Boninite, also known as Green Serendibite, is an incredibly rare gemstone that has only recently been discovered. Here’s a breakdown of its fascinating story and characteristics:

A Surprise Discovery (1996):

• For many years, the mineral Serendibite held the title of the world’s rarest gem.
• In 1996, a gemologist in Sri Lanka named Dunil Palitha Gunasekara discovered a new type of gemstone while attending a gem gathering event.
• Initially mistaken for Kornerupine due to its blue-green color, further analysis revealed it to be a unique gem species.

Honoring a Legacy:

• Gunasekara named the newfound gem “Boninite” after his mother, Bonny Matilda Gunasekara.
• The additional term “Green Serendibite” reflects its resemblance to the original Serendibite mineral.

Distinguishing Features:

• Color: Boninite displays a vibrant blue-green color, often mistaken for Kornerupine.
• Rarity: With only a limited number of specimens found, Boninite is a true collector’s gem.
• Identification: Refractive index, spectroscopic analysis, and chemical composition help distinguish Boninite from other gems.

Unique Characteristics:

• Crystal Form: Unlike typical gemstones, Boninite’s triclinic crystal form is not prominent on the exterior.
• Microscopic inclusions: Liquid feathers, parallel milky lines, and tiny crystals may be present within the gem.
• Dichroism: This gem exhibits a distinct blue-green color variation when viewed from different angles.
• Physical Properties: Boninite has a refractive index of 1.697 – 1.702 and a specific gravity of 3.42 – 3.52.
• Chemical Composition: Calcium, sodium, aluminum, magnesium, iron, silicon, boron, and oxygen are the key elements found in Boninite.

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