See results 1 - 60 of about 60 for synthetic http://www.alexandrite.net/search/ Copyright 2006-2008 Alexandrite.net http://blogs.law.harvard.edu/tech/rss en-gb Thu, 4 Aug 2016 04:48:45 +0100 info@multicolour.com Thu, 4 Aug 2016 04:48:45 +0100 (pics-1.1 "http://www.icra.org/pics/vocabularyv03" l gen true for "http://alexandrite.net" r (n 0 s 0 v 0 l 0 oa 0 ob 0 oc 0 od 0 oe 0 of 0 og 0 oh 0 c 1) gen true for "http://www.alexandrite.net" r (n 0 s 0 v 0 l 0 oa 0 ob 0 oc 0 od 0 oe 0 of 0 og 0 oh 0 c 1)) webmaster@multicolour.com Jabba 2.0 An annotated bibliography of Alexandrite Gemstone Buyer and Collector's Guide http://www.alexandrite.net/chapters/bibliography.html http://www.alexandrite.net/viewpage.html?id=GG-017 Sun, 8 Mar 2009 07:58:53 +0000 Alexandrite idenitifcation at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/-alexandrite-idenitifcation-FRM-165-00005 http://www.alexandrite.net/viewpage.html?id=FRM-165-00005 Tue, 21 Nov 2006 20:09:15 +0000 fluorescence in alexandrite at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/-fluorescence-in-alexandrite-FRM-161-00007 http://www.alexandrite.net/viewpage.html?id=FRM-161-00007 Wed, 25 Oct 2006 13:54:02 +0100 Some alexandrite lasers manafactures at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/-some-alexandrite-lasers-manafactures-FRM-160-00002 http://www.alexandrite.net/viewpage.html?id=FRM-160-00002 Sat, 2 Sep 2006 02:03:00 +0100 what is my alexandrite worth at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/-what-is-my-alexandrite-worth-FRM-161-00013 http://www.alexandrite.net/viewpage.html?id=FRM-161-00013 Sun, 24 Dec 2006 21:10:17 +0000 A misleading term for synthetic alexandrite-like sapphire, which changes color. Also called synthetic alexandrite. http://www.alexandrite.net/chapters/glossary/alexandrine.html http://www.alexandrite.net/viewpage.html?id=GG-086-00001 Sat, 3 Jul 2010 03:55:09 +0100 Named after Russian Tsar Alexander II. A highly dichroic, rare variety of chrysoberyl. Emerald green in natural daylight, reddish in violet by artificial light, due to its unusual absorption properties. One of the hardest and most important gemstones. A f http://www.alexandrite.net/chapters/glossary/alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-086-00002 Sat, 3 Jul 2010 03:55:09 +0100 Alexandrite substitutes at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/alexandrite-substitutes-FRM-324-00004 http://www.alexandrite.net/viewpage.html?id=FRM-324-00004 Fri, 1 May 2009 13:48:00 +0100 Comprehensive guide for buying and evaluating alexandrite gemstones http://www.alexandrite.net/chapters/chapter9/index.html http://www.alexandrite.net/viewpage.html?id=GG-011 Sun, 8 Mar 2009 07:56:23 +0000 A misleading term for both suitably colored synthetic sapphire and spinel, which are used to create alexandrite doublet. http://www.alexandrite.net/chapters/glossary/alexandrite-doublet.html http://www.alexandrite.net/viewpage.html?id=GG-086-00004 Sat, 3 Jul 2010 03:55:10 +0100 Answers to frequently asked questions about alexandrite gemstone identification and value. http://www.alexandrite.net/chapters/faq/index.html http://www.alexandrite.net/viewpage.html?id=GG-012 Sat, 14 Mar 2009 18:00:26 +0000 Alexandrite gemstone buyer and jewelry collector guide holds information on history, lore, value and properties of the chrysoberyl varieties, including alexandrite and cymophane gemstones. http://www.alexandrite.net/chapters/index.html http://www.alexandrite.net/viewpage.html?id=GG-002 Sun, 15 Mar 2009 03:04:25 +0000 Collection of myths, legends and lore surrounding the alexandrite gemstone http://www.alexandrite.net/chapters/chapter8/index.html http://www.alexandrite.net/viewpage.html?id=GG-010 Sun, 8 Mar 2009 07:56:21 +0000 Guide to synthetic alexandrite production, alexandrite imitations and the differences between natural and synthetic alexandrite http://www.alexandrite.net/chapters/chapter7/index.html http://www.alexandrite.net/viewpage.html?id=GG-009 Sun, 8 Mar 2009 07:56:20 +0000 Alexandrite Synthetics