Diamond vs Zircon

Property Diamond Zircon
화학식 C ZrSiO4
결정계 Cubic (Isometric) Tetragonal
광물 분류 01 Native Elements 09 Silicates
모스 경도 10.0 6.5-7.5
색상 Colorless, yellow, brown, blue, green, pink Colorless, yellow, brown, red, green, blue
광택 Adamantine Adamantine
조흔색 None Colorless
투명도 Transparent Transparent
벽개 Perfect octahedral {111} Poor {110}, {111}
단구 Conchoidal Conchoidal

Key Differences

  • Diamond (hardness 10) is far harder than zircon (hardness 6.5–7.5).
  • Zircon (ZrSiO4) is a silicate; diamond is pure carbon (C).
  • Zircon has very high refractive index and dispersion, giving fire similar to diamond — hence its use as a diamond simulant.
  • Zircon is the oldest mineral on Earth (up to 4.4 Ga); diamond also forms deep in geological time but is reset during eruption.
  • Cubic zirconia (synthetic ZrO2) is a different substance often confused with natural zircon.

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