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  1. (Lembke - Squibble)
  2. (Placeholder)
  3. 10x Loupe
  4. Acceptability
  5. Achroite
  6. Acknowledgments
  7. Advanced Testing Tools
  8. Agate
  9. Akhavan - Beryl Blossom (test cut).jpg
  10. Akhavan - Classic Continental (test cut).jpg
  11. Akhavan - Courtesan (test cut).jpg
  12. Akhavan - Doom Zeppelin (test cut).jpg
  13. Akhavan - Epoch (test cut).jpg
  14. Akhavan - Eye of Zul (test cut).jpg
  15. Akhavan - Fallen Star (test cut 1).jpg
  16. Akhavan - Glass Shard Vortex (test cut).jpg
  17. Akhavan - Happy Flower (test cut).jpg
  18. Akhavan - Kweh (test cut).jpg
  19. Akhavan - Leaf in the Wind (test cut).jpg
  20. Akhavan - Lethargy (test cut).jpg
  21. Akhavan - Lumina’s Rays (test cut).jpg
  22. Akhavan - Mirage (test cut).jpg
  23. Akhavan - Polaris (test cut 1).jpg
  24. Akhavan - Porturillion (test cut).jpg
  25. Akhavan - Rectus Quadratum (test cut).jpg
  26. Akhavan - Star of Darkness (test cut).jpg
  27. Akhavan - Tessellation 10 (E) (test cut).jpg
  28. Akhavan - Tessellation 12 (F) (test cut).jpg
  29. Akhavan - Tessellation 13 (F) (test cut).jpg
  30. Akhavan - Tessellation 1 (O)
  31. Akhavan - Trillion Asscher (test cut).jpg
  32. Akhavan - Yggdrasil (test cut).jpg
  33. Akhavan - Zankoku (test cut).jpg
  34. Akhavan – A Study in Scarlet (test cut).jpg
  35. Akhavan – Abyssal Maw (test cut).jpg
  36. Akhavan – Board Exam (test cut).jpg
  37. Akhavan – Butts (test cut).jpg
  38. Akhavan – Checker Obsession (test cut).jpg
  39. Akhavan – Cherenkov’s Pool (test cut).jpg
  40. Akhavan – Contrareflector Cushion (test cut).jpg
  41. Akhavan – Coruscating Dome (test cut).jpg
  42. Akhavan – Crest of Hylia (test cut).jpg
  43. Akhavan – Crystal Hexagon S (test cut).jpg
  44. Akhavan – Elser's Challenge 2 (test cut).jpg
  45. Akhavan – Eye of Horus (test cut 1).jpg
  46. Akhavan – FAC101 L8 (test cut).jpg
  47. Akhavan – Fat Trillion (test cut).jpg
  48. Akhavan – Fornicate the Constable (test cut).jpg
  49. Akhavan – Frost Giant (test cut).jpg
  50. Akhavan – FutureTech (test cut).jpg
  51. Akhavan – Gnome’s Geode (test cut).jpg
  52. Akhavan – Heavens-Piercing Drill (test cut).jpg
  53. Akhavan – Hidden Treasure (test cut).jpg
  54. Akhavan – Igloo (test cut 1).jpg
  55. Akhavan – Innsmouth Portal (test cut).jpg
  56. Akhavan – Life in the Mines (test cut 1).jpg
  57. Akhavan – Lighthouse Beacon (test cut).jpg
  58. Akhavan – Lord of Iron (test cut).jpg
  59. Akhavan – Luna’s Glow (test cut).jpg
  60. Akhavan – Melancholia (test cut).jpg
  61. Akhavan – Missed Connections (test cut).jpg
  62. Akhavan – Narcolepsy (test cut).jpg
  63. Akhavan – Neuroglia (test cut).jpg
  64. Akhavan – Night Flight (test cut).jpg
  65. Akhavan – Nocio (test cut).jpg
  66. Akhavan – Oliveira's Garnet (test cut).jpg
  67. Akhavan – Oppositional Defiance (test cut).jpg
  68. Akhavan – Phil's Lapiderpy (test cut).jpg
  69. Akhavan – Piatt's Oval (test cut).jpg
  70. Akhavan – Procrastination (test cut).jpg
  71. Akhavan – Pyroclastic Flow (test cut).jpg
  72. Akhavan – Radiant Eye of Zul (test cut).jpg
  73. Akhavan – Radiant Lapidaria (test cut).jpg
  74. Akhavan – Reality (test cut).jpg
  75. Akhavan – Rhomboceros (test cut).jpg
  76. Akhavan – Road to Ruin (test cut).jpg
  77. Akhavan – Shuriken (test cut).jpg
  78. Akhavan – Simple Triangle Checkerboard (test cut).jpg
