Results 81 to 90 of about 941 (201)
Color Genesis and Compositional Characteristics of Color-Change Sapphire from Fuping, China
Crystals, 2022 The color-change sapphire occurs in sillimanite-biotite gneiss in Fuping County Hebei province, China, is one of most famous sapphire deposits in China.
Hui Wang +4 more
doaj +1 more source
Caracterização Gemológica das Ametistas com Alta Birrefringência de Santa Quitéria [PDF]
, 2020 A ametista é um mineral pertencente ao grupo do quartzo, ocorre nas cores violeta, lilás e roxa, e pode ser utilizado como gema. Sua ocorrência está relacionada principalmente a geodos, pegmatitos e jazidas aluvionares.
Maciel, Eryckson de Lima +4 more
core +2 more sources
Mineralogia, gemologia e potencial sócioeconômico dos coríndons da Bahia [PDF]
, 2021 O território baiano possui associações geológicas altamente favoráveis à formação de depósitos de coríndon, quando comparados com alguns dos principais distritos produtores deste mineral no mundo.
Correa, Monica
core
Yankuang ceshi, 2016 Due to the nondestructive requirements of gem testing, evaluation of precious stones shows characteristics of science and uncertainty. Gemological application of X-ray Diffraction (XRD) is specialized, with its application mainly concentrated in three ...
ZHANG Ni, LIN Chun-ming
doaj +1 more source
Special Libraries, July-August 1951 [PDF]
, 1950 Volume 42, Issue 6https://scholarworks.sjsu.edu/sla_sl_1951/1005/thumbnail ...
Special Libraries Association
core +2 more sources
Gemological Characteristics of Aquamarine from the Gilgit-Baltistan of Northern Areas, Pakistan
Journal of the mineralogical society of korea, 2015 We applied gemological analytical approaches on Aquamarine from the Gilgit-Baltistan of Northern Areas, Pakistan. The standard gemological testing indicates that they are consistent with general characteristics of natural aquamarines. We have identified the inclusions of Tantalite-Mn by Raman analysis.
Sung Jae Kim +3 more
openaire +1 more source
The Greater Boston Housing Report Card 2013: What Follows The Housing Recovery? [PDF]
, 2013 This report is the 11th in the series of annual "Greater Boston Housing Report Cards," the first of which appeared in 2002 at a time when housing prices in the region were skyrocketing.
Barry Bluestone +6 more
core
Gemtelligence: Accelerating Gemstone classification with Deep Learning
, 2023 The value of luxury goods, particularly investment-grade gemstones, is greatly influenced by their origin and authenticity, sometimes resulting in differences worth millions of dollars. Traditionally, human experts have determined the origin and detected
Bendinelli, Tommaso +6 more
core
"Hopovo" gemstone occurrence (Fruška gora) [PDF]
Tehnika, 2020 This study presents geological, mineralogical, and gemological characteristics of gemstone deposit (silica and carbonate minerals) that occur in Mesozoic Fruška gora ultramafites in the vicinity of Hopovo Monastery.
Miladinović Zoran Ž.
doaj
Известия высших учебных заведений: Геология и разведка, 2019 For the first time, data on the mineral composition and gemological characteristics of the jewelry-ornamental ammonites of the Republic of Adygea have been presented.
D. A. Petrochenkov
doaj +1 more source