יַשְׁפֵה

The English word jasper descends from Hebrew yashpeh through Greek iaspis and Latin iaspis. The Hebrew term appears in the list of twelve breastplate stones (hoshen) prescribed in Exodus 28 for the High Priest of Israel, and its identification has been debated since antiquity. Modern translators and gemologists most commonly assign yashpeh to jasper — an opaque, fine-grained silica stone found in shades of red, yellow, brown, green, and mottled combinations — though older translations rendered it differently and some scholars have proposed jade or green feldspar. The Hebrew root is probably borrowed from an Akkadian source, yašpu, which appears in Mesopotamian texts naming a stone used for cylinder seals and ornaments; the Akkadian term is itself possibly related to an even older Sumerian stone-name. The word's history is thus older than the Hebrew Bible: it was already an ancient borrowing when it entered the Exodus list.

Jasper in the ancient world was an extremely common material for cylinder seals and scarab amulets precisely because it was not particularly precious — available in large enough pieces to be carved, hard enough to hold a sharp design, and widespread enough to be affordable for bureaucratic use at scale. The cylinder seal, pressed into clay to authenticate documents, was the identification badge and signature of the ancient Near East, and jasper — particularly the green and red varieties — was among the most widely used seal materials from the 3rd millennium BCE onward in Mesopotamia, Egypt, and the Levant. The Babylonian Epic of Gilgamesh describes a magical garden of jeweled trees in which jasper appears among the gems, suggesting it was associated with paradisiacal abundance and divine favor even while remaining a practical bureaucratic material.

The Greek iaspis, borrowed from the Semitic, names a green or sometimes spotted stone in most ancient Greek descriptions — suggesting the green jasper or a green chalcedony that the Greek world associated with the word. This is consequential for the biblical translation tradition: when the Septuagint (the Greek translation of the Hebrew Bible, produced in Alexandria c. 3rd–2nd century BCE) rendered the twelve breastplate stones into Greek, the translators used iaspis for yashpeh, and when the Latin Vulgate translated the Greek, it used iaspis again. The book of Revelation, written in Greek, describes the New Jerusalem's first foundation stone as iaspis — typically translated in English Bibles as 'jasper' — described as 'clear as crystal.' This description of 'clear jasper' has puzzled commentators for centuries, since jasper is characteristically opaque; some scholars argue that the Revelation writer meant rock crystal, green fluorite, or another translucent green stone rather than what modern mineralogy calls jasper.

In medieval European lapidary literature, jasper was one of the most elaborately described gemstones, with numerous varieties distinguished by color and pattern, each assigned specific medical and magical properties. The 12th-century lapidary of Marbode of Rennes lists jasper as green by nature (confirming the ancient association) but notes many variant colors; the stone was credited with protecting against poison, strengthening the stomach, aiding childbirth, and protecting against demonic attack. The Persian and Islamic lapidary traditions, drawing on the same ancient Near Eastern sources, assigned comparable properties to the stone they called yashm or shad (terms related to the same Semitic root). Jasper's longevity as a named and discussed gemstone — from Sumerian seal-cutters to Revelation to medieval physicians to modern lapidary shops — makes it one of the most continuously documented stones in human material culture.