Abstract: Gemological terms are characterized with their interdisciplinary and specialty, so the accuracy of their translation plays a vital role in the business of gemological field. This paper analyzes the characteristics of gemological terms from the lexical perspective, and summarizes that the word class includes nouns, verbs and adjectives, nouns of gems has different suffixes, and the abbreviations and noun structure are widely used and have their own characteristics of formation. This paper also proposed that literal translation and zero translation are mainly applied to English-Chinese translation and some relevant translation approaches are provided.

Key words: gemological terms, English-Chinese translation approach