Just last week end we were at Catalina Island for a Spring break with my daughters and wife. On Monday Lakewood, Colorado High School band played some Jazz, Classical and wind ensemble music for nearly two hours. I ditched ( actually sent them on a boat ride) my family and sat about 10-12 ft away the whole time. First violins were literally in front of me when some score called for 5 of them, at a time, to get up and kinda boogie, classical style - aggressive style playing and sound was thinnish, airy, stringy- nothing silky about it.
But at times during slow movements certain playing technique did call for gentle strokes that did produce some silkishly thin sounds.
So I think silky sound do exist on certain play technique- May be someone who plays the instrument can chime in here.
BTW, this was a good refresher course for my ears to get equalized with unamplified live acoustic music.