Results 61 to 70 of about 1,971 (197)

Geological Setting and Solid Mineral Potentials of Southern Borno, Northeastern Nigeria

open access: yesArid Zone Journal of Engineering, Technology and Environment, 2020
This research work has principally succeeded in updating the geological map of Southern Borno and brought out zeolite as one of the prominent solid minerals to work on.
S. Baba, B. Shettima, H.I. Kamale
doaj  

Digital Marking of Jewelry: Leveling the Risks of Implementation [PDF]

open access: yesФинансовый журнал
The possibility of leveling the risks of introducing digital labeling of jewelry is of significant interest at the current stage of functioning of the state integrated information system in the field of turnover of precious metals, gemstones and articles
Ludmila N. Ivanova, Olga V. Umgaeva
doaj   +1 more source

Gemstones from Vigna Barberini at the Palatine Hill (Rome, Italy)

open access: yes, 2011
This study investigates 25 gemstones (23 intaglios and two undecorated cabochon, used between the third quarter of the first century ad and the second century ad) found in the archaeological excavations performed at 'Vigna Barberini', in the north-east ...
Gliozzo E.   +4 more
core   +1 more source

Gemstones, lapidary materials, and geologic collectables in Wyoming

open access: yes, 1990
Gemstones, lapidary materials, and geologic collectables in ...
W.M. Sutherland (10070002)
core   +1 more source

Modeling the Color Characteristics of Sapphires through the Statistical Method and Function Simulation Method

open access: yesApplied Sciences
The aim of this study was to explore the feasibility of quantitatively evaluating a sapphire’s color by analyzing gemstone images. The color characteristics of gemstones through photography and color extraction were accurately captured, and the key color
Fukang Liu   +3 more
doaj   +1 more source

Tropical Gemstones

open access: yes
Learn the essentials of Asian gemestones with this useful and portable reference book. Gemstones, both mythical and real, are deeply embedded in the arts, religions and cultures of Asia.
Clark,Carol.
core  

Silver Brooch with Yellow Gemstones

open access: yes, 2010
Silver brooch with yellow gemstones; square gem in the centre - from the The Betty Smithers Design Collection at Staffordshire University.
The Betty Smithers Design Collection at Staffordshire University   +1 more
core  

Gemstones Supply Chain Management through Blockchain Mechanism

open access: yes
The provenance of gemstones significantly enhances their value. However, both conventional supply chain management and digital systems are susceptible to counterfeiting, loss, and theft.
Ahsan, Talha   +3 more
core   +1 more source

Natural Gemstones

open access: yes
This United States Geological Survey (USGS) site highlights information about gemstones. The geologic environment of formation, as well as gem terminology are discussed.

core  

The (lack of) power of gemstones

open access: yes, 2014
By Marieke Hendriksen The idea of gemstones having curative powers has existed from ancient times until the present day. As I am interested in the use of chemical and mineral substances in eighteenth-century Dutch and particularly Boerhavian medicine, I ...
mariekehendriksen
core  

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