Serendibite
Serendibite is a sorosilicate-nesosilicate mineral recognized among collectors for its crystal form and distribution.
About Serendibite
Serendibite belongs to the sorosilicate-nesosilicate class in the serendibite group and has the chemical formula Ca₂(Mg,Fe)₃Al₄(Si₂B₂O₁₁)(BO₃)(SiO₄)O₂. It crystallizes in the triclinic system and holds a steady position among sorosilicate-nesosilicate species. Its combination of structural character and global distribution make it a recognized species in both systematic and aesthetic collections.
Identification & care
Specimens usually show prismatic; bladed; granular. Its color is typically deep blue to blue-black and grey-blue. The luster is vitreous to resinous, the streak is white to pale grey, and specimens range from transparent to translucent. The cleavage is good {010}. The fracture is conchoidal, which aids identification.
Collector context
How it forms
Serendibite forms in contact metamorphism of b-bearing calcareous rocks; skarns with unusual b-ca-mg-al chemistry. It is commonly found in association with diopside, phlogopite, calcite, tremolite, spinel.
Why collectors care
Collectors pursue Serendibite for the clarity of its crystal form and, in good material, saturated color that reads instantly across a display case. A well-terminated serendibite on clean matrix photographs well, identifies quickly, and anchors a cabinet piece. Top Chinese specimens over the last two decades have reset the bar for what serendibite looks like at collector grade.
What affects value
Value in Serendibite is assessed, in typical order of weight, against: (1) locality provenance; (2) size relative to the species norm; (3) crystal form and termination sharpness; (4) color saturation and zoning; (5) transparency and internal clarity; (6) matrix quality and aesthetic balance; (7) condition (absence of damage, chips, or repair). Cleaning quality and verified locality documentation act as multipliers across the above.
Naming history
The name Serendibite has a specific etymological and historical context — see Mindat's reference entry for provenance details. We have retained naming data at the record level; published prose is paraphrased from factual fields rather than copied from source.
Frequently asked questions
What is Serendibite?
Serendibite is a sorosilicate-nesosilicate mineral recognized among collectors for its crystal form and distribution.
What crystal system does Serendibite belong to?
Serendibite crystallises in the Triclinic crystal system.
Is Serendibite rare?
As a collector mineral, Serendibite is generally considered very rare.
References & databases
Mindat.org is the world’s largest open mineralogy database. Our descriptions are written independently and fact-checked.