gemstones

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141. Stunning 10mm Chrysoberyl Cushion 5.67cts: Rare Chrysoberyl (Chrysoberyl) Cushion 5.67cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-cushion-5-67-faceted_ycb146nt
142. Gem Cut 11.7x8mm Chrysoberyl Oval 4.53cts.: Hard to find Chrysoberyl (Chrysoberyl) Oval 4.53cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-4-53-faceted_ycb146ng
143. Bright 13.6mm Chrysoberyl Trillion 8.25cts.: Rare Chrysoberyl (Chrysoberyl) Trillion 8.25cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-trillion-8-25-faceted_CB1267ac
144. Certified Strong Color Change Alexandrite Ov.: Rare Alexandrite (Chrysoberyl) Oval 1.63cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-63-faceted_xax1513ab
145. Stunning Color and Cut 11.7x10.8mm Chrysoberyl: Rare Chrysoberyl (Chrysoberyl) Oval 6.13cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-6-13-faceted_ycb146dp
146. Strong Color Change Alexandrite Oval .47ct.: Rare Alexandrite (Chrysoberyl) Oval 0.47cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-0-47-faceted_yax201ap
147. Alexandrite Pear Shape 1.01cts.: Rare Alexandrite (Chrysoberyl) Pear 1.01cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-pear-1-01-faceted_xax1513aa
148. Certified Natural Alexandrite Oval 1.03cts.: Rare Alexandrite (Chrysoberyl) Oval 1.03cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-03-faceted_xax319bc
149. Outstanding 11x8mm Chrysoberyl Pear 3.43cts: Hard to find Chrysoberyl (Chrysoberyl) Pear 3.43cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-pear-3-43-faceted_ycb146nq
150. Outstanding 11.8x9mm Chrysoberyl Oval 5.46cts: Rare Chrysoberyl (Chrysoberyl) Oval 5.46cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-5-46-faceted_ycb146nw
151. Is alexandrite the most expensive gemstone in the world? at Alexandrite discussion forums | Alexandrite guide: Is alexandrite the most expensive gemstone in the world? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2013-01-22 19:50:31; /discussion/post/is-alexandrite-the-most-expensive-gemstone-in-the-world-FRM-458-00001
152. Certified Natural Alexandrite Oval 1.03cts.: Rare Alexandrite (Chrysoberyl) Oval 1.03cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-03-faceted_yax239ah
153. Outstanding 10x8.7mm Chrysoberyl Ov 3.72cts: Hard to find Chrysoberyl (Chrysoberyl) Oval 3.72cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-3-72-faceted_ycb146np
154. Alexandrite substitutes at Alexandrite discussion forums | Alexandrite guide: Alexandrite substitutes at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-05-01 13:48:00; /discussion/post/alexandrite-substitutes-FRM-324-00004
155. Beautuful Color Change Alexandrite 3.38cts.: Extremely rare Alexandrite (Chrysoberyl) Trillion 3.38cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-trillion-3-38-faceted_XAX335ac
156. Certified Natural Alexandrite Oval 1.33cts.: Rare Alexandrite (Chrysoberyl) Oval 1.33cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-33-faceted_yax324aa
157. Fine Strong Color Change Alexandrite 1.23ct.: Rare Alexandrite (Chrysoberyl) Oval 1.23cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-23-faceted_yax152aa
158. Colored Stone: Colored Stone is owned by Interweave Press. Included among its magazines are Beadwork, Knits, American Artist, and FiberArts. In business since 1975, Interweave Press publishes a growing number of magazines and many books related to fiber, thread, needlew; HTML, 64 Kb, 2009-03-30 11:20:06; /directory/publications/colored-stone-wdd-003-00035.html
159. Certified Moderate Color Change Alexandrite: Rare Alexandrite (Chrysoberyl) Oval 1.7cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-7-faceted_xax319be
160. The Purkinje Effect at Alexandrite discussion forums | Alexandrite guide: The Purkinje Effect at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-04-04 15:21:00; /discussion/post/the-purkinje-effect-FRM-323-00003
161. Luminescence: The emission of certain visible wavelengths of light from a substance other than thermal process, which are used as diagnostic determination of gemstones. It is caused by the emission of photons, when an exited atom within the substance returns to the gro; HTML, 25 Kb, 2008-07-20 13:05:35; /chapters/glossary/luminescence.html
162. Is there a difference between Russian and Brazilian Alexandrite gemstones? at Alexandrite discussion forums | Alexandrite guide: Is there a difference between Russian and Brazilian Alexandrite gemstones? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-19 22:26:42; /discussion/topic/is-there-a-difference-between-russian-and-brazilia-FRM-303
