gemstones

41. Strong Color Change Alexandrite Cushion
Extremely rare Alexandrite (Chrysoberyl) Cushion 21.41cts from India (Deobhog area)
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42. Strong Color Change Alex. Oval 2.10cts.
Extremely rare Alexandrite (Chrysoberyl) Oval 2.1cts from India (Deobhog area)
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43. Strong Color Change 9.2x4.6mm Alexandrite
Extremely rare Alexandrite (Chrysoberyl) Fancy 2.05cts from Tanzania (Tunduru)
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44. Strong Change Natural Alexandrite 8.08cts.
Extremely rare Alexandrite (Chrysoberyl) Pear 8.08cts from Tanzania (Tunduru)
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45. Strong Change Natural Alexandrite 7.24cts.
Extremely rare Alexandrite (Chrysoberyl) Pear 7.24cts from Tanzania (Tunduru)
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46. Strong Change Natural Alexandrite 13.55cts.
Extremely rare Alexandrite (Chrysoberyl) Oval 13.55cts from Tanzania (Tunduru)
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47. Strong Change Natural Alexandrite 10.20cts.
Extremely rare Alexandrite (Chrysoberyl) Oval 10.2cts from Tanzania (Tunduru)
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48. 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
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49. Spectrum
Any array of electromagnetic visible light ordered according to its constituent wavelengths or colors, when the white light is dispersed by a prism or diffraction grating, ranging from about 750 to about 400 nm. The spectra can obtained by means of spectr
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50. 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
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51. Sharp Chrysoberyl Cats Eye Cab 3.29cts.
Hard to find Cymophane (Chrysoberyl) Oval 3.29cts from Tanzania (Tunduru)
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52. Sharp Chrysoberyl Cats Eye 5.90cts.
Rare Cymophane (Chrysoberyl) Oval 5.9cts from Tanzania (Tunduru)
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53. Sharp Chrysoberyl Cat's Eye Oval 2.52cts.
Hard to find Cymophane (Chrysoberyl) Oval 2.52cts from Madagascar (Ilakaka)
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54. Sharp Chrysoberyl Cat's Eye Oval 2.29cts.
Hard to find Cymophane (Chrysoberyl) Oval 2.29cts from Madagascar (Ilakaka)
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55. Russian Alexandrite, Malyshevskoye
Information about Russian alexandrite findings and mining in Malyshevskoye, Russia.
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56. Red color change garnet at Alexandrite discussion forums | Alexandrite guide
Red color change garnet at Alexandrite discussion forums | Alexandrite guide
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57. Re: Zandrite at Alexandrite discussion forums | Alexandrite guide
Re: Zandrite at Alexandrite discussion forums | Alexandrite guide
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58. Re: Buying Alexandrite at Alexandrite discussion forums | Alexandrite guide
Re: Buying Alexandrite at Alexandrite discussion forums | Alexandrite guide
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/discussion/post/re-buying-alexandrite-FRM-134-00001
59. 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
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60. 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
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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
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62. Quality Orissa Alexandrite Oval 1.60cts.
Rare Alexandrite (Chrysoberyl) Oval 1.6cts from India (Deobhog area)
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63. Quality Natural Alexandrite Cushion 2.70cts.
Extremely rare Alexandrite (Chrysoberyl) Cushion 2.7cts from India (Deobhog area)
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64. Quality Alexandrite Pear Shape 2.12cts.
Extremely rare Alexandrite (Chrysoberyl) Pear 2.12cts from Tanzania (Tunduru)
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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
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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.
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67. Phenomenal gemstones at Alexandrite discussion forums | Alexandrite guide
Phenomenal gemstones at Alexandrite discussion forums | Alexandrite guide
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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
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69. Pala International
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/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)
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71. Outstanding 11x8mm Chrysoberyl Pear 3.43cts
Hard to find Chrysoberyl (Chrysoberyl) Pear 3.43cts from Tanzania (Tunduru)
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72. Outstanding 11.8x9mm Chrysoberyl Oval 5.46cts
Rare Chrysoberyl (Chrysoberyl) Oval 5.46cts from Tanzania (Tunduru)
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73. Outstanding 10x8.7mm Chrysoberyl Ov 3.72cts
Hard to find Chrysoberyl (Chrysoberyl) Oval 3.72cts from Tanzania (Tunduru)
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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
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75. Nice Natural Alexandrite Oval 8.94cts.
Extremely rare Alexandrite (Chrysoberyl) Oval 8.94cts from Tanzania (Tunduru)
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76. Nice Emerald Cut Chrysoberyl 8.18cts.
Rare Chrysoberyl (Chrysoberyl) Octagon 8.18cts from Sri Lanka (Balangoda)
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77. Nice Emerald Cut Chrysoberyl 2.56cts.
Hard to find Chrysoberyl (Chrysoberyl) Octagon 2.56cts from Tanzania (Tunduru)
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78. Nice Color Tanzanian Chrysoberyl 3.35ct.
Hard to find Chrysoberyl (Chrysoberyl) Oval 3.35cts from Tanzania (Tunduru)
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79. Nice Color Change Alexandrite Oval 7.46cts.
Extremely rare Alexandrite (Chrysoberyl) Oval 7.46cts from Tanzania (Tunduru)
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80. Nice Color Change Alexandrite Oval 2.09cts.
Extremely rare Alexandrite (Chrysoberyl) Oval 2.09cts from India (Deobhog area)
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