and Imitations at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/topic/alexandrite-synthetics-and-imitations-FRM-324 http://www.alexandrite.net/viewpage.html?id=FRM-324 Sat, 28 Mar 2009 05:34:42 +0000 Suitably-colored, synthetic sapphire and spinel, used to imitate alexandrite. http://www.alexandrite.net/chapters/glossary/alexandrite-like-synthetics.html http://www.alexandrite.net/viewpage.html?id=GG-086-00008 Sat, 3 Jul 2010 03:55:12 +0100 Book Announcement: Russian Alexandrites by Karl Schmetzer at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/topic/book-announcement-russian-alexandrites-by-karl-sch-FRM-361 http://www.alexandrite.net/viewpage.html?id=FRM-361 Wed, 11 Aug 2010 04:12:00 +0100 Book Announcement: Russian Alexandrites by Karl Schmetzer at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/topic/book-announcement-russian-alexandrites-by-karl-sch-FRM-362 http://www.alexandrite.net/viewpage.html?id=FRM-362 Wed, 11 Aug 2010 04:12:00 +0100 A grayish-white, hard, brittle, non-corrosive metallic element in the Group VIB of the Periodic System, obtained from chromite. One of the eight metallic elements, mainly responsible for green or red color in very important gem minerals such as emerald, r http://www.alexandrite.net/chapters/glossary/chromium.html http://www.alexandrite.net/viewpage.html?id=GG-088-00005 Sat, 3 Jul 2010 03:55:19 +0100 Chronological history timeline, depicting the history of the alexandrite gemstone and it’s roots http://www.alexandrite.net/chapters/chronology-on-the-history-of-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-014 Sun, 8 Mar 2009 07:58:51 +0000 A hard, important gem mineral, of which alexandrite and cymophane are two varieties. Occasionally a greenish chatoyancy can be seen which was formerly known as cymophane, but is now called chrysoberyl cat's eye, or oriental cat's eye, when cut en cabochon http://www.alexandrite.net/chapters/glossary/chrysoberyl.html http://www.alexandrite.net/viewpage.html?id=GG-088-00006 Sat, 3 Jul 2010 03:55:19 +0100 Classic alexandrite story at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/classic-alexandrite-story-FRM-175-00001 http://www.alexandrite.net/viewpage.html?id=FRM-175-00001 Thu, 18 Oct 2007 05:48:03 +0100 There are four major methods of changing the colors of gemstones. These are surface painting or foiling the back, oiling, coating, impregnating, staining of porous stones, heat treatment, and irradiation by particles of atomic size and X-rays. The color c http://www.alexandrite.net/chapters/glossary/color-change.html http://www.alexandrite.net/viewpage.html?id=GG-088-00008 Sat, 3 Jul 2010 03:55:21 +0100 An aluminum oxide, it occurs as shapeless grains and masses (emery), rhombohedral crystals. Ruby contains traces of chromium oxide, when red and Fe2O3, which modified the color. The color of sapphire results from a combination of titanium and iron oxides, http://www.alexandrite.net/chapters/glossary/corundum.html http://www.alexandrite.net/viewpage.html?id=GG-088-00009 Sat, 3 Jul 2010 03:55:21 +0100 A method of growing synthetic crystal by high-melting point devised by Czochralski and is named as Czochralski pulling technique. Where a seed crystal is gently lowered until it is in contrast with pure melt in the crucible and it is then pulled slowly up http://www.alexandrite.net/chapters/glossary/czochralski-technique.html http://www.alexandrite.net/viewpage.html?id=GG-088-00015 Sat, 3 Jul 2010 03:55:23 +0100 Deciding Between Natural and Synthetic Alexandrite at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/topic/deciding-between-natural-and-synthetic-alexandrite-FRM-416 http://www.alexandrite.net/viewpage.html?id=FRM-416 Fri, 18 Feb 2011 01:27:32 +0000 Definition of Alexandrine at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/topic/definition-of-alexandrine-FRM-304 http://www.alexandrite.net/viewpage.html?id=FRM-304 Thu, 19 Mar 2009 23:47:00 +0000 Different colors of alexandrite at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/different-colors-of-alexandrite-FRM-347-00001 