And Pharaoh took off his ring from his hand, and put it upon Joseph's hand, and arrayed him in clothing of fine linen, and put a gold chain about his neck;
Read Chapter 41
Ambrose of Milan
AD 397
On this account I think that Joseph merited rewards that were more mystical, because he spoke concerning mystical things. For what is the meaning of the ring that was put upon his finger? Only this, that we may understand that the pontificate of faith was bestowed on him so that he could himself seal others. What of the robe, which is the garment of wisdom? Only this, that preeminence in wisdom was granted to him by the King of heaven. The chain of gold appears to represent good understanding; the chariot too signifies the exalted height of merit.
His ring, the sign of power. Thus Alexander appointed Perdiccas to be his successor. (Curtius x. 5.) Assuerus gave his authority to Aman and to Mardocheus, Esther iii. and viii.
Silk, or fine cotton; shesh (or ssoss). See byssus, Exodus xxv. 4.
Chain, with which the president of the senate in Egypt, or the chief justice, was adorned. The three chief officers among the Chaldees wore chains, Daniel v. 7, 16. (Calmet)