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| G u a r a n t e e d
G e n u i n e G e m s |
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| Facet | ||
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| Amethyst | ||
| Apatite | ||
| Aquamari | ||
| Beryl | ||
| Citrine | ||
| Danburite | ||
| Emerald | ||
| Hessonite | ||
| Malaya | ||
| Rhodolite | ||
| Spessart. | ||
| Hambergi | ||
| Iolite | ||
| Orthoclas | ||
| Phenakit | ||
| Quartz | ||
| Ruby | ||
| Sapphire | ||
| Sa. Fancy | ||
| Sa. Pink | ||
| Sa. Padpar | ||
| Sphene | ||
| Topaz | ||
| Tourmalin | ||
| Bi-color | ||
| Chrome | ||
| Green | ||
| Peach | ||
| Pink | ||
| Rubellite | ||
| Yellow | ||
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| Aquamar | ||
| Amethyst | ||
| Emerald | ||
| Hessonite | ||
| Iolite | ||
| Labrador | ||
| Quartz | ||
| Quartz bl. | ||
| Rhodolite | ||
| Ruby | ||
| Spessart. | ||
| Sap.Slice | ||
| Cab. Sapp | ||
| Tourmalin | ||
| Cat's eye | ||
| Green | ||
| Pink | ||
| Peach | ||
| Polychro. | ||
| Rubellite | ||
| Slice | ||
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G e n u i n e G e m s |
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| Services SINGLE STONES PAIRS SETS CABOCHONS COLLECTOR'S DESIGNER'S |
| Site map WELCOME ORDER TERMS MINERALS RESERVE CONTACT US ABOUT US |
| Usually ships within 24 hours SEARCH FORM HELP INFO. FR TRACK ORDERS |
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| PHENAKITE NATURAL COLOR Hardness 7.5 |
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| Next page »» Phenakite Crystal Faceted Phenakite |  |
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14.09 cts. Phenakite crystal cluster single
22.4 x 13.7 mm. Size of individual crystal: 12.6 x 7.4 mm ( Translucent ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1409c |
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8.47 cts. Phenakite crystal cluster single
12.5 x 12 mm. ( Translucent ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw847c |
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33.19 cts. Phenakite crystal cluster single
28.4 x 22 mm. Size of individual crystal: 9.5 x 6.7 mm ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw3319c |
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10.99 cts. Bi terminated Phenakite crystal single
13 x 10.4 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1099c |
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15.49 cts. Phenakite crystal single
14.2 x 13.4 mm. ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1549c |
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18.09 cts. Phenakite crystal single
15.2 x 12.3 mm. ( needle crystal inside ) ( Translucent ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1809c |
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21.27cts. Phenakite crystal cluster single
20.6 x 17.2 mm. Size of individual crystal: 9.5 x 8.9 mm ( Translucent ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw2127c |
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23.51 cts. Phenakite crystal cluster single
23 x 22.4 mm. Size of individual crystal: 10 x 6.6 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw2351c |
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9.22 cts. Bi terminated Phenakite crystal single
12.8 x 10 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw922 |
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9.24 cts. Bi terminated Phenakite crystal single
13.1 x 9.2 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw924 |
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17.76 cts. Phenakite crystal cluster single
16 x 16.6 mm. Size of individual crystal: 9.8 x 5.7 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1776c |
| Next page »» Phenakite Crystal Faceted Phenakite | |
General Information |
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| Chemical Formula: | Be2SiO4 | |
| Composition: | Molecular Weight = 110.11 gm | |
| Berylium16.37 % Be 45.43 % BeO | ||
| Silicon 25.51 % Si 54.57 % SiO2 | ||
| Oxygen 58.12 % O | ||
| ______ ______ | ||
| 100.00 % 100.00 % = TOTAL OxIDE | ||
| Empirical Formula: | Be2(SiO4) | |
| Environment: | Alpine fissures, pegmatites, and hydrothermally altered rocks. | |
| Locality: | Habachtal, Austria. Madagascar | |
| Name Origin: | From the Greek phenakos - "liar." | |
Phenakite Image |
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| Prismatic, bi- terminated crystals of Phenakite |  |
 Click on the picture to go to facet Phenakite. |
Crystallography |
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| Axial Ratios: | a:c = 1:0.66164 | |
| Cell Dimensions: | a = 12.472, c = 8.252, Z = 18; V = 1,111.63 Den(Calc)= 2.96 | |
| Crystal System: | Trigonal-Rhomboedal H-M Symbol ( -3) Space Group: R3- | |
| x Ray Diffraction: | By Intensity(I/Io): 3.119(1)3.66(0.8)2.518(0.75) | |
Physical Properties |
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| Cleavage: | [1120] Distinct | |
| Color: | colorless, wine yellow, yellow, pink, or pinkish red. | |
| Density: | 2.97 - 3, Average = 2.98 | |
| Diaphaniety: | Transparent to subtranslucent | |
| Fracture: | Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | |
| Habits: | Massive - Fibrous - Distinctly fibrous fine-grained forms., Granular - Generally occurs as anhedral to subhedral crystals in matrix., | |
| Hardness: | 7.5-8 | |
| Luminescence: | Non-fluorescent. | |
| Luster: | Vitreous (Glassy) | |
| Streak: | white | |
Optical Properties |
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| Optical Data: | Uniaxial (+), w=1.654, e=1.67, bire=0.0160. | |
Classification |
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| Dana Class: | Nesosilicate Insular SiO4 Groups Only | |
| with cations in [4] coordination | ||
| Phenakite group | ||
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| Strunz Class: | Silicates | |
| Nesosilicates, with [SiO4]4- groups, cations of tetrahedric orientation [4] | ||
| STRUNZ - Silicates [Nesosilicates, with [SiO4]4- groups, cations of tetrahedric orientation [4] {Phenakite series}] | ||
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