The Specimen Library / Under the Loupe
Howlite · Science
Calcium borosilicate / mineral species
A closer look beyond the specimen label.
← Return to HowliteC&C image archive · photograph forthcoming
No substitute photograph has been used
No substitute photograph has been used
The material, examined
What the name tells you
Howlite, magnesite and other pale minerals can be difficult to separate from a photograph. Color added by treatment does not change the underlying identity into turquoise.
A useful question at the counter
What material was identified before any color treatment? A receipt that only says “blue stone” leaves that question open.
A note for your collection
Avoid abrasion and chemical experiments. Treat unknown colored material cautiously until its treatment is understood.
Sources & further reading
References are labeled by role. A source documenting a belief is not evidence of a medical or mineralogical effect. Reflection prompts are C&C editorial suggestions.
- Handbook of Mineralogy: Howlite
- C&C original crystal-practice index, 2017 archive: contemporary C&C teaching and symbolic associations.
Adjacent drawers
Related Specimens
The cabinet