

Credit: Robert M. Lavinsky / CC BY-SA 3.0 (modified) · source
Pencil lead is graphite — the same element as diamond, just arranged differently. One is soft and dull, the other is the hardest natural substance and dazzlingly brilliant.
Personality tendencies across 4 dimensions
Score distribution across 9 types
Personality analysis based on the 5-factor model
Personality traits from metal physical properties
Market price and economic characteristics (as of 2026-02)
Unit Price (est.)
$1
per kg
Price Range
0.5-10,000 USD/kg
Market Trends & Notes
用途で価格変動大(石炭~ダイヤモンド)。CNT・グラフェンは高価。
Scientific basis of Carbon Yuki's colors
Colors of this element
黒色
#1C1C1C
透明
#FFFFFF
褐色
#8B4513
赤橙色
#FF6347
Materials with good metallurgical and personality compatibility
Based on Holland Code: SCR
Based on RIASEC (Holland Code) vocational interest model. These are illustrative suggestions derived from the character's personality profile.