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NEWS & BLOG

Home » NEWS & BLOG
26 Jan
Education

EMERALD

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL: Beryl CHEMISTRY: Be3Al2Si6O18 COLOR: Vibrant green REFRACTIVE INDEX: 1.577 to 1.583 BIREFRINGENCE: 0.005 to 0.009 SPECI...

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26 Jan
Education

AQUAMARINE

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL: beryl CHEMISTRY: Be3Al2Si6O18 COLOR: greenish blue, light in tone REFRACTIVE INDEX: 1.577 to 1.583 BIREFRINGENCE: 0.005 ...

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26 Jan
Education

MORGANITE

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL: Beryl CHEMISTRY:  Be3Al2Si6O18 COLOR: Pink to orange-pink REFRACTIVE INDEX: 1.583 to 1.590 BIREFRINGENCE:  0.007 to 0.00...

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26 Jan
Education

TOURMALINE

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL:Tourmaline CHEMISTRY:  Elbaite Na(Li1.5,Al1.5)Al6Si6O18(BO3)3(OH)4 Dravite NaMg3Al6Si6O18(BO3)3(OH)4 Liddicoatite Ca(Li2Al)A...

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26 Jan
Education

TOPAZ

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL:Topaz CHEMISTRY: Al2(F,OH)2SiO4 COLOR: Yellow, orange, brown, pink to red to purple red, blue, light green and colorless R...

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26 Jan
Education

SPINEL

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL: spinel CHEMISTRY: MgAl2O4 COLOR: red, orange, pink, purple, blue, black REFRACTIVE INDEX: 1.718 BIREFRINGENCE: None SPE...

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28 Jan
Education

TANZANITE

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL: ZOISITE CHEMISTRY: Ca2Al3(SiO4)3(OH) COLOR: Violet blue to bluish violet to violet purple REFRACTIVE INDEX: 1.691 to 1.70...

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28 Jan
Education

PERIDOT

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL: Olivine CHEMISTRY: (MgFe)2SiO4 COLOR: Yellowish green REFRACTIVE INDEX: 1.65 to 1.69 BIREFRINGENCE: 0.035 to 0.038 SPEC...

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28 Jan
Education

OPAL

  • July 15, 2020
  • By author-avatar Tommy Orlandi
  • 0 comments
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MINERAL:  Hydrated Silica CHEMICAL COMPOSITION: SiO2•nH2O COLOR: All colors REFRACTIVE INDEX: 1.37 to 1.47 BIREFRINGENCE: None S...

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