File:Spherical concentration of crystals in a gem spinel.png
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Captions
Captions
Spherical concentration of crystals in a gem spinel
Summary[edit]
| Description |
English: In gemology, inclusions in gemstones are very important for the gemologist to be able to identity their nature (natural or synthetic), if they have been subjected to any treatment, and in some cases, their geographic origin. Inclusions in gemstones may also be at the origin of some amazing photomicrographs when they display cosmic shapes, stunning contrast or bright colors. To this end I study gemstones inclusions as well as take their pictures under a microscope in order to reveal and share their hidden inner beauty. This image shows a rarely seen inclusion, made of a spherical concentration of tiny colorless crystals and negative crystals present within a gemmy natural 0.83 carat vivid red spinel. Note the well-formed isolated octahedral-shape negative crystal present outside of this spherical inclusion.
This photomicrograph was made with a natural 0.83 carat red spinel seen through a gemological trinocular optical stereomicroscope (Motic GM 171-T) at magnification x90 under dark-field illumination, helped on the side by a powerful fiber optic illuminator (halogen). In order to get a satisfactory depth of field to highlight most details, this image, done with the DSLR Nikon D850, is the result of the stacking in Photoshop of 38 images taken along Z axis. English: Spherical concentration of crystals in a gem spinel |
| Date | |
| Source | Own work |
| Author | Laurent Massi |
Licensing[edit]
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This file was uploaded as part of Wiki Science Competition 2023. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:59, 11 December 2023 | | 12,000 × 8,000 (32.45 MB) | Laurent Massi (talk | contribs) | Uploaded own work with UploadWizard |
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