Geuda is a form of the mineral corundum. Geuda is found primarily in Sri Lanka. It’s a semitransparent and milky appearance due to rutile inclusions. Geuda is used to improve its color by heat treatment. Some geuda varieties turn to a blue color after heat treatments and some turn to red after oxidizing. Also, Kowangu pushparaga turns to yellow […]
Andalusite is an aluminium nesosilicate mineral with the chemical formula Al2SiO5. Andalusite is isomorphic with kyanite and sillimanite, being the lower pressure mid-temperature polymorph. Andalusite is a which forms under low pressure and low to high temperatures. The minerals kyanite and sillimanite are polymorphs of andalusite, each occurring under different temperature-pressure regimes. Andalusite is orthorhombic crystal mineral with 6.5 – […]
Garnets are a group of silicate minerals. All species of garnets possess similar physical properties and crystal forms but differ in chemical composition Such as Pyrope Mg3Al2Si3O12, Almandine Fe3Al2Si3O12, Spessartine Mn3Al2Si3O12, Andradite Ca3Fe2Si3O12, Grossular Ca3Al2Si3O12, Uvarovite Ca3Cr2Si3O12. Most Garnets have a variable magnetic attraction. This characteristic also uses to identify garnet. Pyrope – almandine – […]
Beryl is a mineral composed of beryllium aluminum cyclosilicate with the chemical formula Be₃Al₂Si₆O₁₈. Beryl is hexagonal mineral with 7.5 – 8 hardness according to the more hardness scale. Beryl hexagonal Crystals can be up to several meters in the size. But, Double terminated crystals are very rare to see. Save Most people know Aquamarine […]
Spinel is the magnesium aluminium member of the larger spinel group of minerals with chemical formula MgAl₂O₄ This oxide mineral is Cubic crystal system with 7.5–8.0 hardness according to Mohs hardness scale. Spinels Specific Gravity is depending on the composition of chemicals such as Zn-rich spinel can be as high as 4.40, otherwise it averages […]
Kornerupine 柱晶石 Kornerupine is a rare boro-silicate mineral with the formula (Mg, Fe²⁺)₄(Al, Fe³⁺)₆(SiO₄, BO₄)₅(O, OH)₂. It has a specific gravity of 3.3 to 3.34 and Colours such as Colorless, white, grey, greenish, bluish, brown, black. Some Stones show strong Pleochroism such as colorless to green, colorless, pale brownish yellow, pale yellowish green, pale brownish green and […]
iolite is a magnesium iron aluminium cyclosilicate Mineral. also Know as ” Cordierite”. It is magnesium rich Stone chemical formula (Mg,Fe)2Al4Si5O18. that iron rich mineral called ” sekaninaite”. Healing Properties 👇 Iolite are stones of vision, stimulate the imagination and this may aid their use as shamanic stones. It activates the third eye and facilitates visualisation and intuitive […]
Ceylon Natural Enstatite 頑火輝石（頑辉石） Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite – ferrosilite. Emerald green variety of enstatite is called chrome-enstatite. Mostly, That green is because of Chromium. Even though, Enstatite has weak double reflection (DR), It has strong Pleochroism. • Formula : MgSiO3 • Crystal System : […]
Extremely Rare Gemstone – Natural Grandidierite Grandidierite is an extremely rare mineral and gem that was first discovered in 1902 in southern Madagascar. Grandidierite is nesosilicates mineral with the chemical formula (Mg, Fe2+)(Al, Fe3+)3(SiO4)(BO3)O2. It is found colors such as Bluish-green, greenish-blue with 7½ hardness according to the more hardness scale. Grandidierite can be seen […]
Ratnapura is a major city in Sri Lanka. It is the capital city of Sabaragamuwa Province, as well as the Ratnapura District, and is a traditional center for the Sri Lankan gem trade.It is located on the Kalu Ganga in south-central Sri Lanka, about 101 km southeast of the country’s capital, Colombo.The name ‘Ratnapura’ is […]
