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Corundum

Gemstones
Pronunciation

Understanding ARPABET Pronunciation

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The pronunciation guide uses the ARPABET phonetic system—the same system used in speech recognition and text-to-speech applications.

Vowel Examples:
AE1 = cat, bat
EH1 = bed, head
IY1 = see, me
OW1 = go, boat
UW1 = boot, do
Stress Numbers:
0 = no stress (unstressed)
1 = primary stress (loud)
2 = secondary stress (medium)
Example:
AH0 TH IY1 N AH0
= a-THEE-na (Athena)

The stressed syllable (marked with 1) is pronounced louder and clearer than others.

Quick Definition

The mineral family of ruby and sapphire, symbolizing purity and resilience.

Detailed Definition
Corundum in its pure form is colorless; impurities create ruby’s red or sapphire’s blue—making it a poetic metaphor for how experience colors essence. Poets use corundum to explore the core self beneath roles, or the unbreakable foundation of character that persists through life’s trials.
Example
Example in poetry:
A poet writes, “Corundum is the soul’s bedrock—colorless until life stains it ruby or sapphire”; in metaphysical verse, pure corundum symbolizes the unmarked self; modern poetry uses it to explore how experience shapes identity; its hardness becomes metaphor for moral integrity; in contrast to softer gems, corundite represents enduring truth; its role as ruby/sapphire parent makes it a symbol of potential.
Additional Notes
Corundum is the mineral species of ruby and sapphire (all colors except red are sapphires); second only to diamond in hardness, it symbolizes endurance, nobility, and divine favor—its crystalline perfection and color range make it versatile in poetry, from passion (ruby) to wisdom (blue sapphire).
Also Known As
aluminum oxide ruby sapphire family hardness king
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