Exodus 28:13-15

New Revised Standard Version, Anglicised

¹³ You shall make settings of gold filigree, ¹⁴ and two chains of pure gold, twisted like cords; and you shall attach the corded chains to the settings.

The Breastplate

¹⁵ You shall make a breastpiece of judgement, in skilled work; you shall make it in the style of the ephod; of gold, of blue and purple and crimson yarns, and of fine twisted linen you shall make it.