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 Home / Gem Library / Natural Gemstones / Serendibite March 01, 2024  

Natural Serendibite
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There are 21 Serendibite(s) available at

Serendibite is an extremely rare boron-bearing mineral that is only rarely found as facet grade material. There appear to be only two sources for gem quality serendibite, the Ratanapura area in Sri Lanka, and the Mogok stone tract in Northern Myanmar.

Known Facts
Color Key: Blue, Blue green, Gray blue, Light yellow, Dark blue, Black.
Refractive Index: 1.701 - 1.706,
Chemical Composition: Ca2(Mg,Al)6(Si,Al,B)6O20
Hardness: 6 - 7
Density: 3.40
Crystal Group: Triclinic
Ocurrence: Gangapitija, Ambakotte, Sri Lanka; Ohn Gaing mine, Mogok, Myanmar; Tanzania; Franklin N.J., Johnsburg N.Y, U.S.A.

Before 2005, only three serendibites were thought to be in existence, all from Sri Lanka. The first two were discovered by rare stone specialist D. P. Gunasekera and purchased by the late Prof. E. J. Gübelin of Switzerland for around $14,000.00 per carat.

More recently, facet quality serendibite was also discovered in the Mogok area of Northern Myanmar. Although the Sri Lankan stones were an attractive greenish or violetish blue, the dark black Burmese stones were still fetching prices of hundreds $ per ct. when they first appeared.

Serendibite boasts an unusually complex formula consisting of calcium, magnesium, aluminum, silicon, boron and oxygen. It may be confused with sapphirine and zoisite, but can be identified as serendibite on the basis of refractive indices, twinning, and spectroscopic features.

Serendibite Serendibite
Check our Top, Largest, Smallest or Latest Serendibite's.

Serendibite Stats/
Popularity Index: 635880hits
Total Items: 21items
Total Weight: CTS 42.41
Cheapest: USD 7.00
Most Expensive: USD 867.00
Largest: CTS 5.78
Smallest: CTS 0.36
Last Added: 01/05/24 09:14:06

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