Gem Crystal
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 22 STONE CHAKRA SET Crystal Healing Tumbled Gemstones Meditation Reiki Wicca Gem  US $16.95
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 AMETHYST 52 MM GEM STONE CRYSTAL BALL CRYSTAL SPHERE US $9.38
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 CHATOYANT TIGERS EYE GEM STONE 45 MM CRYSTAL BALL CRYSTAL SPHERE US $26.56
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 3 x DARK PURPLE AMETHYST GEM STONE MASSAGE WANDS CRYSTAL HEALING US $8.50
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 ORGONE BRACELET CRYSTAL HEALER POSITIVE ENERGY GEMS AND COPPER US $22.99
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 7 STONE CHAKRA SET Crystal Healing Tumbled Gemstones Meditation Reiki Wicca Gems US $10.95
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 7 CHAKRA CRYSTAL PYRAMID WITH 7 DIFFERENT GEM STONES REIKI HEALING US $20.50
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 580g NATURAL Septarian Dragon Crystal Gem Specimen stone US $3.99
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 Rare Red Jade Skull Skeleton Carving Crystal Gem 4 Sets US $24.99
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 GOLDEN QUARTZ GEM STONE 44 MM CRYSTAL BALL CRYSTAL SPHERE US $6.50
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 Transparent Quartz Crystal Healing Gem Ball 10 Sets US $9.99
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 Pietersite CabochonChatoyantPetersiteCrystal CABGem US $8.99
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 Rare White Crystal Healing Gem Ball Sphere 49mm 025 US $9.99
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 45CT 11 A GOOD NATURAL clear WHITE PHANTOM QUARTZ CRYSTAL PENDANT GEM US $1.77
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 HAUNTED JEWELRY SPELL 925 SILVER GOLD WASH CRYSTAL GEM RING WITCH MASTERFUL MIND US $3.33
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 55g AAAAA NATURAL Labradorite quartz crystal GEM healingć US $.01
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 130g NATURAL CLEAR UNCUT QUARTZ CRYSTAL ROUGH GEM HEALING US $1.77
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 3 x BLUE LACE AGATE GEM STONE MASSAGE WANDS CRYSTAL HEALING US $20.50
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 65g NATURAL UNCUT CLEAR QUARTZ CRYSTAL POINT ROUGH GEM US $1.99
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 165g NATURAL UNCUT CLEAR QUARTZ CRYSTAL POINT ROUGH GEM US $2.99
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 Beautiful TOP BIG Gold Tigers Eye LOVE HEART Crystal Healing Gem US $19.90
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 Unique Chatoyant Petersite Cabochon Pietersite Crystal Gem CAB Pendant US $14.90
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 Great 49mm Natural Onyx Crystal Agate Sphere Ball Gem US $39.90
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 Painting Jasper Crystal Carving Healing Love Heart Gem US $12.90
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 2 Rare Bamboo Stone Carved Crystal Healing Gem Sphere STAND US $2.99
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 Holy Authentic Purple TEAR Naga Eye Gem Powerful Real Cave Crystal Thai Amulet US $24.99
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 NATURAL amethyst quartz crystal gem stone massage wand US $7.77
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 nature PURPLE JASPER quartz crystal gem stone massage wand US $4.99
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 Carved clear quartz Crystal Gem Stone turtle healing US $3.99
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 175 RARE RHODOCHROSITE Cabochon Crystal CAB GEM US $59.99
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 2 Nice Rainbow Clear Quartz Gem Crystal Skull Healing Skeleton US $99.99
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 6 TIBETAN BLACK QUARTZ CRYSTAL POINT GEM Specimen US $2.99
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 Natural Rare Crystal Gem Stone Rock Grape Malachite Blue Pendant Lucky¼healing US $9.62
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 Stunning Crystal Stretch Stretch Tridacna Bracelet Gem Stone 9mm Beads¼Healing US $8.81
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 Crystal Chinese Jade Gem Stone Flower carved Extend cord Bracelet Luvky¼Healing US $9.82
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 Rare Cute Crystal Stretch Bracelet White Gems 7mm Tridacna Beads Healthy¼Healing US $8.81
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 Natural Lucky Crystal Stretch Bracelet Eye Gem Stone Tiger 9mm Bead Rock¼Healing US $8.81
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 Crystal Chinese Jade Gem Stone carved Flower cord Bracelet Extend Luvky¼Healing US $9.82
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 AAA Blue Shimmer Gem Stone Rock Round 9mm Lucky Crystal Health Bracelet¼Healing US $8.62
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 Energy Crystal Stretch Bracelet Black Obsidian Gem Rock 7mm Stone Beads¼Healing US $8.62
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 Natural Crystal Bracelet Color Tiger Eye Gem Rock 7mm Stone Beads Energy¼Healing US $8.61
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 Rare Turquoise Carved Crystal Healing Gem Ball Sphere 53mm 02 US $9.99
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 Brilliant Opal Ball Crystal Healing Gem Ball US $.99
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 Rare Bamboo Stone Carved Crystal Healing Gem Ball Sphere 49mm 024 US $8.99
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 Rare Opal Cat Eye Gem Carved Pendulum Crystal Healing US $5.99
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 Rare Jade Crystal Healing Gem Ball 41mm US $.99
