Our Code: k2-139- Nephrite
– available in bulk quantity –
Nephrite from Afghanistan
Nephrite is a variety of the calcium and magnesium-rich amphibole mineral actinolite. The chemical formula for nephrite is Ca2(Mg, Fe)5Si8O22(OH)2. It is one of two different mineral species called jade. The other mineral species known as jade is jadeite, which is a variety of pyroxene.
While nephrite jade possess mainly grays and greens (and occasionally yellows, browns or whites), jadeite jade, which is rarer, can also contain blacks, reds, pinks and violets. Nephrite jade is an ornamental stone, used in carvings, beads, or cabochon cut gemstones.
Nephrite can be found in a translucent white to very light yellow form which is known in China as mutton fat jade, in an opaque white to very light brown or gray which is known as chicken bone jade, as well as in a variety of green colors. Canada is the principal source of modern lapidary nephrite.
Nephrite colors do not match in cither variety or intensity the colors of jadeite. With few exceptions, nephrite shades are usually dark and somber, and nephrite never attains the fine green of Imperial jade (jadeite).
Our Code: k2-126-Afghanistan Jade
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“Afghanistan jade” or “Afghan jade” is a variety of serpentine called bowenite, and sometimes called “sang-i-yashm”. It can vary from white to light and dark green and can occur with black or pink.