Lemon Quartz
Silicon dioxide (SiO2)
A vivid greenish-yellow quartz, usually heat-treated or irradiated, prized for its clean clarity and bright lemon color.
- Mohs hardness
- 7
- Color
- Bright greenish-yellow to lemon yellow
- Type
- crystal
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Overview
Lemon quartz is a variety of macrocrystalline quartz (silicon dioxide) distinguished by its bright, slightly greenish-yellow color, more acidic and zesty than the warmer orange-gold of citrine. It is also sold under the trade name 'green gold' or oro verde quartz.
Most lemon quartz on the market is produced by treating natural quartz: a combination of irradiation and gentle heating develops the stable, uniform lemon hue. The treatment is permanent and widely accepted in the trade.
With excellent clarity, durability, and affordability, lemon quartz is a popular choice for large, eye-clean faceted stones in fashion and statement jewelry.
Formation & geology
The base material is ordinary quartz, which crystallizes from silica-rich fluids in a vast range of geological settings, including pegmatites, hydrothermal veins, and cavities in igneous and metamorphic rocks. Quartz is one of the most abundant minerals in the Earth's crust.
The characteristic lemon color is generally not natural in such intensity. Pale or colorless quartz is irradiated to create color centers and then mildly heated to stabilize the bright greenish-yellow tone. The result is a durable, light-stable color.
Brazil is the dominant source of the clean quartz used for lemon quartz, with additional material from other major quartz-producing regions.
How to identify it
Look for a transparent, eye-clean stone with a uniform bright greenish-yellow to lemon color and vitreous luster. Hardness is 7, with no cleavage and a conchoidal fracture; streak is white.
Quartz shows a refractive index and specific gravity lower than citrine-colored topaz or yellow sapphire, helping separate look-alikes. Compared with citrine, lemon quartz is cooler, more lime-tinged, and often more saturated and even in color.
Natural yellow gems like yellow sapphire (harder, 9) and yellow topaz (cleavage, higher density) can be ruled out by hardness and optical tests. Glass imitations may show bubbles and lack quartz's properties.
Uses & significance
Lemon quartz is almost entirely a gemstone used in jewelry. Its clarity allows large faceted stones in rings, pendants, and earrings at modest cost, making it popular for bold cocktail pieces and designer collections.
Its hardness of 7 gives reasonable durability for everyday wear, though like all quartz it can be scratched by harder gems and should be protected from sharp blows.
In crystal-healing circles, lemon quartz is associated with optimism, mental clarity, focus, and abundance, often linked to the solar plexus chakra. These are metaphysical beliefs rather than scientifically supported facts.
Frequently asked questions
Is lemon quartz natural?
The quartz itself is natural, but the bright lemon color is almost always produced by irradiation and heat treatment. The treatment is stable and standard in the trade.
What is the difference between lemon quartz and citrine?
Lemon quartz is a cooler, greenish-yellow color, while citrine is a warmer orange-gold to amber. Both are colored varieties of quartz.
Will lemon quartz fade in sunlight?
Properly treated lemon quartz is generally color-stable, but prolonged intense sun exposure is best avoided as a precaution for any treated quartz.
Is lemon quartz the same as green gold quartz?
Yes. 'Green gold' and oro verde are trade names commonly used for the same greenish-yellow treated quartz sold as lemon quartz.
Lemon Quartz guides
In-depth guides for identifying, valuing, and understanding Lemon Quartz.
Lemon Quartz identified by the community
Real specimens identified with Rock Identifier.
