gemstones

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61. 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
62. Quality Orissa Alexandrite Oval 1.60cts.: Rare Alexandrite (Chrysoberyl) Oval 1.6cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-6-faceted_xax321aa
63. Quality Natural Alexandrite Cushion 2.70cts.: Extremely rare Alexandrite (Chrysoberyl) Cushion 2.7cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-cushion-2-7-faceted_YAX129aa
64. Quality Alexandrite Pear Shape 2.12cts.: Extremely rare Alexandrite (Chrysoberyl) Pear 2.12cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-pear-2-12-faceted_XAX333af
65. 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
66. 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
67. Phenomenal gemstones at Alexandrite discussion forums | Alexandrite guide: Phenomenal gemstones at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2010-10-18 19:20:37; /discussion/topic/phenomenal-gemstones-FRM-378
68. 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
69. Pala International: HTML, 64 Kb, 2009-03-30 07:51:42; /directory/gemstone-dealers/pala-international-wdd-003-00032.html
70. Outstanding Color/Cut 11x9mm Chrysoberyl Oval: Rare Chrysoberyl (Chrysoberyl) Oval 6.02cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-6-02-faceted_YCB144aa
71. 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
72. 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
73. 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
74. Obtala Resources agrees licensing deal with Gemstones of Africa at Alexandrite discussion forums | Alexandrite guide: Obtala Resources agrees licensing deal with Gemstones of Africa at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-16 03:40:00; /discussion/topic/obtala-resources-agrees-licensing-deal-with-gemsto-FRM-284
75. Nice Natural Alexandrite Oval 8.94cts.: Extremely rare Alexandrite (Chrysoberyl) Oval 8.94cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-8-94-faceted_AX4224aa
76. Nice Emerald Cut Chrysoberyl 8.18cts.: Rare Chrysoberyl (Chrysoberyl) Octagon 8.18cts from Sri Lanka (Balangoda); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-octagon-8-18-faceted_vcb207ab
77. Nice Emerald Cut Chrysoberyl 2.56cts.: Hard to find Chrysoberyl (Chrysoberyl) Octagon 2.56cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-octagon-2-56-faceted_XCB135ac
78. Nice Color Tanzanian Chrysoberyl 3.35ct.: Hard to find Chrysoberyl (Chrysoberyl) Oval 3.35cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-3-35-faceted_ycb146jy
79. 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
80. Nice Color Change Alexandrite Oval 2.09cts.: Extremely rare Alexandrite (Chrysoberyl) Oval 2.09cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-2-09-faceted_xax327ab
81. Nice Chrysoberyl Pear Shape 2.64cts.: Hard to find Chrysoberyl (Chrysoberyl) Pear 2.64cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-pear-2-64-faceted_YAX165ad
82. Nice Change Natural Alexandrite Oval 6.36cts.: Extremely rare Alexandrite (Chrysoberyl) Oval 6.36cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-6-36-faceted_AX4225aa
83. Needlelike (silk): Acicular a needle form of inclusions in gemstones.; HTML, 23 Kb, 2008-07-20 13:05:56; /chapters/glossary/needlelike-silk.html
84. 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
85. Natural alexandrite investment potential? at Alexandrite discussion forums | Alexandrite guide: Natural alexandrite investment potential? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2010-11-27 20:24:36; /discussion/topic/natural-alexandrite-investment-potential-FRM-380
86. Multicolour Gems: HTML, 63 Kb, 2009-03-06 16:25:54; /directory/gemstone-dealers/multicolour-gems-wdd-003-00001.html
87. Methods of Producing Synthetic Alexandrite: Information about melt and flux techniques used for the synthetic alexandrite manufacturing; HTML, 41 Kb, 2008-07-20 13:01:46; /chapters/chapter7/methods-of-producing-synthetic-alexandrite.html
88. 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
89. Lively Daylight Green Alexandrite 2.55cts.: Extremely rare Alexandrite (Chrysoberyl) Oval 2.55cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-2-55-faceted_XAX333ae
90. Large Collector Alexandrite Oval 6.23cts.: Extremely rare Alexandrite (Chrysoberyl) Oval 6.23cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-6-23-faceted_AX1874b
91. Lapidary: A craftsman who cuts, polishes, and engraves colored gemstones, other than diamonds. A worker who cuts, and polishes diamonds is known as a diamond cutter.; HTML, 23 Kb, 2008-07-20 13:05:29; /chapters/glossary/lapidary.html
