2 added further expl. of schmucklosigkeit
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los implies the absence of something (hoffnungslos, wertlos, etc). That being said

Anspruchslosigkeit

says without demands / requirements (Ansprüche)

Einfachheit

from einfach, without something needless or distracting

Schmucklosigkeit

says without jewelry Edit (literally). It is rather used in the figurative sense (see comment)

Ursprünglichkeit

from Ursprung, indicates that something was/is preserved

All those substantives (but Einfachheit) are rather seldom used. I also recommend Einfachheit and Schlichtheit or do without and express it differently, as proposed already. Simplizität is rather unusual.

los implies the absence of something (hoffnungslos, wertlos, etc). That being said

Anspruchslosigkeit

says without demands / requirements (Ansprüche)

Einfachheit

from einfach, without something needless or distracting

Schmucklosigkeit

says without jewelry

Ursprünglichkeit

from Ursprung, indicates that something was/is preserved

All those substantives (but Einfachheit) are rather seldom used. I also recommend Einfachheit and Schlichtheit or do without and express it differently, as proposed already. Simplizität is rather unusual.

los implies the absence of something (hoffnungslos, wertlos, etc). That being said

Anspruchslosigkeit

says without demands / requirements (Ansprüche)

Einfachheit

from einfach, without something needless or distracting

Schmucklosigkeit

says without jewelry Edit (literally). It is rather used in the figurative sense (see comment)

Ursprünglichkeit

from Ursprung, indicates that something was/is preserved

All those substantives (but Einfachheit) are rather seldom used. I also recommend Einfachheit and Schlichtheit or do without and express it differently, as proposed already. Simplizität is rather unusual.

1
source | link

los implies the absence of something (hoffnungslos, wertlos, etc). That being said

Anspruchslosigkeit

says without demands / requirements (Ansprüche)

Einfachheit

from einfach, without something needless or distracting

Schmucklosigkeit

says without jewelry

Ursprünglichkeit

from Ursprung, indicates that something was/is preserved

All those substantives (but Einfachheit) are rather seldom used. I also recommend Einfachheit and Schlichtheit or do without and express it differently, as proposed already. Simplizität is rather unusual.