SUMMARY | PHOTO GALLERY | NEXT | PREVIOUS | | LEXICON

ART & LITERATURE

 

 

 

  nintakoh (black spinel)

 

Thailand

Kanchanaburi is famous for the mining of black spinel which is locally called nin or nintakoh. Black spinel is sometimes sold under the misleading name black onyx.

 

However, it has a hardness of only 6.5 to 7.0 and is therefore more susceptible to damage, and thus inferior for use in jewellery.

  nintakoh (black spinel)