Inaccurate?

Glyph of Warding, Greater

(Player's Handbook v.3.5, p. 237)

Abjuration
Level: Cleric 6, Rune 6,
Components:

This spell functions like glyph of warding, except that a greater blast glyph deals up to 10d8 points of damage, and a greater spell glyph can store a spell of 6th level or lower.
Material Component: You trace the glyph with incense, which must first be sprinkled with powdered diamond worth at least 400 gp.