Articles : i

Igneous Rock | One of the 3 Main Rock Types

Inclusions in Rocks and Minerals

inclusions of black tourmaline in a transparent gemstone

Iridescence Caused by Multiple Reflections

two butterflies in a museum display cabinet

Iron | Metallic Chemical Element

Iron Ore | Rock or Mineral Containing Iron

stack of reddish brown coloured rocks that are an ore of iron

Iron Oxides | Chemical Compounds of Iron and Oxygen

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  Minerals : I - J
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  Minerals : K - L
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    Lapis Lazuli
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  Minerals : M - N
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    Moldavite
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    Mookaite
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    Morganite
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    Mother of Pearl
- Minerals : O
  Minerals : O
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    Ocean Jasper
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  Minerals : P
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  Minerals : Q
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    Quartz with Inclusions
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  Minerals : R
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    Rainbow Calsilica
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    Rhodochrosite
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    Rhodonite
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    Ruby Zoisite
- Minerals : S
  Minerals : S
  - Sapphire
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    Septarian Nodule
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  Minerals : T
  - Tanzanite
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- Minerals : U - Z
  Minerals : U - Z
  - Unakite
    Unakite
Glossary
Glossary
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- Articles : A - B
  Articles : A - B
  - What is an Alloy?
    What is an Alloy?
  - What are Asteroids?
    What are Asteroids?
  - What is Aventurescence?
    What is Aventurescence?
  - What is Beryllium?
    What is Beryllium?
  - Birthstone Chart with Zodiac Signs
    Birthstone Chart with Zodiac Signs
- Articles : C
  Articles : C
  - What is Calcium Sulphate?
    What is Calcium Sulphate?
  - Capillitas Mine Known for Rhodochrosite
    Capillitas Mine Known for Rhodochrosite
  - What are Chakras?
    What are Chakras?
  - Chatoyance an Optical Phenomenon
    Chatoyance an Optical Phenomenon
  - Chemical Elements and Compounds
    Chemical Elements and Compounds
  - Chlorite Group of Minerals
    Chlorite Group of Minerals
  - Chromium aka Chrome
    Chromium aka Chrome
- Articles : C (cont.)
  Articles : C (cont.)
  - Cleaning Silver and Gemstone Jewellery
    Cleaning Silver and Gemstone Jewellery
  - Cryptocrystalline and Microcrystalline
    Cryptocrystalline and Microcrystalline
  - Crystal Healing | An Alternative Therapy
    Crystal Healing | An Alternative Therapy
  - What is Crystallisation?
    What is Crystallisation?
  - What are Crystals?
    What are Crystals?
  - Culet on a Gemstone
    Culet on a Gemstone
  - The Cullinan Diamond
    The Cullinan Diamond
- Articles : D
  Articles : D
  - What are Dendrites?
    What are Dendrites?
  - Derbyshire Blue John
    Derbyshire Blue John
  - Duke of Devonshire Emerald
    Duke of Devonshire Emerald
  - Empathic Warrior Crystals
    Empathic Warrior Crystals
  - What is the Etheric Body?
    What is the Etheric Body?
  - What is Firescale?
    What is Firescale?
- Articles : E - F
  Articles : E - F
- Articles : G - H
  Articles : G - H
  - The Term Gemmy
    The Term Gemmy
  - What are Gemstones?
    What are Gemstones?
  - What is a Geode?
    What is a Geode?
  - Heating Rocks and Minerals
    Heating Rocks and Minerals
  - The Biblical High Priest Breastplate
    The Biblical High Priest Breastplate
- Articles : I
  Articles : I
  - Igneous Rocks
    Igneous Rocks
  - What are Inclusions?
    What are Inclusions?
  - An Explanation of Iridescence
    An Explanation of Iridescence
  - Iron Oxides
    Iron Oxides
  - What is Iron?
    What is Iron?
  - What's Iron Ore?
    What's Iron Ore?
- Articles : J - L
  Articles : J - L
  - What is Lava?
    What is Lava?
  - What is Limestone?
    What is Limestone?
  - The Meaning of Lustre
    The Meaning of Lustre
- Articles : M - N
  Articles : M - N
  - What's Magma?
    What's Magma?
  - What's Manganese?
    What's Manganese?
  - Metamorphic Rocks
    Metamorphic Rocks
  - What are Minerals?
    What are Minerals?
  - Mohs Scale of Mineral Hardness
    Mohs Scale of Mineral Hardness
  - What is Mudstone?
    What is Mudstone?
  - Nodules and Concretions
    Nodules and Concretions
- Articles : O
  Articles : O
  - Oxide and Dioxide
    Oxide and Dioxide
  - What is Orbicular Jasper?
    What is Orbicular Jasper?
  - What's an Ore?
    What's an Ore?
  - Orthoclase Common Rock Forming Mineral
    Orthoclase Common Rock Forming Mineral
- Articles : P - R
  Articles : P - R
  - What's Pleochroism?
    What's Pleochroism?
  - What is Quartzite?
    What is Quartzite?
- Articles : S
  Articles : S
  - What's Schiller?
    What's Schiller?
  - Sedimentary Rocks
    Sedimentary Rocks
  - Silicate Minerals
    Silicate Minerals
  - What's Silicon?
    What's Silicon?
  - Silicon Dioxide aka Silica
    Silicon Dioxide aka Silica
  - St Edward's Sapphire
    St Edward's Sapphire
  - What is Sterling Silver?
    What is Sterling Silver?
  - Streak in Relation to Minerals
    Streak in Relation to Minerals
  - What is a Stromatolite?
    What is a Stromatolite?
  - The Stuart Sapphire
    The Stuart Sapphire
  - Sweet Home Mine
    Sweet Home Mine
- Articles : T
  Articles : T
  - What is Tarnish?
    What is Tarnish?
  - What is a Thunderegg?
    What is a Thunderegg?
  - What is Titanium?
    What is Titanium?
  - The Ancient Name Topazos
    The Ancient Name Topazos
  - Translucent and Transparent
    Translucent and Transparent
  - What are Tumbled Stones?
    What are Tumbled Stones?
- Articles : U - Z
  Articles : U - Z
  - What is Vanadium?
    What is Vanadium?
  - The Meaning of Vitreous
    The Meaning of Vitreous
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Blog

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Igneous Rock | One of the 3 Main Rock Types

Inclusions in Rocks and Minerals

Iridescence Caused by Multiple Reflections

Iron | Metallic Chemical Element

Iron Ore | Rock or Mineral Containing Iron

Iron Oxides | Chemical Compounds of Iron and Oxygen

Information

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Reviews on Trustpilot