Real Crystal vs Glass Bead: Are Crystals from Temu Real or Fake?

The supplied evidence does not establish whether a particular crystal bracelet from Temu is real or fake. Governing rule: ask for material evidence rather than treating price, appearance, or a home test as proof.

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Last updated: September 26, 2026

By Mara Ellison · Founding Editor, Dusk & Relic Journal

What does the evidence say about crystal versus glass?

Glass is a documented gemstone substitute, but that does not identify the material in a particular bracelet. The USGS lists glass, plastics, and other materials as substitutes for natural gemstones. It also reports that simulants are frequently substituted for natural gemstones; this is not a finding about a specific marketplace or seller.

Use the governing rule when shopping: ask for the specific mineral name and any treatment disclosures rather than accepting a generic “crystal” label.

Clear quartz vs citrine: which is better for your bracelet?

Verdict: neither has a hardness advantage in the supplied evidence; heat exposure is an additional consideration for heat-treated citrine.

Criterion	Clear quartz	Citrine
Mohs hardness	7	7
Specific gravity	2.651	2.651
Heat information supplied	No heat guidance in these excerpts	Heat-treated stones may fade when exposed to heat

The International Gem Society gives clear quartz a Mohs hardness of 7 and specific gravity of 2.651. Its citrine reference gives the same hardness and specific gravity, and warns that heat-treated stones may fade with heat exposure.

These are reference properties, not measurements of the bracelet you are considering. Do not turn the shared hardness rating into a guarantee against breakage or a cleaning recommendation.

What are the exceptions and limits to the rule?

A disclosed mineral name is a starting point, not independent verification, and the supplied properties do not support a universal home test.

Clear quartz can contain color zoning, two- and three-phase inclusions, and negative crystals, according to the IGS. This list does not establish that visible inclusions prove authenticity or cannot be imitated in glass. Nor do these excerpts establish a cold-touch test, flame test, or safe scratch test for a finished bracelet.

For related reading, see our guides to identifying real rutilated quartz, dyed versus natural red agate, and checks for dyed versus natural amethyst. Keep the governing rule in mind: use those questions to request evidence, not to turn a visual clue into proof.

Which listed bracelets match these choices?

Choose by the listed materials and current price, not by an assumed price threshold for authenticity.

The Frost & Fortune (10 mm, $105) lists green phantom quartz, clear quartz, and gold-plated hardware. The Dusk & Citrine (10–11.5 mm, $95) lists amethyst, citrine, phantom quartz, and gold-plated hardware. These are mixed-material options, not pure strands of the comparison stones; the supplied listing does not specify whether the citrine is heat-treated.

Choose clear quartz if that is the material you want included, with Frost & Fortune as the matching listed bracelet; choose citrine if you want citrine included, with Dusk & Citrine as the matching listed bracelet.

FAQ

Are crystals from Temu real?

The supplied evidence cannot determine the material in a particular Temu bracelet. The USGS reports that simulants are frequently substituted for natural gemstones, but it does not evaluate these listings.

Can I use a lighter to test if a crystal is real?

Do not use a lighter as an authenticity test. The supplied evidence does not validate that method, and the IGS warns that heat-treated citrine may fade when exposed to heat.

Does the scratch test damage the bead?

The supplied evidence does not establish that scratch-testing a finished bead is safe. Clear quartz has a Mohs hardness of 7, but that rating alone is not a guarantee against damage.

Can air bubbles inside a bead prove it is glass?

The supplied evidence does not support that conclusion. Clear quartz can contain two- and three-phase inclusions, but the excerpts do not provide a visual test for distinguishing them from features in glass.