Featured specimens for sale
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Light Green Tourmaline Crystal from Afghanistan
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39 PLN (~$10 USD)
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Green Tourmaline Crystal on Lepidolite from Afghanistan
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49 PLN (~$12 USD)
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Pink Tourmaline in Quartz from Afghanistan
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109 PLN (~$27 USD)
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Pink Tourmaline on Matrix from Afghanistan
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99 PLN (~$25 USD)
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Pink Tourmaline with Albite from Afghanistan
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119 PLN (~$30 USD)
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Pink-green Tourmaline from Afghanistan
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139 PLN (~$35 USD)
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Dark Green Tourmaline with Quartz from Pakistan
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149 PLN (~$37 USD)
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Pink Tourmaline from Afghanistan
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59 PLN (~$15 USD)
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Green Tourmaline on Quartz from Afghanistan
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89 PLN (~$22 USD)
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Red-brown Apophyllite Crystal from Aurangabad
Aurangabad, Maharashtra
15 PLN (~$4 USD)
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Apophyllite crystal with red inclusions from India
Aurangabad, Maharashtra
18 PLN (~$5 USD)
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Reddish-brown Apophyllite Crystal from Aurangabad, India
Aurangabad, Maharashtra
17 PLN (~$4 USD)
Collector Panel
From the first specimen. Hobby free up to 500 (plan limit, not a minimum). Hideable fields: short form or full depth. Cloud cataloging, print-ready PDF labels, AI descriptions, public sharing, statistics. Offline Field Mode and Quick Capture on Curator / Curator+. Not museum CMS.
Mineral knowledge base
A free encyclopedia of species: chemistry, crystallography, type localities, Strunz and Dana classification.
- Fluoro-tremolite -
☐Ca<sub>2</sub>Mg<sub>5</sub>Si<sub>8</sub>O<sub>22</sub> F<sub>2</sub> - Krutaite -
Cu<sup>2+</sup>(Se<sub>2</sub>)<sup>2-</sup> - Sal ammoniac -
N<sup>3-</sup>H<sub>4</sub>Cl - Potassic-richterite -
(K,Na)(CaNa)<sub>2</sub>Mg<sub>5</sub>[Si<sub>8</sub>O<sub>22</sub>](OH,F)<sub>2</sub> - Nepouite -
Ni<sup>2+</sup><sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> - Fluorotaramite -
Na(NaCa)(Mg<sub>3</sub>Al<sub>2</sub>)(Si<sub>6</sub>Al<sub>2</sub>)O<sub>22</sub>F<sub>2</sub> - Potassic-hastingsite -
KCa<sub>2</sub>(Fe<sup>2+</sup><sub>4</sub>Fe<sup>3+</sup>)(Si<sub>6</sub>Al<sub>2</sub>)O<sub>22</sub>(OH)<sub>2</sub> - Potassic magnesio-arfvedsonite -
KNa<sub>2</sub>Mg<sub>4</sub>Fe<sup>3+</sup>Si<sub>8</sub>O<sub>22</sub>(OH)<sub>2</sub> - Epistilbite -
Ca<sub>3</sub>(Si<sub>18</sub>Al<sub>6</sub>)O<sub>48</sub>ยท16H<sub>2</sub>O - Ringwoodite -
Mg<sub>2</sub>SiO<sub>4</sub>
Frequently asked questions
Why is it called Cabinet No. 40?
"Cabinet" refers to collector display cabinets - mine were multiplying quickly as my mineral collection grew. The number 40 came from my 40th birthday, which I was celebrating at the time. It has nothing to do with kitchen furniture or a government cabinet - it means mineral display cabinets and my original private collector profile.
Where do Cabinet No. 40 specimens come from?
Worldwide, with a focus on Polish localities (Lower Silesia, Tatra Mountains), native copper from Dzhezkazgan in Kazakhstan and classic European species. Every specimen lists its exact locality.
Do you follow IMA nomenclature?
Yes, strictly. All mineral names follow the IMA-CNMNC list with correct spelling (e.g. "matrix" never "matryca"), chemical formulas and mineral groups.
How does shipping work?
Poland: InPost lockers or courier, free over 300 PLN. International: European Union only via FedEx Economy. Every specimen is packed individually in cotton wool and collector boxes.
Can I return a specimen?
Yes, 14-day no-questions-asked return under EU consumer law.
What is the Collector Panel?
Our in-house app for cataloging private mineral collections from the first specimen. Hobby free up to 500 (plan limit, not a minimum). Hideable fields. You add photos and data; the system generates print-ready PDF labels and AI descriptions. Not museum CMS. Offline Field Mode on Curator / Curator+.
Does every specimen come with a certificate?
Every specimen has a full database record with locality, size and weight. Higher-value pieces ship with extra collector cards.