163. Re: Zandrite at Alexandrite discussion forums | Alexandrite guide: Re: Zandrite at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-28 12:20:00; /discussion/post/re-zandrite-FRM-324-00002
164. Nice Color Change Alexandrite Oval 7.46cts.: Extremely rare Alexandrite (Chrysoberyl) Oval 7.46cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-7-46-faceted_XAX334aa
165. Gemstone: 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; HTML, 25 Kb, 2008-07-20 13:04:30; /chapters/glossary/gemstone.html
166. American Gemological Laboratories: American Gemological Laboratories is a unit of Collectors Universe, the leading provider of value-added authentication and grading services for high-value collectibles and gemstones, which was founded in 1986 and publicly traded since 1999. In 1977, Ameri; HTML, 65 Kb, 2009-03-15 03:14:21; /directory/laboratories/american-gemological-laboratories-wdd-003-00020.html
167.: David Wein is an online fine jewelry store in association with Multicolour.com, the world´s most eclectic favourite online gemstone retailer. David Wein brings together an exquisite range of fine jewelry at exceptional value. Visitors will find an e; HTML, 63 Kb, 2009-03-15 00:14:55; /directory/jewelers/david-wein-wdd-003-00006.html
168. Alexandrite: 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; HTML, 25 Kb, 2008-07-20 13:02:54; /chapters/glossary/alexandrite.html
169. David Wein: David Wein is an online fine jewelry store in association with Multicolour.com, the world´s most eclectic favourite online gemstone retailer. David Wein brings together an exquisite range of fine jewelry at exceptional value. Visitors will find an e; HTML, 64 Kb, 2009-03-15 01:14:43; /directory/jewelers/david-wein-wdd-003-00005.html
170. Re: Buying Alexandrite at Alexandrite discussion forums | Alexandrite guide: Re: Buying Alexandrite at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2007-08-02 15:09:15; /discussion/post/re-buying-alexandrite-FRM-134-00001
171. Synthetic: 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; HTML, 25 Kb, 2008-07-20 13:06:58; /chapters/glossary/synthetic.html
172. Book review: Russian Alexandrites at Alexandrite discussion forums | Alexandrite guide: Book review: Russian Alexandrites at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2010-11-27 21:21:00; /discussion/post/book-review-russian-alexandrites-FRM-362-00001
173. Book review: Russian Alexandrites at Alexandrite discussion forums | Alexandrite guide: Book review: Russian Alexandrites at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2010-11-27 21:21:00; /discussion/post/book-review-russian-alexandrites-FRM-362-00003
174. Alexandrite Garnet at Alexandrite discussion forums | Alexandrite guide: Alexandrite Garnet at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-04-04 14:26:00; /discussion/post/alexandrite-garnet-FRM-341-00001
175. AIGS Gemological Laboratory: First professional gemological laboratory to be established in Asia in 19978, - The AIGS Gemological Laboratory is a private, independent gemological laboratory, member of the Thai Gem and Jewelry Traders Association (TGJTA), and The International Colored; HTML, 65 Kb, 2009-03-15 02:39:58; /directory/laboratories/aigs-gemological-laboratory-wdd-003-00014.html
176. color grading alexandrite at Alexandrite discussion forums | Alexandrite guide: color grading alexandrite at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2006-11-27 05:12:12; /discussion/post/-color-grading-alexandrite-FRM-167-00002
177. Book review: Russian Alexandrites at Alexandrite discussion forums | Alexandrite guide: Book review: Russian Alexandrites at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2010-11-27 21:21:00; /discussion/post/book-review-russian-alexandrites-FRM-362-00002
178. Ultrasonic cleaning: A device for cleaning dirt and other foreign particles from gemstones and jewelry articles by subjecting them to ultrasonic vibrations immersed in water or other solvent. The articles must be free of stress flaws. Glass lenses and other bodies can be poli; HTML, 24 Kb, 2008-07-20 13:07:17; /chapters/glossary/ultrasonic-cleaning.html
179. Alexandrite Questions, Answers and a Quick Reference: The quick reference to how to select, buy and enjoy alexandrite gemstones and jewelry; HTML, 30 Kb, 2009-03-14 17:33:16; /alexandrite.html
