Sentence:  I walked to the right around it to buildings containing illuminated manuscripts and came to the Treasury , which houses such things as coffee cups <WSD>covered</WSD> with diamonds , jewelled swords , rifles glittering with diamonds and huge divan-like thrones as large as small beds , on which the sultans sat cross-legged . 
Meaning of the word marked with <WSD> tags:  provide with a covering or cause to be covered