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News

Spiral structure in a Colombian emerald
Blue anatase crystals in quartz from Brazil
Micrographs
09.08.2020

Blue anatase crystals in a quartz from Brazil

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CO2 diamond slice, SGDF-5864, under UV excitation (220 nm). Micrograph Dr. T. Hainschwang
Insight
25.04.2020

Conference on replay: Brown Diamonds, a new in-depth look at their properties and classification

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Brown Diamond
Insight
21.04.2020

Webinar: Brown diamonds - A new in-depth look at their properties and classification

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1K followers on Instagram
Insight
04.04.2020

1K followers on Instagram

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Tiny guest oriented inclusions with biotite crystal inclusions in a peridot from Myanmar
Micrographs
24.02.2020

Tiny guest oriented inclusions with biotite crystal inclusions in a peridot (forsterite) from Myanmar

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Melee-sized coloured sapphires
Publication
15.10.2019

Efficiently Testing Melee-Sized Coloured Stones

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Welcome sign and Mogok seen from the view point.
Insight
01.07.2019

Mogok : The Valley of Precious Stones

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Cobaltocalcite or cobaltoan calcite
Publication
28.05.2019

Cobaltocalcite or cobaltoan calcite: A Swiss answer

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Pyrochlore automorphous crystal and comet tail in a blue sapphire-NTE
Micrographs
08.04.2019

Automorphous pyrochlore crystal and comet tail in a sapphire (nte)

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Cavity filling (C2) - Mong Hsu-Myanmar
Micrographs
01.04.2019

Cavity filling (C2) in a ruby from Mong Hsu, Myanmar

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Bubbles in epoxy resin, emerald from Chivor, Colombia (darkfield illumination)
Micrographs
25.03.2019

Bubbles in epoxy resin in an emerald from Chivor, Colombia (darkfield illumination)

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Garnet inclusion in type Ia diamond (darkfield illumination)
Micrographs
20.03.2019

Garnet inclusion in type Ia diamond (darkfield illumination)

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  • About us
  • Services
    • Main services
      • Diamond services
      • Gem services
      • Pearl services
    • Exclusive services
      • Cleaning and sorting of chemically-unset melee diamonds
      • Cleaning & oiling of emeralds
      • Coral species identification
      • Cullinan report
    • Consulting
  • Publications
  • Products
  • News
  • Contact
  • en
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