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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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| Cab. | ||
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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 |
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| 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 cluster Faceted Phenakite |  |
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10.98 cts. Bi terminated Phenakite crystal single
12.8 x 11.1 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1098c |
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14.18 cts. Bi terminated Phenakite crystal single
14.5 x 12.4 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
USD 130.00 ORIGIN: Madagascar ref: PHCw1418c |
 Enlarge |
16.96 cts. Phenakite crystal cluster on tourmaline shorl
25.5 x 15.2 mm. Size of individual crystal: 10.1 x 6 mm (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1696 |
 Enlarge |
40.76 cts. Phenakite crystal cluster
25.3 x 21.7 mm. Size of individual crystal: 10 x 7.1 mm (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw4076 |
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9.76 cts. Bi terminated Phenakite crystal single
13 x 11.1 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw976 |
 Enlarge |
30 grms. Phenakite crystal cluster single
42.7 x 35 x 27.7 mm. Size of individual crystal: 13.4 x 6 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw30gr |
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56 grs. Phenakite crystal on shorl single
52.7 x 41.3 mm. Size of individual crystal: 7.3 x 3.7 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCTw56g |
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82.24 cts. Phenakite crystal on shorl single
38 x 24 mm. Size of individual crystal: 9.3 x 4 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw8224c |
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32.90 cts. Phenakite crystal cluster single
24.5 x 24.8 mm. Size of individual crystal: 16 x 9.2 mm ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw3290c |
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6 grms. Bi terminated Phenakite crystal single
21.2 x 16.1 mm. Size of individual crystals:16.6 mm Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw6g |
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20.91 cts. Phenakite crystal cluster single
22 x 18.6 mm. Size of individual crystal: 9.6 x 5.9 mm ( Translucent ) Enhancement: none (N)
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stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw2091c |
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39.81 cts. Phenakite crystal cluster on shorl single
27 x 24.6 mm. Size of individual crystal: 5 x 4.6 mm ( Translucent ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw3981c |
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11.62 cts. Bi terminated Phenakite crystal single
13.1 x 11 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1162c |
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63.33 cts. Phenakite crystal cluster on shorl single
33 x 19.4 mm. Size of individual crystal: 7 x 3 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw6333c |
 Enlarge |
25.13 cts. Phenakite crystal cluster
24.1 x 17.2 mm. Size of individual crystal: 10 x 8.5 mm (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw2513 |
 Enlarge |
27.38 cts. Phenakite crystal cluster
28.7 x 20.2 mm. Size of individual crystal: 10.8 x 6 mm (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw2738 |
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15.20 cts. Bi terminated Phenakite crystal single
14.2 x 12.4 mm. (Translucent) (Glossy) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw1520 |
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40.59 cts. Phenakite crystal cluster single
26.2 x 22 mm. Size of individual crystal: 12.6 x 7 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw4059c |
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7.73 cts. Phenakite crystal cluster single
12.8 x 12.8 mm. Size of individual crystal: 12.4 x 6.2 mm ( Translucent ) ( Bi terminated ) Enhancement: none (N) |
stone PRICE
SOLD ORIGIN: Madagascar ref: PHCw773c |
| Next page »» Phenakite cluster Faceted Phenakite | |
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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 |
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 Click on the picture to go to facet Phenakite. |
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| © Image by A. Darbellay | ||||
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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