http://www.alexandrite.net/viewpage.html?id=FRM-347-00001 Thu, 6 Aug 2009 10:37:53 +0100 Inclusions, which are produce by hydrothermal synthetic emeralds by presence of wispy or veillike groups, manufactured by Chatham, Gilson, and Zerfass. That is an unmistakable characteristic of flux-fusion or flux-melt method. http://www.alexandrite.net/chapters/glossary/flux-inclusions.html http://www.alexandrite.net/viewpage.html?id=GG-091-00003 Sat, 3 Jul 2010 03:55:28 +0100 This is a technique used to make certain synthetic gemstones such as emerald, ruby, spinel, quartz, Alexandrite, YAG, etc., man-made crystals growing in a high melting solvent or flux. The material or composition of desired synthetic crystal (beryllium an http://www.alexandrite.net/chapters/glossary/flux-fusion-method.html http://www.alexandrite.net/viewpage.html?id=GG-091-00004 Sat, 3 Jul 2010 03:55:29 +0100 Synthetic alexandrite crystals are made by flux-fusion method by annexing Fe, and Cr manufactured in USA and Japan. http://www.alexandrite.net/chapters/glossary/flux-grown-synthetic-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-091-00005 Sat, 3 Jul 2010 03:55:29 +0100 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 http://www.alexandrite.net/chapters/glossary/gemstone.html http://www.alexandrite.net/viewpage.html?id=GG-092-00002 Sat, 3 Jul 2010 03:55:30 +0100 Glossary of terms that have been discussed or mentioned at Alexandrite gemstone buyer and collectors guide http://www.alexandrite.net/chapters/glossary/index.html http://www.alexandrite.net/viewpage.html?id=GG-016 Sun, 8 Mar 2009 07:58:52 +0000 http://www.alexandrite.net/chapters/faq/how-can-i-spot-the-difference-between-a-natural-and-a-synthetic-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-0132 Tue, 29 Jul 2008 13:02:11 +0100 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 http://www.alexandrite.net/chapters/faq/what-are-the-chances-an-alexandrite-purchased-in-the-50s-is-natural.html http://www.alexandrite.net/viewpage.html?id=GG-0133 Sat, 14 Mar 2009 15:56:03 +0000 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 http://www.alexandrite.net/chapters/glossary/imitation.html http://www.alexandrite.net/viewpage.html?id=GG-094-00001 Sat, 3 Jul 2010 03:55:08 +0100 A promotion term for synthetic alexandrite or alexandrite cat's-eye made by Kyocera company, Japan. http://www.alexandrite.net/chapters/glossary/inamori-synthetic-pulled-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-094-00002 Sat, 3 Jul 2010 03:55:07 +0100 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 http://www.alexandrite.net/chapters/glossary/inclusions.html http://www.alexandrite.net/viewpage.html?id=GG-094-00005 Sat, 3 Jul 2010 03:55:06 +0100 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 http://www.alexandrite.net/chapters/faq/is-there-a-difference-between-russian-and-brazilian-alexandrite-gemstones.html http://www.alexandrite.net/viewpage.html?id=GG-0120 Tue, 12 Aug 2008 03:41:53 +0100 A fashioned ornament for personal adornment, which is made of noble metals mounted with natural, synthetic, or imitation gemstones. http://www.alexandrite.net/chapters/glossary/jewel.html http://www.alexandrite.net/viewpage.html?id=GG-095-00001 Sat, 3 Jul 2010 03:54:47 +0100 Flux-grown synthetic ruby, flus-fusion method. http://www.alexandrite.net/chapters/glossary/kashan-flux-grown-rubies.html http://www.alexandrite.net/viewpage.html?id=GG-096-00003 Sat, 3 Jul 2010 03:54:46 +0100 Information about melt and flux techniques used for the synthetic alexandrite manufacturing http://www.alexandrite.net/chapters/chapter7/methods-of-producing-synthetic-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-018 Sun, 8 Mar 2009 08:02:20 +0000 Methods of Producing Synthetic Alexandrite at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/topic/methods-of-producing-synthetic-alexandrite-FRM-159 http://www.alexandrite.net/viewpage.html?id=FRM-159 Sat, 2 Sep 2006 01:30:00 +0100 My mother has an Alexandrite ring she may wish to