Silver earrings for woman sterling 925 set with opal Blue Israeli jewelryDangle earrings made in sterling silver 925 set with blue opals. Reactabgle shape handcrafted. Blue in Judaism is used to symbolise divinity, because blue is the color of the sky and sea. It can also represent equilibrium, since its hue suggests a shade midway between white and black, day and night. In the Torah, the Israelites were commanded to put fringes, tzitzit, on the corners of their garments, and to weave within these fringes a twisted thread