Prehnite Split Necklace

Prehnite Split Necklace from China

Prehnite

Prehnite is a pale green to yellow-green mineral that often occurs in rounded, spherical aggregates or as crustal deposits. It has a glassy to pearly luster and is partly translucent. The colour is usually caused by traces of iron. Prehnite is sometimes used as a gemstone and is popular among collectors because of its distinctive appearance.

The mineral was first discovered in South Africa and is named after the Dutch colonel Hendrik von Prehn. Major deposits can be found in South Africa, Australia, Scotland, the United States and China. Prehnite usually forms in cavities of volcanic rocks and is a product of hydrothermal processes. Its chemical formula is Ca₂Al(AlSi₃O₁₀)(OH)₂ and its hardness is between 6 and 6.5 on the Mohs scale.

Sources:
Mindat.org, Gemdat.org, Wikipedia - Prehnite

Our necklaces are available in various designs, including faceted, ball, split and knotted necklaces. Currently, all necklaces in our range are 45 cm long, which corresponds to a standard wearing length for most neck sizes. The beads or slivers used vary in shape and finish, giving each necklace a unique character.

The bead size varies depending on the type of chain, from around 4 mm in finer models to around 8 mm in the somewhat coarser versions. For split necklaces, uneven pieces of stone are used, with the split used varying from 5 to 10 mm, giving a natural look. Knotted necklaces feature a knot between the beads, which is not only decorative but also contributes to the strength of the jewellery.

Keep in mind that not every variety is available in all designs or bead sizes.