Topaz With Screw Dislocation
Unknown Owner
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A really unusual miniature topaz specimen with "pizzazz," in that it is not just your typical gemmy miniature but has the bizarre growth effect called a screw dislocation running through its center and popping up in the top, right in the middle, where the screw dislocation raises the surface point of that portion of the crystal above the rest. It is incredibly hard to photograph, given the clarity of the crystal overall but internal fractures that reflect light and make it look fuzzier than it is in person. But trust me, this is a GREAT example of the effect and it is more commonly known in BERYLS. A screw dislocation in TOPAZ is much, much more uncommon. The crystal is pretty good on its own merits (gemmy, lustrous, undamaged), and even without the interesting "defect" would be worth $750 anyhow.
Product details
SpeciesTopaz
SizeMiniature
Dimensions4.8 x 2.6 x 2.4 cm
Added on10/23/2024
LocalityPakistan, Gilgit-Baltistan, Haramosh Mts.
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2024 | Unknown Owner | Not disclosed |
| — | The Arkenstone | Not disclosed |
Learn more
Mineral guide
Learn about Topaz
hard, glassy orthorhombic crystals from pegmatites and rhyolites; colors range from colorless to pink; sharp terminations aid identification, localitie…Regional guide
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