Posts by "David Weinberg"
1.
Causes of color change in malaia and color changing garnets /at Apr 9 2009,9:04 AM in Colour change garnet /
Garnet color change could also be influenced by the needle like inclusions of rutile or actinolite
2.
Colour change garnet vs Alexandrite /at Apr 7 2009,10:04 AM in Colour change garnet /
Color change comparison between alexandrite and color change garnet
3.
Color change garnet vs Alexandrite
/at Apr 5 2009,1:04 AM in Are there any other gemstones which change color? /
Color change garnets are notable for their color change throughout the day as a function of their sensitivity to the different color temperatures
4.
A very large Alexandrite /at Apr 4 2009,3:04 AM in A very large Alexandrite /
Large chrysberyl
5.
Alexandrite mining in Ilakaka /at Apr 3 2009,10:04 AM in Ilakaka alexandrite deposit location /
The government recently moved the gemstone buying area a few kilometers out of Ilakaka.
6.
Alexandrite - perfect engagement ring
/at Apr 2 2009,6:04 AM in Alexandrite engagement ring? /
Large alexandrites are extremely rare and often more expensive than diamonds.
