Any rough mineral or other material natural or synthetic, which possesses the necessary attractiveness, brilliance, beauty, rarity, color dispersion, refraction, color or colorless, flawless, portability, fashionably, and durability for use in gem industr
It is very unlikely that even an old alexandrite ring could contain a natural alexandrite. Natural alexandrites, especially large clean stones are extremely rare and almost never available at any price. Most old inherited alexandrite rings are actually sy
To result something of a genuine article or natural gemstone or simulate it from any material that imitate by its color, the appearance of a natural gemstone. Imitation gemstone having wholly different physical properties and chemical composition, and hen
A general name for any small visible foreign matter such as gas, liquid, glass, or mineral enclosed within a gemstone or rock, which is a growth phenomena. Fracture or cleavage in a gemstone are not classed as inclusions. The nature of inclusions are used
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
Synthetic alexandrite made in three methods in Russia, (a) growing synthetic stones of solution-growth process or flux process specially for alexandrite, (b) Growing stone of floating-zone process. (c) Melt-grown process or so-called pulling method.
Prized by collectors. Synthetic strontium titanate or fabulite found in a similar manner to perovskite. Natural counterpart of fabulite with the same composition is called tausonite.
An unusual feature occur in Verneuil synthetic corundum by plunging of still heated stone into a much cooler liquid (thermal shock), which create fractures and it resemble closely to natural stone. By pursuing of this process developed honeycomb pattern d
Artificially made substance that has the same appearance, physical properties and chemical compound as its natural counterpart mineral. Some synthetic stones have no counterpart in nature they are synthetic gemstones except if they used as an imitation fo
A misleading term for synthetic spinel or corundum (sapphire), which is able to change color like alexandrite reddish-green in daylight and reddish at artificially light, such stones were at first misnomered as scientific alexandrite. Synthetic sapphire
Natural alexandrite is not better than synthetic alexandrite but natural alexandrite is very rare and uncommon in modern jewelry because it is hardly ever available and because it is too expensive for the general public to buy. Even lower quality more inc