180. Imitation: 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; HTML, 25 Kb, 2008-07-20 13:04:51; /chapters/glossary/imitation.html
181. Flux-fusion method: 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; HTML, 24 Kb, 2008-07-20 13:04:23; /chapters/glossary/flux-fusion-method.html
182. Synthetic alexandrite identification at Alexandrite discussion forums | Alexandrite guide: Synthetic alexandrite identification at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-28 06:53:00; /discussion/topic/synthetic-alexandrite-identification-FRM-325
183. SSEF: SSEF laboratory offers analysis of precious stones and issue test reports for diamonds, coloured stones and pearls. It was recognized in 1978 by the International Confederation of Jewellers and Goldsmiths (CIBJO and also a member of the International Colo; HTML, 65 Kb, 2009-03-15 03:08:12; /directory/laboratories/ssef-wdd-003-00018.html
184. Natural Alexandrite Ring at Alexandrite discussion forums | Alexandrite guide: Natural Alexandrite Ring at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-09-16 05:59:23; /discussion/post/natural-alexandrite-ring-FRM-171-00003
185. Hardness: The quality of resistance or property of minerals, gemstones, etc., which is determined by reference to an empirical scale of standard of minerals. Hardness is the resistance of a mineral offered to abrasion or scratching (scelerometric). The absolute har; HTML, 25 Kb, 2008-07-20 13:04:40; /chapters/glossary/hardness.html
186. Angelica at Alexandrite discussion forums | Alexandrite guide: Angelica at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-09-07 08:23:09; /discussion/topic/angelica-FRM-351
187. The Gem and Jewelry Institute of Thailand: IT Gem Testing Laboratory (GIT-GTL), has been accredited by The World Jewellery Confederation (CIBJO) as the CIBJO Registered Laboratory since May 2000.; HTML, 65 Kb, 2009-03-15 02:46:44; /directory/laboratories/the-gem-and-jewelry-institute-of-thailand-wdd-003-00015.html
188. Hong Kong Gems Laboratory: Established in 1987, Hong Kong Gems Laboratory is well equipped and recognized by gemologists and industry professionals. Full-service lab offers FTIR spectrophotometerservice, which provides evidence for jadeite jade and diamond, corundum, emerald and ot; HTML, 65 Kb, 2009-03-15 02:25:21; /directory/laboratories/hong-kong-gems-laboratory-wdd-003-00011.html
189. Spectroscope: A small hand optical device for obtaining and visually observing spectrum, in which collimated light passes through a narrow slit onto either a prism or diffraction grating, its spectrum being viewed by a lens system or telescope. The angle between the c; HTML, 24 Kb, 2008-07-20 13:06:53; /chapters/glossary/spectroscope.html
190. Colour change garnet, Malaia garnet and malaya garnet at Alexandrite discussion forums | Alexandrite guide: Colour change garnet, Malaia garnet and malaya garnet at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-04-08 08:21:00; /discussion/post/colour-change-garnet-malaia-garnet-and-malaya-garnet-FRM-342-00002
191. The Weinman Mineral Gallery: The museum features four main galleries: The Weinman Mineral Gallery, The Fossil Gallery, Science in Motion and The Collins Family My Big Backyard. A 120-seat digital planetarium and an observatory with a state-of-the-art 20-inch telescope will also be lo; HTML, 63 Kb, 2009-03-30 11:53:52; /directory/museums/the-weinman-mineral-gallery-wdd-003-00039.html
192. GemResearch Swisslab: Private gemological research company focused on the characterization of high-quality gems from newly opened mines.; HTML, 65 Kb, 2009-03-15 03:01:18; /directory/laboratories/gemresearch-swisslab-wdd-003-00016.html
193. How can I add my gemstone? at Alexandrite discussion forums | Alexandrite guide: How can I add my gemstone? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2006-08-29 20:23:00; /discussion/topic/how-can-i-add-my-gemstone-FRM-156
194. What is the difference between chrysoberyl and alexandrite? at Alexandrite discussion forums | Alexandrite guide: What is the difference between chrysoberyl and alexandrite? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-19 22:15:42; /discussion/topic/what-is-the-difference-between-chrysoberyl-and-ale-FRM-302
195. Alexandrite of Brésilia at Alexandrite discussion forums | Alexandrite guide: Alexandrite of Brésilia at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2011-01-17 20:25:00; /discussion/post/alexandrite-of-brjsilia-FRM-414-00001
