Hello, Jewel means : Edelstein , Juwel, while jewelry has the meaning of : Schmuck = rings, earings... ect... Schmuckstück is a compound: der Schmuck + das Stück > das Schmuckstück = one single piece 2. -chen: This is used with diminutives: der Hund > das Hündchen die Katze > das Kätzchen All nouns ending in -chen are neuter, that's the reason why we say: das Mädchen , although a girl is a female person - we are talking about the grammatical gender of the noun. 3. - schaft: All nouns ending in -schaft are female: die Wissenschaft die Kundschaft die Gesellschaft die Wirtschaft - ect. This ending has no special meaning.