Gemstone Nqe Lus
Yuav cov khoom ua si natural water touron nyob hauv peb lub khw
Tourmaline yog crystalline boron ntses ntxhw. Ib co kab kawm muaj txhuas, hlau, kuj magnesium, sodium, lithium, los yog potassium. Kev faib tawm yog ib qho precious gemstone. nws los ntawm ntau yam xim.
According to the Madras Tamil Lexicon, the name comes from the Sinhalese word “thoramalli”, a group of gemstones found in Sri Lanka. According to the same source, the Tamil “tuvara-malli” comes from the Sinhalese root word. This etymology also comes from other standard dictionaries including the Oxford English Dictionary.
Watermelon Tourmaline los yog Elbaite kuj, yog sodium, lithium, aluminium boro-silicate, nrog cov tshuaj muaj pes tsawg leeg Na (Li1.5Al1.5) AL6Si6O18 (BO3) 3 (OH) 4. Nws yog ib hom kab ntxhiab uas muaj rau tus tswv cuab rau lub suab sib txuas rau cov neeg ncig xyuas tebchaws.
Elbaite cov ntaub ntawv peb series, nrog dravite, kuj nrog fluor-liddicoatite, thiab nrog schorl. Vim yog cov koob no, cov qauv nrau nrog cov qauv zoo rau lub cev tsis tas yuav tsis pom tshwm sim.
As a gemstone, elbaite is also a desirable member of the tourmaline group. Because of the variety and depth of its colours and quality of the crystals. It was originally discovered on the island of Elba, Italy in 1913. It has since been found in many parts of the world. In 1994, we found a major source Canada, at O’Grady Lakes in the Yukon.
Elbaite cov ntaub ntawv nyob rau hauv igneous thiab kuj metamorphic pob zeb thiab cov leeg. Nyob rau hauv koom nrog lepidolite, kuj microcline, thiab spodumene nyob rau hauv granite pegmatites. Nrog andalusite, tseem biotite nyob rau hauv schist, thiab nrog molybdenite thiab cassiterite hauv loj hydrothermal hloov deposits.
Elbaite is allochromatic, meaning trace amounts of impurities. It can tint crystals, and it can be strongly pleochroic. We found elbaite in every color of the rainbow. Some exhibiting multicolor zonation. Finally, microscopic acicular inclusions in some crystals show a sat’s eye effect in polished cabochons.
– Colorless: achroite variety
– Red or pinkish-red: rubellite variety
– Light blue to bluish green: Brazilian indicolite variety
– Green: Brazilian verdelite variety
– Watermelon tourmaline is a variety with a reddish center witg a green outer zone. It looks like watermelon rind. It is evident in cross section slices of prisms. And it often display curved sides.