Weight test vs inclusion check: which is better for telling if my bracelet stone is resin or epoxy with dye?

Neither the weight (specific gravity) test nor the inclusion check is established by the supplied evidence as better for identifying resin or epoxy with dye. The sources provide specific gravity references and documented natural inclusions for clear quartz, but no resin or epoxy comparison figures or dye-testing method.

French Spring · $75. View this piece’s details →

Last updated: October 3, 2026

By Mara Ellison · Founding Editor, Dusk & Relic Journal

How do the weight test and the inclusion check compare?

Criterion	Weight (specific gravity) test	Inclusion check
Clear quartz reference	Specific gravity: 2.651, described by IGS as very constant	Documented natural features include color zoning, two- and three-phase inclusions, and negative crystals
What the supplied evidence supports	A published reference for clear quartz, not a general target for every quartz variety	A list of features natural clear quartz can contain, not a description of every bead
Identifies resin or epoxy?	No resin or epoxy comparison figures are supplied	No validated resin or epoxy identification method is supplied
Detects dye?	No dye-testing method is supplied	No dye-testing method is supplied

The specific gravity reference gives a number; the inclusion list describes natural features. Neither source establishes a standalone answer to the resin question.

What does the weight test actually compare?

The relevant published figure depends on the material being considered. The International Gem Society lists clear quartz at 2.651 and describes that specific gravity as very constant. IGS also lists citrine at 2.651.

These are specific gravity references, not bracelet-weight targets. The supplied sources provide neither a measuring procedure nor specific gravity figures for resin or epoxy, so they do not establish how to identify those substitutes from a reading.

The clear-quartz figure should not be extended to every material with “quartz” in its name. The supplied evidence gives no separate specific gravity figures for rutilated, hematoid, smoky, or phantom quartz.

What does the inclusion check look for in natural clear quartz?

The inclusion check concerns features that the International Gem Society records in natural clear quartz, or rock crystal: color zoning, two- and three-phase inclusions, and negative crystals.

That list describes what natural clear quartz can contain. It does not say that every clear quartz bead shows these features, so the absence of visible inclusions is not established here as proof of resin.

Nor does the list establish that observing a feature is sufficient to authenticate a bead. For a related appearance question, see this guide to an amazonite bracelet that doesn't look like amazonite.

Can either check tell you whether a stone is dyed?

The supplied sources do not establish either check as a dye test. The “with dye” part of the question remains unanswered by these excerpts.

One treatment fact is documented: IGS notes that heat-treated citrine may fade when exposed to heat. That caution does not identify a faded bead as resin or establish that it was dyed.

For related color questions, see this guide to telling whether carnelian and citrine beads are real or treated.

Why is the resin question worth asking at all?

Gemstone substitution is documented. The USGS Mineral Commodity Summaries lists glass, plastics, and other materials as substitutes for natural gemstones and notes that simulants are frequently substituted for natural gemstones.

That general statement does not establish that a particular bracelet is fake.

Which bracelet materials fall outside these references?

Several listed bracelet materials have no specific gravity reference in the supplied evidence.

French Spring (9mm, $75) lists rutilated quartz, hematoid quartz, smoky quartz, cinnabar, and a carved wood flower. None of those materials has a specific gravity figure in these excerpts; the clear-quartz figure is not a supported target for its quartz beads.

Tide Chime (6–10mm, $75) lists aquamarine and natural freshwater pearl. The sources here provide no specific gravity reference for either material.

Violet Mist (10mm, $90) lists purple phantom quartz. The sources here provide no separate specific gravity figure for that material either.

What if these references leave the answer unresolved?

Treat the answer as unresolved rather than calling the bead resin or authentic. You could seek a gem lab assessment; the supplied excerpts do not describe a testing protocol or guarantee a result.

For a related discussion, see home check vs lab test for a snowflake obsidian bracelet.

Which check should you choose for your bracelet?

Choose according to the question you want to investigate, not an expectation that either reference identifies resin.

Choose the specific gravity comparison if you want to investigate a measured property of listed clear quartz: the in-stock Frost & Fortune (10mm, $105) lists clear quartz alongside green phantom quartz. The clear-quartz reference applies only to the listed clear quartz, not automatically to the green phantom quartz or the bracelet as a whole.

Choose the inclusion check if you want to compare observations with documented natural clear-quartz features: the in-stock Moss Garden (10mm, $95) lists clear quartz alongside moss agate. The IGS inclusion list applies only to the clear quartz, not to the moss agate. The product listing does not document inclusions in these beads.

Both bracelets list clear quartz, so these branches illustrate different questions, not evidence that either bracelet requires a particular check. Brand descriptions of energy or appearance are not authentication evidence.

FAQ

Does a heavy bracelet mean the stones are real?

The supplied evidence does not establish bracelet weight as proof of authenticity. IGS gives clear quartz a specific gravity of 2.651, not a target weight for a bracelet.

If a quartz bead has no visible inclusions, is it resin?

That conclusion is not supported here. IGS lists color zoning, two- and three-phase inclusions, and negative crystals as natural clear-quartz features, but does not say every clear quartz bead visibly contains them.

Can the weight test tell resin from glass?

The supplied evidence does not establish that distinction. It provides no specific gravity figures for resin, epoxy, or glass and no procedure for identifying them.

If my citrine faded, does that mean it was fake?

Fading alone does not establish that conclusion from these sources. IGS notes that heat-treated citrine may fade when exposed to heat; this is not evidence that a particular bead is resin or dyed.

How common are gemstone substitutes?

USGS notes that simulants are frequently substituted for natural gemstones and lists glass and plastics among substitute materials. The supplied excerpt gives no bracelet-specific rate.