Aquamarine is a blue to blue-green beryl coloured by iron or a coloured centre following irradiation. If the blue colour is saturated, aquamarine can bear the name Santa Maria aquamarine.

Aquamarine can come from many countries: Brazil, Madagascar, India, Nigeria, Mozambique, Pakistan, etc.

Each gemstone brought to the laboratory is analysed and identified. In the case of aquamarine, thermal treatments are difficult to detect.


  • Name:Aquamarine
  • Mineralogical nature:Beryl
  • Colour:Light blue to dark blue (Santa Maria), blue-green
  • Crystal system:Hexagonal
  • Chemical composition:Be3Al2(Si6O18)
  • Causes of colour:Fe2+ and Fe3+, coloured CO3- and NO3- centres due to irradiation (Maxixe type)
  • Density:68 to 2.77
  • Hardness:5
  • Cleavage:None
  • Fracture:Conchoidal
  • Optic sign:Negative uniaxial
  • Refractive index:no: 1.574 to 1.600 – n: 1.568 to 1.592
  • Birefringence:006 to 0.009
  • Dispersion:014
  • Pleochroism:Colourless to more or less clear blue depending on the saturation of the stone
  • UVL:Inert
  • UVC:Inert
  • Treatments:Irradiation
  • Syntheses:Hydrothermal dissolution
  • Geographical origin:Madagascar, Brazil, Russia, Namibia, Sri Lanka, Myanmar, Mozambique, Nigeria, India, Afghanistan, Pakistan, USA, etc.


(+33) 01 40 26 25 45
30, rue de la Victoire - 75009 Paris
Monday - Thusday : 9H30 to 17H00
Friday : 9h30 to 16h30
Withdrawal files at same days and time


Share This