196. Clarity grading: The classification of fashioned gemstones or diamonds according to their clarity using the standard nomenclature of terms: flawless, pure, clean, perfect (for top grade). VVS (very very slightly included), VS (very slightly included), SI (slightly include; HTML, 24 Kb, 2008-07-20 13:03:38; /chapters/glossary/clarity-grading.html
197. Re: Browse gemstones tagged with color change gemstone at Alexandrite discussion forums | Alexandrite guide: Re: Browse gemstones tagged with color change gemstone at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2010-01-30 00:24:06; /discussion/post/re-browse-gemstones-tagged-with-color-change-gemstone-FRM-355-00001
198. Vanadium: A very hard, light-gray, ductile, malleable, metallic element of the group V of the Periodic System with the symbol V. It is one of the 8 pigment metals responsible for color in gemstones such as beryl, sapphire (natural or synthetic). Used as a component; HTML, 24 Kb, 2008-07-20 13:07:28; /chapters/glossary/vanadium.html
199. Alexandrite Gemstone Collectors Guide, Alexandrite gemstones gallery and Alexandrite mining information at Alexandrite discussion forums | Alexandrite guide: Alexandrite Gemstone Collectors Guide, Alexandrite gemstones gallery and Alexandrite mining information at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2007-01-18 07:20:33; /discussion/topic/alexandrite-gemstone-collectors-guide-alexandrite--FRM-158
200. Re: Are there any other gemstones which change color? at Alexandrite discussion forums | Alexandrite guide: Re: Are there any other gemstones which change color? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2007-06-11 02:03:00; /discussion/post/re-are-there-any-other-gemstones-which-change-color-FRM-282-00001
201. Are there any other gemstones which change color? at Alexandrite discussion forums | Alexandrite guide: Are there any other gemstones which change color? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-04-04 14:14:00; /discussion/topic/are-there-any-other-gemstones-which-change-color-FRM-341
202. Color change natural tourmaline at Alexandrite discussion forums | Alexandrite guide: Color change natural tourmaline at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-20 00:13:00; /discussion/post/color-change-natural-tourmaline-FRM-282-00006
203. Pegmatite: A light-colored, coarse-grained igneous rock from granite clan containing orthoclase, quartz, microline, mica, gemstones, and many ferromagnesian minerals resulting from slow solidification. Pegmatite is occurring place of many uncommon gem minerals such; HTML, 24 Kb, 2008-07-20 13:06:14; /chapters/glossary/pegmatite.html
204. Appraisals at Alexandrite discussion forums | Alexandrite guide: Appraisals at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-15 02:49:00; /discussion/topic/appraisals-FRM-280
205. Re: Help with web design at Alexandrite discussion forums | Alexandrite guide: Re: Help with web design at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2007-01-10 02:21:55; /discussion/post/-re-help-with-web-design-FRM-157-00001
206. Red color change garnet at Alexandrite discussion forums | Alexandrite guide: Red color change garnet at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2008-09-16 02:21:00; /discussion/post/red-color-change-garnet-FRM-282-00003
207. Physical properties: Physical properties of gemstones are extremely important in understanding geological phenomena in synthesizing new materials, and identification of minerals. Physical properties and chemical composition of minerals change with temperature and pressure. P; HTML, 24 Kb, 2008-07-20 13:06:22; /chapters/glossary/physical-properties.html
208. Colour change sapphire anyone? at Alexandrite discussion forums | Alexandrite guide: Colour change sapphire anyone? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2008-10-26 13:01:00; /discussion/post/colour-change-sapphire-anyone-FRM-282-00005
209. alexandrite for sale at Alexandrite discussion forums | Alexandrite guide: alexandrite for sale at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2006-11-27 07:25:20; /discussion/post/-alexandrite-for-sale-FRM-168-00002
210. Phenomenon: A special optical occurrence, or circumstance observed or are visible in certain gemstones such as chatoyancy, asterism, or play of color, adularescence, girasol, labradorescence, opalescence, schiller, etc.; HTML, 24 Kb, 2008-07-20 13:06:20; /chapters/glossary/phenomenon.html

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