Blue Smoky Quartz Guide: Tyndall Blue, Blue Needles & What to Check
Blue smoky quartz is quartz with a blue haze from Tyndall scattering, and BE.'s strand shows fine blue needles as well. Learn where the blue comes from, how to read a strand and what to ask a seller.
In this field note
In BE.'s strand, fine blue needles show inside the beads as well, so a soft haze and sharper blue lines sit in the same bead. The strand comes from Colombia and is untreated.
What Blue Smoky Quartz Is
The host is quartz, the same silica framework as clear quartz, amethyst and smoky quartz, at about Mohs 7. What sets this material apart sits inside the bead: a dispersed haze that turns blue in light, and blue needle-like inclusions you can see with the eye.
Blue Smoky Quartz is the name of the material. It describes how the stone looks; the mineral underneath is quartz.
| Layer | What it is | What you see |
|---|---|---|
| Quartz host | Quartz, SiO2, trigonal, about Mohs 7. | A clear, glassy body. |
| Blue haze | Tyndall scattering by very fine particles inside the quartz. | A soft blue that shifts as the light and viewing angle change. |
| Blue needles | Needle-like blue inclusions. | Fine blue lines inside the beads, more in some beads than in others. |
| Treatment, BE. strand | Untreated: no heat, dye, coating or irradiation. | Colour that sits inside the bead, with clean drill holes. |
Where The Blue Comes From
The Tyndall effect is the scattering you see when a beam of light crosses smoke or mist. Fine particles spread through a clear medium scatter short, blue wavelengths more strongly than long, red ones. Inside quartz the same effect leaves a pale blue glow, with no pigment involved.
Blue quartz has more than one route to its colour. Peer-reviewed work on rock-forming blue quartz traces the blue to scattering by sub-micron mineral inclusions, and GIA has documented other blue quartz coloured by blue mineral inclusions such as dumortierite or, in a 2025 case, elbaite. In blue smoky quartz the haze is scattered light, and the needles are a second feature you can see.
How To Observe The Strand
- Turn one bead slowly. The haze strengthens and softens as the angle of the light changes.
- Hold it against a white page in daylight. The haze reads as a soft blue, and the needles show as finer, sharper lines.
- Look at the drill holes. Colour gathered around the holes or in surface cracks is a dye warning. In a natural bead the blue sits inside.
- Compare beads along the strand. A matched strand keeps the haze even from bead to bead; the number of needles varies from one bead to the next.
Untreated Blue Smoky Quartz from Colombia in 9 mm beads, graded Heritage on BE. Crystal 4T™.
SHOP NOWBlue Smoky Quartz, Smoky Quartz And Blue Needle Quartz
Smoky quartz is brown to grey quartz, coloured by natural irradiation acting on aluminium in the crystal. Blue smoky quartz is clear quartz with a blue haze, and its name describes that haze.
Blue needle quartz is a trade name for quartz with blue needle-like inclusions; in some tested specimens the needles have been identified as dumortierite. BE.'s Blue Smoky Quartz shows blue needles too, together with the Tyndall haze.
Stone Origin Record
Read the Stone Origin Record alongside the product description for this strand. The treatment disclosure guide explains treatment terminology used for crystal jewellery.
BE.'s strand comes from Colombia, is untreated and is strung from 9 mm beads. Its Stone Origin Record states the lot and the four BE. Crystal 4T™ readings.
Blue smoky quartz strands are listed in the BE. collection, and every strand ships with a Stone Origin Record that states its lot and four BE. Crystal 4T™ readings.
The smoky quartz meaning and properties guide covers the brown colour variety, hardness and its distinction from obsidian.
Frequently asked questions
Q1.What is blue smoky quartz?
Quartz with a blue haze inside clear crystal. The blue comes from the Tyndall effect, scattering by particles too small to see, and BE.'s strand also shows fine blue needles.
Q2.Why is blue smoky quartz blue?
Very fine particles inside the quartz scatter the blue part of light back toward the eye. This is the Tyndall effect, and no dye or pigment is involved in BE.'s strand.
Q3.Is blue smoky quartz natural?
Yes. Quartz with a scattered-light blue forms in nature, and BE.'s strand is untreated: no heat, dye, coating or irradiation.
Q4.Is blue smoky quartz the same as blue needle quartz?
They overlap. Both are quartz with blue inside. Blue needle quartz is named for its needles and Blue Smoky Quartz for its blue haze, and BE.'s strand shows needles as well.
Q5.What is the difference between blue smoky quartz and smoky quartz?
Smoky quartz is brown to grey, coloured by natural irradiation in the crystal. Blue smoky quartz is clear quartz with a blue haze of scattered light.
Q6.Where does BE.'s blue smoky quartz come from?
Colombia, as stated on the Stone Origin Record that ships with the strand.
References
Field Notes.
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