Collection: Vesuvianite

Vesuvianite, also known as idocrase , is a rather fascinating silicate mineral , both for its chemical composition and for its aesthetic qualities in jewelry.

🔹 Origin of the name

• The name vesuvianite comes from Mount Vesuvius , the famous volcano in Italy, where the mineral was first discovered.

• The name idocrase (less used today) comes from the Greek eidos (form) and krasis (mixture), because this mineral can resemble others.

🔹 Chemical formula

• Complex formula:

  $$C{a}_{19}(Al,Mg,Fe{)}_{}$$ 13 ( S i O 4 ) 10 ( S i 2 O 7 ) 4 ( O H , F , O ) 1 0 Ca_{19}(Al,Mg,Fe)_{13}(SiO_4)_{10}(Si_2O_7)_4(OH,F,O)_10

• It is a calcium and aluminum silicate , sometimes containing iron, magnesium, or manganese.

🔹 Crystal system

• Tetragonal

• Crystals may be prismatic or columnar, often well formed.

🔹 Color

• Very variable: olive green , brownish green , yellow , blue , purple , brown , even colorless .

• Green is the most common color, which is why it is sometimes called "California jade."

🔹 Transparency and shine

• From translucent to transparent

• Vitreous to resinous luster

🔹 Hardness

• 6.5 to 7 on the Mohs scale: suitable for jewelry, but handle with care.

🔹 Deposits

• Present in calcium-rich metamorphic rocks , often in contact between calcareous sedimentary rocks and magmatic intrusions.

• Notable deposits:

  • Italy (Vesuvius)

  • Canada (Quebec, British Columbia)

  • United States (California, Vermont)

  • Russia, Switzerland, Pakistan, Kenya

🔹 Use

• Ornament and jewelry : although quite fragile, some varieties are cut as fine stones.

• Collection : prized by mineralogists because of the beauty of its crystals.

🔹 Virtues in lithotherapy

• Would promote creativity , emotional expression and inner harmony .

• Would be helpful in strengthening courage and personal growth .