Exodus 25:7

onyx stones and stones to be set in the ephod and in the pectoral.

Exodus 28:4

And these are the garments which they shall make: the pectoral, the ephod, the robe, the broidered coat, the mitre, and the girdle. Therefore let them make the holy garments for Aaron, thy brother, and his sons, that they may be my priests.

Exodus 28:6-30

and they shall make the ephod of gold, blue, purple, scarlet, and fine twined linen, with cunning work.

Treasury of Scripture Knowledge

Summary

Onyx stones, and stones to be set in the ephod, and in the breastplate.

Ephod

General references

Bible References

Ephod

Exodus 28:4
And these are the garments which they shall make: the pectoral, the ephod, the robe, the broidered coat, the mitre, and the girdle. Therefore let them make the holy garments for Aaron, thy brother, and his sons, that they may be my priests.

General references

Exodus 35:23
Every man who had blue or purple or scarlet or fine linen or goats' hair or red skins of rams or badgers' skins brought them.
Exodus 39:2
He also made the ephod of gold, blue, purple, scarlet, and fine twined linen.