Mineral family
- quartz
- Chemical formula
- SiO2 (Fe impurity)
- Mohs hardness
- 7
- Refractive index
- 1.544–1.553
- Specific gravity
- 2.65
- Crystal system
- trigonal
- Luster
- vitreous
- Birthstone month
- November
Colors
Citrine is found in yellow, yellow-orange, brown-orange. The body color, its saturation, and how evenly it spreads through the stone are among the strongest drivers of value.
How to tell real from imitation
No single test settles it, but a few grounded checks quickly narrow things down for Citrine. Hardness, brilliance, and the list of stones it is commonly confused with all give you something concrete to look for.
- Scratch resistance: genuine Citrine sits at Mohs 7, so it should resist scratching from softer materials — a stone that mars far too easily is suspect.
- Brilliance & luster: Citrine shows a vitreous luster and a refractive index of 1.544–1.553; imitations often look glassier or flatter under the same light.
- Density: a real Citrine has a specific gravity near 2.65, so it feels heavier or lighter in the hand than many look-alikes of the same size.
- Commonly imitated by: yellow topaz, yellow sapphire. If a deal looks too good, suspect one of these substitutes first.
- Fast first read: photograph the stone in the Jewelry Identifier app to estimate the gemstone and its likely value range, then confirm anything important with a gemological lab.
Common treatments
- heat treatment (most market citrine is heated amethyst)
Treatments are routine for many Citrine stones, but they materially affect value and should always be disclosed — an untreated, lab-certified stone commands a clear premium over a treated one.
What to know about Citrine
Yellow variety of quartz. Most commercial citrine is heat-treated amethyst. Natural citrine is paler and slightly smoky. Affordable and durable; common in birthstone jewelry.
Sources
* Frequently asked
FAQ
- Q. Is Citrine hard enough for everyday rings?
- A. Mostly. At a Mohs hardness of 7, Citrine stands up to routine wear, though sharp knocks and abrasive dust can still mar it over years of daily use.
- Q. How can I tell Citrine from yellow topaz?
- A. Citrine and yellow topaz can look alike to the naked eye, but they differ in measurable properties — refractive index (1.544–1.553 for Citrine), specific gravity (2.65), and hardness (Mohs 7). A gemologist confirms the distinction with a refractometer and loupe; the Jewelry Identifier app gives a fast first read from a photo.
- Q. Does Citrine come in colors other than yellow?
- A. Yes. Citrine occurs in yellow, yellow-orange, brown-orange. Color is driven by trace elements and treatment history, and it is one of the biggest factors in a stone's value.
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