|
INVESTIGATIONS
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Colour |
Location |
Info |
Spectrum |
UVS |
UVL |
Reference |
|
Yttrium oxide - Yttralox artificial
product |
|
|
5.3 |
5.3 |
colourless |
|
2.36ct |
|
|
|
Gems & Gemology 1970 summer,
p192-194 |
TABLES
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Reference |
|
Yttrium oxide - Yttralox artificial
product |
1.92 |
1.92 |
4.84 |
4.84 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
|
Yttrium oxide - Yttralox artificial
product |
1.92 |
1.92 |
4.84 |
5.3 |
Gems, R Webster, 5th edition
1994
|
|
Yttrium oxide - Yttralox artificial
product |
1.92 |
1.92 |
4.84 |
4.84 |
Tables of Gemstone
Identification, Roger Dedeyn, Ivo Quintens, 2007
|
|
Yttrium oxide - Yttralox artificial
product |
|
|
4.84 |
4.84 |
John Sinkakas, Gemstone and
mineral data book,1972
|
CAUSE OF COLOUR
CHEMICAL DATA
(%)