Gemology of Emeralds from Tauá, Brazil [PDF]
In Brazilian territory many occurrences do not have their gemological and optical properties documented or made public. This research aimed to analyze the mineralogical and gemological aspects of emeralds from the city of Tauá (Brazil), utilizing ...
Czar dos Santos, Gabriel +8 more
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Minimizing Visual Defects through Augmentation of Computer Aided Diamond Rough Planning
, 2020 Many computer aided design systems today utilize a workflow where physically accurate rendering of the product is not a functional component of its design process.
Prabhu, Abhijith
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Gemology and Geochemistry of Staurolites from the Casa Nova Region, Brazil [PDF]
The properties of minerals used as gemstones could help or even reveal new aspects about the geological evolution of the region where a mineral was found.
De Sousa Silva, Larissa +6 more
core +1 more source
Gemological characteristics and the quality of sapphire from Krong H’Nang - Dak Lak
Science and Technology Development Journal - Natural Sciences, 2018 Sapphires in Krong H'Nang area have been found mainly in deluvialor alluvial placers which related to Pliocene-lower Pleistocene basaltoid formations (βN2-Q1). Their main colors are dark green, yellow-green, yellow more rarely dark blue, yellow-blue-green.
openaire +2 more sources
Gemological Characteristics and Coloration Mechanism of Vanadium-Bearing Beryl from Nigeria
MineralsVanadium-bearing beryl is a vanadium-bearing variety of green beryl (distinct from emerald) that exhibits an “electro-optical” green (blue-green) color, which has led to its commercial popularity. However, the underlying coloration mechanism remains unclear.
Yunlong Hong +4 more
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A PREMISSA DE SUSTENTABILIDADE DOS DIAMANTES SINTÉTICOS: THE SUSTAINABILITY'S PREMISE OF SYNTHETIC DIAMONDS [PDF]
Diamond is an essential mineral in contemporary society, whether for its practical use in industry or symbolic use in jewellery. Within that, there is a constant demand, partially supplied by synthetic diamonds.
da Cunha Duarte, Lauren +2 more
core +2 more sources
CrystalsWith the increasing market demand for spinels of various colors, purple spinel—long regarded as a symbol of nobility—has attracted growing attention. In this study, pinkish-purple to purple spinels from the Mogok region of Myanmar were systematically ...
Danyu Guo +4 more
doaj +1 more source
Disordered dolomite as an unusual biomineralization product found in the center of a natural Cassis pearl. [PDF]
PLoS One, 2023 Zhou C +6 more
europepmc +1 more source
Gemological characteristics and origin of basalt-related sapphire in Dong Nai province
Science and Technology Development Journal - Natural SciencesBasalt – related sapphire in Thong Nhat District, Dong Nai Province, Vietnam, are found in alkaline basalts and their lateritic weathering layers. This study employs standard gemological methods and advanced analytical techniques such as XRD, EDX, Raman spectroscopy, and FTIR to characterize their gemological properties, crystal chemistry, and ...
Le Ngoc Nang +4 more
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Research gemology and mineralogy characteristics of Tektite in North region of Da Lat City
Science and Technology Development Journal, 2017 Tektite in northern of Da Lat city is a kind of natural glass, formed from meteorite collisions with Earth, have basic elements Si, Al, Fe, Mg. Typical shapes inclued debris, drops, oval, dumbbell, flat sphere, flat mace, short prism with external shape characterized by holes covering the surface.
Man Nguyen Tri Ho +2 more
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