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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 Designs
  188. Faceting Equipment
  189. Feldspar
  190. Fire Opal
  191. Flame fusion
  192. Fluorite
  193. Form
  194. Framed Hex
  195. Frequently Asked Questions
  196. GPFDC
  197. Garnet
  198. Gemstone Treatments and Enhancements
  199. Glossary of Terms
  200. Goldstone
  201. Goshenite
  202. Green Beryl
  203. Grossular
  204. Habit
  205. Hackmanite
  206. Half-life
  207. Hardness
  208. Hauyne
  209. Heat Treatment
  210. Heavy Liquids
  211. Heliodor
  212. Hematite
  213. Hiddenite
  214. Home
  215. Hunt - Ethiopian Supernatural
  216. Huynh-Beginner Honeycomb
  217. Huynh-Beginner Tourm
  218. Hydrogrossular
  219. Hydrostatic Balance
  220. Idocrase
  221. Imitation Gemstones
  222. Immersion cell
  223. Inclusion Quartz
  224. Inclusions
  225. Indicolite
  226. Interference
  227. Introduction to Gemology
  228. Iolite
  229. Isomorphous replacement
  230. J. Bailey on meetpoint faceting
  231. Jade
  232. Jadeite
  233. Jasper
  234. Jeremejevite
  235. Jill
  236. Kornerupine
  237. Kunzite
  238. Kyanite
  239. Labradorite
  240. Lapidary Arts
  241. Lapis Lazuli
  242. Lapiz Lazuli
  243. Larimar
  244. Lembke - Alhoa
  245. Lembke - EZ Heart
  246. Lembke - Pink Star Diamond
  247. Lembke - Squibble
  248. Lembke - Tourmaline Caterpillar
  249. Liddicoatite
  250. Logo
  251. Logoliv - Logoliv Princess
  252. Luminescence
  253. Luster
  254. Main
  255. Malachite
  256. Math
  257. Maw-sit-sit
  258. Maxixe
  259. Melo melo pearl
  260. Microscope
  261. Miller indices
  262. Mineral
  263. Moonstone
  264. Morganite
  265. Musgravite
  266. Nature of light
  267. Nephrite
  268. Obsidian
  269. Onyx
  270. Opal
  271. Optical properties of gemstones
  272. Organic
  273. Origin determination
  274. Origins of minerals
  275. Paraiba
  276. Pearl
  277. Pectolite
  278. Peridot
  279. Pezzottaite
  280. Phenakite
  281. Pleochroism
  282. Polariscope
  283. Polarization
  284. Poudretteite
  285. Praseolite
  286. Prasiolite
  287. Prasolite
  288. Prehnite
  289. Pyrite
  290. Pyrope
  291. Quahog
  292. Quartz
  293. Quartz - Polycrystalline
  294. Reflection
  295. Refraction
  296. Refractometer
  297. Rhodochrosite
  298. Riesling
  299. Rock Crystal
  300. Rose Quartz
  301. Rubellite
  302. Ruby
  303. Sample page
  304. Sandbox
  305. Sapphire
  306. Sapphirine
  307. Sard
  308. Sardonyx
  309. Scapolite
  310. Schorl
  311. Sea of Cortez pearl
  312. Serendibite
  313. Sheen
  314. Siderite
  315. Sillimanite
  316. Sitesupport-url
  317. Skull crucible
  318. Smokey Quartz
  319. Sodalite
  320. South Sea
  321. Specific Gravity
  322. Spectrolite
  323. Spectroscope
  324. Spessartite
  325. Sphalerite
  326. Sphene
  327. Spinel
  328. Spodumene
  329. Sublimation
  330. Sunset Quartz
  331. Sunstone
  332. Symmetry
  333. Synthetic cubic zirconia
  334. Synthetic forsterite
  335. Synthetic gemstones
  336. Synthetic moissanite
  337. Taaffeite
  338. TableTemplate
  339. Table Of Contents
  340. Tahitian
  341. Tanzanite
  342. Tashmarine
  343. The Chemical Classification of Gems & Minerals
  344. The Chemistry of Gemstones
  345. The Phenomenon of Color Change
  346. Thulite
  347. Tigereye
  348. Topaz
  349. Tourmaline
  350. Tri-Color
  351. True Blue
  352. Tsavorite
  353. Turquoise
  354. Tutorials
  355. Twinning
  356. Uvarovite
  357. Vanadium Beryl
  358. Vesuvianite
  359. Video presentations
  360. Visual Optics
  361. Void-reaver-25c
  362. Watermelon
  363. Wiki
  364. Willemite
  365. Zincite
  366. Zircon
  367. Zoisite
  368. Course:Dispersion
  369. Course:Home
  370. Course:Optical properties
  371. Course:Polarization
  372. Course:Reflection
  373. Course:Refraction
  374. Course:Refractometer
  375. Course:Total internal reflection
  376. Images:Alexandrite
  377. Images:Amber
  378. Images:Chrysoberyl
  379. Images:Copal
  380. Images:Fire Opal
  381. Images:Inclusions
  382. Images:Inclusions in Quartz
  383. Images:Spodumene
  384. Images:Sunstone
  385. Images:Tourmaline
  386. Images:Zircon
  387. Inclusions:Spinel

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