sell at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/my-mother-has-an-alexandrite-ring-she-may-wish-to-sell-FRM-357-00001 http://www.alexandrite.net/viewpage.html?id=FRM-357-00001 Tue, 25 May 2010 07:18:57 +0100 A mineral or substance, which occurs in nature; opposite of synthetic or man-made. http://www.alexandrite.net/chapters/glossary/natural.html http://www.alexandrite.net/viewpage.html?id=GG-099-00001 Sat, 3 Jul 2010 03:55:33 +0100 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. http://www.alexandrite.net/chapters/glossary/novosibirsk-synthetic-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-099-00005 Sat, 3 Jul 2010 03:54:41 +0100 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. http://www.alexandrite.net/chapters/glossary/perovskite.html http://www.alexandrite.net/viewpage.html?id=GG-101-00002 Sat, 3 Jul 2010 03:54:38 +0100 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 http://www.alexandrite.net/chapters/glossary/quench-crackled-synthetic-corundum.html http://www.alexandrite.net/viewpage.html?id=GG-102-00003 Sat, 3 Jul 2010 03:54:54 +0100 Re: My mother has an Alexandrite ring she may wish to sell at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/re-my-mother-has-an-alexandrite-ring-she-may-wish-to-sell-FRM-357-00002 http://www.alexandrite.net/viewpage.html?id=FRM-357-00002 Thu, 9 Dec 2010 02:01:01 +0000 Re: Zandrite at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/re-zandrite-FRM-324-00002 http://www.alexandrite.net/viewpage.html?id=FRM-324-00002 Sat, 28 Mar 2009 12:20:00 +0000 russian alexandrites at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/russian-alexandrites-FRM-162-00008 http://www.alexandrite.net/viewpage.html?id=FRM-162-00008 Tue, 24 Apr 2007 03:48:41 +0100 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 http://www.alexandrite.net/chapters/glossary/synthetic.html http://www.alexandrite.net/viewpage.html?id=GG-104-00007 Sat, 3 Jul 2010 03:55:03 +0100 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 http://www.alexandrite.net/chapters/glossary/synthetic-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-104-00008 Sat, 3 Jul 2010 03:55:03 +0100 Synthetic alexandrite identification at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/topic/synthetic-alexandrite-identification-FRM-325 http://www.alexandrite.net/viewpage.html?id=FRM-325 Sat, 28 Mar 2009 06:53:00 +0000 Thailand based manufacturer and supplier of synthetic lab grown faceted and rough cubic zirconia, spinel, CZ Russian Diamonds, Synthetic corundum, Synthetic Spinel, Terbium Glass, Quartz, Hydrothermal, Precious & Semi-Precious Gems of vaious shapes, http://www.alexandrite.net/directory/manufacturers/synthetic-gems-wdd-003-00041.html http://www.alexandrite.net/viewpage.html?id=WDD-003-00041 Mon, 30 Mar 2009 12:16:12 +0100 Information about melt, solution growth and vapour deposition techniques used for synthetic gemstones manufacturing http://www.alexandrite.net/chapters/chapter7/synthetic-gemstone-growth-techniques.html http://www.alexandrite.net/viewpage.html?id=GG-019 Sun, 8 Mar 2009 08:02:21 +0000 Synthetic alexandrite predominantly used as a laser and was initially developed for military and government applications http://www.alexandrite.net/chapters/chapter7/the-alexandrite-laser.html http://www.alexandrite.net/viewpage.html?id=GG-032 Sun, 8 Mar 2009 08:02:23 +0000 The Alexandrite Laser at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/the-alexandrite-laser-FRM-160-00003 http://www.alexandrite.net/viewpage.html?id=FRM-160-00003 Wed, 10 Jun 2009 17:49:53 +0100 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 http://www.alexandrite.net/chapters/faq/why-is-natural-alexandrite-better-than-synthetic-alexandrite.html http://www.alexandrite.net/viewpage.html?id=GG-0130 Tue, 29 Jul 2008 13:02:10 +0100 Zandrite at Alexandrite discussion forums | Alexandrite guide http://www.alexandrite.net/discussion/post/zandrite-FRM-324-00001 http://www.alexandrite.net/viewpage.html?id=FRM-324-00001 Sat, 28 Mar 2009 06:22:00 +0000