  79. Akhavan – Stained Glass Window (test cut).jpg
  80. Akhavan – Starheart (test cut).jpg
  81. Akhavan – Tessellation 15 (test cut).jpg
  82. Akhavan – Tessellation 18 (test cut).jpg
  83. Akhavan – Tessellation 29 (test cut).jpg
  84. Akhavan – Tessellation 3.1 (test cut).jpg
  85. Akhavan – Tessellation 32 (test cut).jpg
  86. Akhavan – Tessellation 4 (test cut).jpg
  87. Akhavan – Tessellation 5 (test cut).jpg
  88. Akhavan – Tessellation 7 (test cut).jpg
  89. Akhavan – Thank You, Ultra Tec (test cut).jpg
  90. Akhavan – Uso Da! (test cut).jpg
  91. Akhavan – Xephyr (test cut).jpg
  92. Alexandrite
  93. Almandine
  94. Alphabetic list by gemstone name
  95. Amazonite
  96. Amber
  97. Amethyst
  98. Ametrine
  99. Ammolite
  100. Anatase
  101. Andalusite
  102. Andesine
  103. Andradite
  104. Apatite
  105. Aquamarine
  106. Arkansas stone
  107. Axinite
  108. Azurite
  109. Barite
  110. Beginner Barion Oval aka Quake311 - Michiko Huynh
  111. Beginner Blossom - Michiko Huynh
  112. Benitoite
  113. Beryl
  114. Bi-color
  115. Bixbite
  116. Black Opal
  117. Bloodstone
  118. Blue Peruvian Opal
  119. Bowenite
  120. Brilliance
  121. Calcite
  122. Californite
  123. Carnelian
  124. Causes of color
  125. Chalcedony
  126. Charoite
  127. Chinese freshwater pearls
  128. Chrome
  129. Chrome Diopside
  130. Chrysoberyl
  131. Chrysocolla
  132. Chrysoprase
  133. Citrine
  134. Class I: Pure Elements
  135. Class II: Sulfides
  136. Class II: Sulphides
  137. Class III: Halides
  138. Class IV: Oxides
  139. Class VII: Phosphates
  140. Class VIII: Silicates
  141. Class VI a:Tungstates
  142. Class VI b:Sulphates
  143. Class V a:Carbonates
  144. Class V b:Borates
  145. Cleavage
  146. Clinohumite
  147. Coding Help
  148. Color
  149. Color Filters
  150. Color grading
  151. Copal
  152. Coral
  153. Corundum
  154. Create an Account
  155. Crystal Systems
  156. Crystallography
  157. Cyprine
  158. DOWN FOR MAINTENANCE
  159. Danburite
  160. Datolite
  161. Demantoid
  162. Design Search
  163. Diamond
  164. Diaspore
  165. Dichroscope
  166. Diffraction
  167. Diopside
  168. Dioptase
  169. Dispersion
  170. Double Refraction
  171. Dravite
  172. Ekanite
  173. Elbaite
  174. Elbaite variety "Laurellite"
  175. Emerald
  176. Enstatite
  177. Equipment
  178. Equipment used to identify gemstones
  179. Example
  180. Fabri - Nicks Garnet Surprise
  181. Fabri - Sapphire Sweetness
  182. Fabri - Sevyn
  183. Fabri - Sevyns Recovery
  184. Fabri - Trinidad SRB
  185. Faceting
  186. Faceting Design Competition Diagrams
  187. Faceting Equipment
  188. Feldspar
  189. Fire Opal
  190. Flame fusion
  191. Fluorite
  192. Form
  193. Framed Hex
  194. Frequently Asked Questions
  195. GPFDC
  196. Garnet
  197. Gemstone Treatments and Enhancements
  198. Glossary of Terms
  199. Goldstone
  200. Goshenite
  201. Green Beryl
  202. Grossular
  203. Habit
  204. Hackmanite
  205. Half-life
  206. Hardness
  207. Hauyne
  208. Heat Treatment
  209. Heavy Liquids
  210. Heliodor
  211. Hematite
  212. Hiddenite
  213. Home
  214. Hunt - Ethiopian Supernatural
  215. Huynh-Beginner Honeycomb
  216. Huynh-Beginner Tourm
  217. Hydrogrossular
  218. Hydrostatic Balance
  219. Idocrase
  220. Imitation Gemstones
  221. Immersion cell
  222. Inclusion Quartz
