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Tsarstone collectors guide

Alexandrite guide forums

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Color change synthetic glass imitation of the Alexandrite emerged onto the TV shopping channels recently. Alexandrium - pink to violet color change glass and Zandrite, that exhibits color change due presence of Neodymium from pink in natural light to green under florescent light.
Zandrite is another trade and trademarked name for color changing synthetic glass laced with Neodymium. It was named Zandrite because it sounds like Alexandrite and exhibits color changing characteristics simmilar to Alexandrite. I think this name belongs to Jewelry Television now.
QUOTE (in "Zandrite" by Marisa Spano on Mar 28 2009, 06:22 AM)
Zandrite is another trade and trademarked name for color changing synthetic glass laced with Neodymium.
Recent marketers and TV promoters of synthetic gemstones have started using the term "lab created", "created", "cultured" or "man made" to identify synthetics. Since synthetic corundum has been around for more than 100 years, even my grandmother's alexandrite jewelry might not be genuine.
Alexandrite is chrysoberyl BeAl2O4 with Cr3+ as an impurity, its colour depends on the type of illumination; in fluorescent light blue dominates, while red is predominant when viewed in light from a tungsten lamp. This is the so called "alexandrite effect". The most desirable colour change is rich blue–green to a deep raspberry red, and the shade of the colour can vary.

The impurity that produces the colour in alexandrite is Cr3+, but the ion sits in a different crystal environment and hence experiences a different ligand field. Synthetic alexandrite gemstones have been produced since 1973 and patented by Creative Crystals Inc of San Ramon, California.

Topic page 1 of 1
Methods of Producing Synthetic Alexandrite
Manufacturer found a way to synthetically create Alexandrite
The Alexandrite Laser
Alexandite Questions and Answers
Alexandrite Frequently Asked Questions
Alexandrite buyer's guide. Chapter 9, Alexandrite gemstone buyer and collectors guide.
My grandmothers alexandrite favorite ring
My Grandmother left me her favorite
What is the difference between chrysoberyl and alexandrite?
Chrysoberyl is the species name and Alexandrite is the variety name. Alexandrite is that variety of chrysoberyl that changes color as a function of the light source; green in daylight and red under incandescent light.
Is there a difference between Russian and Brazilian Alexandrite gemstones?
The mining of alexandrite in Russia lasted less than 100 years from the time it was discovered in 1833 to the early 1900’s. It was George Kunz, the gemologist/gemstone buyer for Tiffany & Co that probably did the most to popularize this unique gemst
Definition of Alexandrine
A misleading term for synthetic alexandrite-like sapphire, which changes color. Also called synthetic alexandrite.
Alexandrite Myths, Legends and Lore
Collection of myths, legends and lore surrounding the alexandrite gemstone
The Alexandrite Effect
Discussion about the alexandrite effect as a non-color-constancy phenomenon from the color theory perspective
Synthetic alexandrite identification
Some modern synthetic gemstones look more natural and are more difficult to identify, but an experienced jeweler or gemologist can usually classify them
Alexandrite World Occurrences
Study of all the known historical and confirmed alexandrite deposits and mining operations
What is the june gemstone?
What is the june gemstone - alexandrite, pearl or moonstone?
Are there any other gemstones which change color?
How do alexandrite and color change garnet differ in appearance?
Chrysoberyl Species and Variety
Information about the chrysoberyl mineral, it's properties, varieties and history
Definition of Alexandrite cat's eye
A chatoyant variety of alexandrite, with parallel inclusions. Cut en cabochon, it has a light cat's-eye effects.
Chronological History of Alexandrite
Chronological history timeline, depicting the history of the alexandrite gemstone and it’s roots
Book Announcement: Russian Alexandrites by Karl Schmetzer
Russian Alexandrites is illustrated with more than 200 colour figures and photographs, addresses mineralogists, gemmologists, historians, mineral and gem collectors as well as all members of the gem trade.
Book Announcement: Russian Alexandrites by Karl Schmetzer
Russian Alexandrites is illustrated with more than 200 colour figures and photographs, addresses mineralogists, gemmologists, historians, mineral and gem collectors as well as all members of the gem trade.
New Book: Russian Alexandrites by Dr. Karl Schmetzer
I am sure everyone will be interested in this. I have just received a review copy of Russian Alexandrites and will be posting a review on...
need advice as quickly as possible
My home burned completely. I lost two Alexandrite rings. I lived in Turkey in 1962. My father was an officer and bought from a very...
re: advice
I have the destroyed ring. the stone measure 14mm
Deciding Between Natural and Synthetic Alexandrite
Hello Everyone, My boyfriend (soon to be fiancee) and I are looking at getting an Alexandrite as the stone for our engagement ring. We are...
How much will a typical one carat alexandrite gemstone cost?
The retail replacement cost for a 1ct. alexandrite could be anywhere between $500 to $12,000 per carat. The intensity of the color change and the attractiveness of the colors are the most important factors in determining the value of an alexandrite. With
Is alexandrite the most expensive gemstone in the world?
Along with diamonds, rubies, and emeralds, top quality alexandrites are among the most expensive gemstones in the world. In larger sizes over 4.00 or 5.00cts., Burmese rubies are more rare and expensive than alexandrites but in sizes below 1.00cts., alexa


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