Three different questions
A natural material can be heated, dyed, waxed or impregnated — treatment that should be disclosed but is not automatically fraud. An imitation is another material posing as a given stone: glass, plastic, ceramic or a cheaper mineral. Finally, trade names can be broad: “jade” covers jadeite and nephrite, and “labradorite” is a name for a compositional range of plagioclase, not a separate species. GIA describes treatment of citrine and jadeite and imitations of many stones. [18] [30] [72] [32] [70]
Treatment: what changes colour and durability
According to GIA a large share of the citrine on the market is heated amethyst. Lapis lazuli can be dyed, waxed or oiled — GIA describes these enhancements, and it is worth asking about them when buying. Jadeite can be treated, and treatments also affect how it should be cared for. [18] [75] [30] [72]
Practitioners add their own pointers: according to The Crystal Council and Crystal Vaults natural citrine is usually pale and an intense orange tone suggests treatment, while smoky quartz is sometimes produced by artificially irradiating colourless quartz and is then usually very dark and less transparent. [48] [131] [49] [132]
See in Avonoria: Citrine · Lapis lazuli · Jadeite · Smoky quartz
Imitations and synthetics
Amethyst can be synthetic — laboratory-grown quartz has the same composition and can look identical to natural material, so only gemmological testing tells them apart. Glass imitates amethyst, aquamarine and malachite; lapis lazuli is imitated by glass, plastic and ceramic. Magnetic ferrites are also sold as “hematite” — GIA described magnetic hematite imitations in jewellery as early as 2000. Artificial glass with “snowflake”-like inclusions can imitate snowflake obsidian. [74] [70] [76] [73] [78]
Pairs that are easily confused
Lapis lazuli and sodalite: both are blue and can look alike — lapis is a rock that can contain sodalite-group minerals, while sodalite is a separate mineral; certainty requires testing. Rock crystal and calcite: calcite is much softer and has perfect cleavage. Citrine and topaz: similar colour, different minerals. Labradorite and moonstone: both are feldspars with an optical effect — labradorite flashes with colour, moonstone shows a bluish or whitish glow, and so-called rainbow moonstone is sometimes in fact labradorite. [20] [77] [4] [1] [62] [65] [71] [32]
Black tourmaline (schorl), dravite and obsidian: black colour does not settle the tourmaline species, and obsidian is glass without a crystal structure. Smoky quartz and obsidian: quartz forms crystals, obsidian has a conchoidal fracture and glassy lustre. Pyrite, gold and chalcopyrite: pyrite is harder than gold and gives a greenish-black streak, chalcopyrite has a brassier, often iridescent tone. Amazonite, turquoise and jadeite: the green can be similar, but they are three different minerals. Selenite and satin spar: both are gypsum — selenite transparent and bladed, satin spar fibrous and silky; the latter is sometimes sold as “selenite”. [2] [63] [79] [1] [9] [64] [68] [11] [69] [7] [10] [33]
See in Avonoria: Lapis lazuli · Sodalite · Labradorite · Moonstone · Pyrite · Selenite
What you can check without damage
Compare the specimen with its card in neutral light: colour, lustre, crystal shape, visible cleavage planes or fracture, inclusions. Ask the seller for the exact material name, origin and disclosed treatment; keep the label and receipt. Do not scratch, break, heat or acid-test — it destroys the specimen and can be dangerous. “Coolness in the hand”, weight in the hand or a magnet (for hematite) may offer a hint, but they are not proof. [70] [73]
See in Avonoria: Crystal atlas
When a laboratory is needed
Appearance, colour and basic properties can help narrow down an identification, but they do not always establish the type or authenticity. GIA describes, for example, Raman spectroscopy for distinguishing jadeite from nephrite, and telling natural from synthetic amethyst requires gemmological testing. For a more expensive purchase, it is worth asking for an independent report. [72] [74]
And meaning in lithotherapy?
For practitioners authenticity matters within the tradition too: The Crystal Council advises paying attention to whom you buy natural smoky quartz and citrine from, and Crystal Vaults stresses that it is natural citrine that does not hold heavy energy. In the tradition, then, attributions concern a specific, natural material — which is why it is worth knowing what you hold in your hand. [49] [48] [131]
See in Avonoria: How to choose a crystal
Read next
Mineral, crystal, rock and gemstoneHow to choose a crystalCleaning and careMineral safetyCrystal atlas →Guide sources
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Commercial practitioner source: documents beliefs, not medical evidence. The site sells crystals, so we give a bibliographic description without an active link; the full address is kept in Avonoria’s source documentation.
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