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Natural Rutilated Quartz - oval cabochon - black rutile quartz - 0.485 ct

Natural Rutilated Quartz - oval cabochon - black rutile quartz - 0.485 ct

€3,69 EUR
€3,69 EUR
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Stock bas : 1 restant(s)

This 0.485 ct oval cabochon delivers undeniable visual impact—luminous quartz infused with striking black rutile veins that compose a wholly singular design. The refined domed polish invites versatile use, whether set into heirloom jewelry or displayed as a prized mineral specimen. Invest in authentic gemstone beauty that transcends fleeting trends, offering lasting elegance and genuine mineral character.


Certificate : CA-QUAR026RB-003-095
Gem Type: Natural Clear Quartz
Weight: 0.485 Carat
Shape: oval
Size: 3.9 x 5.9 x 2.3 mm.
Color:  clear/black
Clarity: Transparent
Luster: submetallic
Treatment: heated to stabilise materials
Optical Phenomenon : rutilated ( black titanium dioxide inclusions trapped during the formation of quartz)

Birefringence : 0.285 to 0.296

  • System: Tetragonal.
  • Habit: Prismatic, acicular (needle-like), often elongated parallel to the c-axis.
  • Symmetry: High symmetry (4/mmm)
  • Key Features: High refractive index, large birefringence, high dispersion, giving it distinct colors and optical effects. 
  • Formation: Rutile needles grow within or on quartz, often epitaxially, aligning with the quartz's crystal structure to minimize stress.
  • Patterns: Can form random, parallel, star-shaped (sagenitic), or dense bundles.
  • Color: Golden, red, silver, black (from rutile), with the quartz usually colorless.
  • Significance: The interaction of their crystal structures (epitaxy) dictates the beautiful patterns, making it popular for jewelry


Crystallography : Hexagonal (tetragonal)
Dispersion : 0.28 (higher then diamond)
Luster : Vitreous
Hardness : 7
Refractive index : the host quartz, typically around 1.544–1.553, while the rutile inclusions themselves have a very high RI (2.616–2.903), 
Specific gravity : 2.651

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