Add to ORKGThe variations of color in minerals makes the difference between a valuable gem and a worthless stone. So, naturally, there are many ingenious ways to manipulate that color. A mineralogist describes some of the pitfalls that can accompany artificially colored gemstones
Gemstones are defined as rare minerals having a high clarity, a high hardness and showing a bright ...
Heat treatment of sapphires can produce a richer more vibrant color in this gem, but not for all sap...
Plunging into the nanoworld, Caltech scientists find some new minerals and dispel some old myths alo...
The variations of color in minerals makes the difference between a valuable gem and a worthless sto...
Gems are well-compressed small pieces found in mineral deposits found inside earth. Pearls and amber...
Advances in technology have brought great advances in our ability to impart color to natural gemst...
Studies concerning the origin of color in gem materials have grown in sophistication in recent yea...
Pure feldspar, free of exsolution, is colorless. However, minor chemical substituents, inclusions, ...
The present study has been directed towards investigating quantitative measurements of colours in mi...
In its pure form, diamond is colorless. However, in nature (or even when made in laboratories), diam...
Pleochroism plays an important role in determining the face-up visual color appearance of faceted, o...
Minerals were displayed in wonder rooms for their beauty and used by apothecaries for their medical ...
The previous two articles in this series described the origins of color in gems that derive from iso...
A precise and shared description of gemstones color could greatly help their classification and mark...
124-131Diamond is well known hardest material and has been prized for centuries as a gem stone for j...
Gemstones are defined as rare minerals having a high clarity, a high hardness and showing a bright ...
Heat treatment of sapphires can produce a richer more vibrant color in this gem, but not for all sap...
Plunging into the nanoworld, Caltech scientists find some new minerals and dispel some old myths alo...
The variations of color in minerals makes the difference between a valuable gem and a worthless sto...
Gems are well-compressed small pieces found in mineral deposits found inside earth. Pearls and amber...
Advances in technology have brought great advances in our ability to impart color to natural gemst...
Studies concerning the origin of color in gem materials have grown in sophistication in recent yea...
Pure feldspar, free of exsolution, is colorless. However, minor chemical substituents, inclusions, ...
The present study has been directed towards investigating quantitative measurements of colours in mi...
In its pure form, diamond is colorless. However, in nature (or even when made in laboratories), diam...
Pleochroism plays an important role in determining the face-up visual color appearance of faceted, o...
Minerals were displayed in wonder rooms for their beauty and used by apothecaries for their medical ...
The previous two articles in this series described the origins of color in gems that derive from iso...
A precise and shared description of gemstones color could greatly help their classification and mark...
124-131Diamond is well known hardest material and has been prized for centuries as a gem stone for j...
Gemstones are defined as rare minerals having a high clarity, a high hardness and showing a bright ...
Heat treatment of sapphires can produce a richer more vibrant color in this gem, but not for all sap...
Plunging into the nanoworld, Caltech scientists find some new minerals and dispel some old myths alo...