92. Jewel: A fashioned ornament for personal adornment, which is made of noble metals mounted with natural, synthetic, or imitation gemstones.; HTML, 23 Kb, 2008-07-20 13:05:05; /chapters/glossary/jewel.html
93. 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
94. 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
95. 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, 2013-04-09 07:24:45; /discussion/topic/is-alexandrite-the-most-expensive-gemstone-in-the--FRM-459
96. 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; HTML, 26 Kb, 2008-07-29 08:11:10; /chapters/faq/is-alexandrite-the-most-expensive-gemstone-in-the-world.html
97. 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
98. How can I spot the difference between a natural and a synthetic alexandrite?: HTML, 26 Kb, 2008-07-29 08:11:26; /chapters/faq/how-can-i-spot-the-difference-between-a-natural-and-a-synthetic-alexandrite.html
99. 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
100. 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
101. 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
102. Gubelin Gemological Laboratories: Dr. Eduard J. Gubelin, one of the forefathers of modern gemology, and who was a Founding Organizing Member as well as an Honorary Member of the International Colored Gemstone Association (ICA), passed away in Lucerne, Switzerland in March at the age of 91; HTML, 66 Kb, 2009-03-15 03:05:18; /directory/laboratories/gubelin-gemological-laboratories-wdd-003-00017.html
103. Glossary of Terms for Alexandrite Gemstone Buyer and Collector's Guide: Glossary of terms that have been discussed or mentioned at Alexandrite gemstone buyer and collectors guide; HTML, 38 Kb, 2008-07-20 13:02:49; /chapters/glossary/index.html
104. Gemsuite: HTML, 63 Kb, 2009-03-30 08:08:40; /directory/gemstone-dealers/gemsuite-wdd-003-00033.html
105. Gemstone cuts: Any forms or styles used in the fashioning of gemstones such as antique cut, brilliant cut, emerald cut, baguette, cabochon, rose cut, etc.; HTML, 23 Kb, 2008-07-20 13:04:32; /chapters/glossary/gemstone-cuts.html
106. 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
107. 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
108. Gemmy Color Change Alexandrite Oval 5.08cts.: Extremely rare Alexandrite (Chrysoberyl) Oval 5.08cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-5-08-faceted_AX4139aa
109. Gem Studies Lab: GAA was formed in Sydney, on the 29th October 1945, the Association has been responsible for producing Australia’s gemmologists by educating and updating members of the gem and jewellery industry and the general public, about all aspects of gemstones an; HTML, 66 Kb, 2009-03-15 02:18:56; /directory/laboratories/gem-studies-lab-wdd-003-00009.html
110. 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
111. 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
112. Fine Strong Color Change Alexandrite Round: Rare Alexandrite (Chrysoberyl) Round 1.19cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-round-1-19-faceted_yax508aa
113. Fine Strong Color Change Alexandrite Oval: Rare Alexandrite (Chrysoberyl) Oval 1.04cts from India (Deobhog area); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-oval-1-04-faceted_yax507aa
114. 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
115. Fine Sharp Chrysoberyl Cats Eye 2.25cts.: Hard to find Cymophane (Chrysoberyl) Oval 2.25cts from Madagascar (Ilakaka); HTML, 14 Kb, -0001-11-30 00:00:00; /gemstones/natural-cymophane-oval-2-25-traditional_CB1949d
116. Fine Sharp Chrysoberyl Cat's Eye 4.40cts.: Hard to find Cymophane (Chrysoberyl) Oval 4.4cts from Madagascar (Ilakaka); HTML, 14 Kb, -0001-11-30 00:00:00; /gemstones/natural-cymophane-oval-4-4-traditional_CB1949a
117. Fine Cut Chrysoberyl Trillion 2.84cts.: Hard to find Chrysoberyl (Chrysoberyl) Trillion 2.84cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-trillion-2-84-faceted_YCB111ab
118. Fine Cut / Good Clarity Alexandrite 3.03cts.: Extremely rare Alexandrite (Chrysoberyl) Octagon 3.03cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-alexandrite-octagon-3-03-faceted_xax329ab
119. Fine Color/Cut 9.2x6.5 Chrysoberyl Oval: Hard to find Chrysoberyl (Chrysoberyl) Oval 2.47cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-2-47-faceted_YCB126bo
120. Fine Color/Cut 8x6mm Chrysoberyl Oval: Hard to find Chrysoberyl (Chrysoberyl) Oval 1.89cts from Tanzania (Tunduru); HTML, 15 Kb, -0001-11-30 00:00:00; /gemstones/natural-chrysoberyl-oval-1-89-faceted_XCB135ab

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