  223. Inclusions
  224. Indicolite
  225. Interference
  226. Introduction to Gemology
  227. Iolite
  228. Isomorphous replacement
  229. J. Bailey on meetpoint faceting
  230. Jade
  231. Jadeite
  232. Jasper
  233. Jeremejevite
  234. Jill
  235. Kornerupine
  236. Kunzite
  237. Kyanite
  238. Labradorite
  239. Lapidary Arts
  240. Lapis Lazuli
  241. Lapiz Lazuli
  242. Larimar
  243. Lembke - Alhoa
  244. Lembke - EZ Heart
  245. Lembke - Pink Star Diamond
  246. Lembke - Squibble
  247. Lembke - Tourmaline Caterpillar
  248. Liddicoatite
  249. Logo
  250. Logoliv - Logoliv Princess
  251. Luminescence
  252. Luster
  253. Main
  254. Malachite
  255. Math
  256. Maw-sit-sit
  257. Maxixe
  258. Melo melo pearl
  259. Microscope
  260. Miller indices
  261. Mineral
  262. Moonstone
  263. Morganite
  264. Musgravite
  265. Nature of light
  266. Nephrite
  267. Obsidian
  268. Onyx
  269. Opal
  270. Optical properties of gemstones
  271. Organic
  272. Origin determination
  273. Origins of minerals
  274. Paraiba
  275. Pearl
  276. Pectolite
  277. Peridot
  278. Pezzottaite
  279. Phenakite
  280. Pleochroism
  281. Polariscope
  282. Polarization
  283. Poudretteite
  284. Praseolite
  285. Prasiolite
  286. Prasolite
  287. Prehnite
  288. Pyrite
  289. Pyrope
  290. Quahog
  291. Quartz
  292. Quartz - Polycrystalline
  293. Reflection
  294. Refraction
  295. Refractometer
  296. Rhodochrosite
  297. Riesling
  298. Rock Crystal
  299. Rose Quartz
  300. Rubellite
  301. Ruby
  302. Sample page
  303. Sandbox
  304. Sapphire
  305. Sapphirine
  306. Sard
  307. Sardonyx
  308. Scapolite
  309. Schorl
  310. Sea of Cortez pearl
  311. Serendibite
  312. Sheen
  313. Siderite
  314. Sillimanite
  315. Sitesupport-url
  316. Skull crucible
  317. Smokey Quartz
  318. Sodalite
  319. South Sea
  320. Specific Gravity
  321. Spectrolite
  322. Spectroscope
  323. Spessartite
  324. Sphalerite
  325. Sphene
  326. Spinel
  327. Spodumene
  328. Sublimation
  329. Sunset Quartz
  330. Sunstone
  331. Symmetry
  332. Synthetic cubic zirconia
  333. Synthetic forsterite
  334. Synthetic gemstones
  335. Synthetic moissanite
  336. Taaffeite
  337. TableTemplate
  338. Table Of Contents
  339. Tahitian
  340. Tanzanite
  341. Tashmarine
  342. The Chemical Classification of Gems & Minerals
  343. The Chemistry of Gemstones
  344. The Phenomenon of Color Change
  345. Thulite
  346. Tigereye
  347. Topaz
  348. Tourmaline
  349. Tri-Color
  350. True Blue
  351. Tsavorite
  352. Turquoise
  353. Tutorials
  354. Twinning
  355. Uvarovite
  356. Vanadium Beryl
  357. Vesuvianite
  358. Video presentations
  359. Visual Optics
  360. Void-reaver-25c
  361. Watermelon
  362. Wiki
  363. Willemite
  364. Zincite
  365. Zircon
  366. Zoisite
  367. Course:Dispersion
  368. Course:Home
  369. Course:Optical properties
  370. Course:Polarization
  371. Course:Reflection
  372. Course:Refraction
  373. Course:Refractometer
  374. Course:Total internal reflection
  375. Images:Alexandrite
  376. Images:Amber
  377. Images:Chrysoberyl
  378. Images:Copal
  379. Images:Fire Opal
  380. Images:Inclusions
  381. Images:Inclusions in Quartz
  382. Images:Spodumene
  383. Images:Sunstone
  384. Images:Tourmaline
  385. Images:Zircon
  386. Inclusions:Spinel

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