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Chemical Formula: NaCa₂Si₃O₈(OH)
Mineral Name: Pectolite
Color: White, colorless or gray and also pale to sky blue
Hardness: 4.5 - 5.0
Specific Gravity: 2.7 - 2.9

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Pectolite is a whitish mineral occurring in radiated or fibrous crystalline masses. It is a hydrous silicate of lime and soda. It is often confused with several other similar appearing minerals like: okenite, wollastonite, artinite etc. Pectolite is a nice specimen type mineral and can form interesting specimens from time to time. It occurs in cavities of basalt in igneous environments, and is almost always associated with zeolites. Its crystals are tiny, slender, elongated fibers radiating from a central point outwards.

Pectolite is popular among mineral collectors for its interesting radiating "blobs". The light blue variety Larimar is used as a gem. It is found in the regions of Russia, Czech Republic, Greenland, Italy,, USA. The rare variety of light blue gem called "Larimar" is found only in the Dominican Republic.