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 Rare Red Jasper Carved Crystal Healing Gem Ball Sphere 45mm 020 US $9.99
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 Rare Jade Hand Carved Crystal Healing Gem Ball 35mm US $.99
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 Rare Red Jasper Carved Crystal Healing Gem Ball Sphere 45mm 06 US $9.99
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 Rare Rose Quartz Crystal Healing Gem Ball 36mm US $8.99
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 Pietersite CabochonChatoyantPetersiteCrystal CABGem A372 US $9.99
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 Rare Jade Crystal Healing Gem Ball US $.99
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 Rare Andalusite Carved Crystal Healing Gem Ball 25mm 3 Sets US $9.99
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 265g NATURAL UNCUT CLEAR QUARTZ CRYSTAL POINT ROUGH GEM US $2.99
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 CITRINE Gems Rocks Crystals Tumblers Metaphysical 5 Lbs FREE SHIPPING US $35.95
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 Rare Agate Crystal Healing Gem Ball 40mm US $8.99
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 CRYSTAL MEDICINE Book by Marguerite Elsbeth SIXTEEN page color section of gems US $3.49
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 AMETHYST 65 MM GEM STONE CRYSTAL EGG US $10.49
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 RED TIGERS EYE GEM STONE 55 MM CRYSTAL EGG US $2.02
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 PURPLE FLUORITE GEM STONE 56 MM CRYSTAL EGG US $6.50
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 BLUE CHALCEDONY GEM STONE 62 MM CRYSTAL EGG US $28.00
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 290g NATURAL CLEAR QUARTZ CRYSTAL ROUGH GEM HEALING US $3.99
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 4 Huge Crinoid Fossil Jasper Gem Crystal Skull Healing Skeleton US $149.99
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 Jewelry NATURAL Geode AGATE CRYSTAL QUARTZ CAB Gem US $29.99
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 32 XXXL Green Jade Gem Crystal Skull Healing Skeleton US $59.99
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 287 XXXL Blue Sodalite Gem Crystal Skull Healing Skeleton US $59.99
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 Jewelry Beautiful Green Coral Stone Crystal CAB Gem US $29.99
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 UNSEARCHED NATURAL ROCK QUARTZ 1000 CARATS Rough Rocks Crystals Gems US $.99
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 Pearl Carved Crystal Skull Gem US $69.95
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 nature amethyst quartz crystal gem stone massage wand US $1.29
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 Gorgeous Multilayer Gem Stone Crystal Pyramid Healing Peru 56 Ozs US $39.99
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 Jewelry Coco Fossil Cabochon Crystal CAB Gem US $22.99
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 32 XXXL Nice Flash Labradorite Gem Crystal Skull Healing Handmade Skeleton US $45.04
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 155g NATURAL CLEAR UNCUT QUARTZ CRYSTAL ROUGH GEM HEALING US $2.99
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 CHARMING CARVED WHITE CRYSTAL HEALING HEARTGEMH063 US $.99
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 Flawless Carved Yellow Crystal Healing SphereGemS158 US $.99
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 35g NATURAL Labradorite Crystal Gem Stone original AAAA US $2.25
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 1PC Volcano Cherry Quartz Crystal Gemstone GEM Pendulum Healing Dowsing Chakra US $3.99
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 NATURAL Labradorite Crystal Gem Stone original US $9.99
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 Large ROSE crystal Gem Stone Christmas tree reiki best offer US $39.99
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 crystal Cherry red Gem Stone skull reiki healing US $217.77
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 37 XXXL Rich Pink Rose Quartz Gem Crystal Skull Healing Handmade Skeleton US $69.99
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 Wand Amethyst Crystal point w sphere sterling hand made w amethyst gems jq42 US $444.99
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 7 RARE NATURAL CITRINE QUARTZ CRYSTAL POINT ROUGH GEM US $3.99
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 Four Andalusite Chiastolite Gem Sphere ballCrystal 787 US $9.99
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 Hot Sell White Opal Ball Crystal Healing Gem Ball US $.99
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 Rare Red Jasper Carved Crystal Healing Gem Ball Sphere 45mm 023 US $9.99
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 Chatoyant Tiger Eye Gem Carved Crystal Healing Gem Ball Sphere 42mm 07 US $8.99
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 Charming Crystal Healing Gem Ball Brilliant 50mm US $8.99
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 112 Jewelry Beautiful COCO FOSSIL Crystal CAB GEM US $19.99
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 Jewelry Beautiful Botswana Agate Crystal CAB Gem US $15.99
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 Charming CARVED White Crystal Healing HeartGemH081 US $.99
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 Rare CARVED White Crystal Healing Skull GemS098 US $.99
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 2pcs NATURAL flsh Labradorite Crystal Gem Stone original US $.99
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 2pcs NATURAL flsh Labradorite Crystal Gem Stone original reiki US $2.35
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 59 mm Pink Star Rose Quartz Crystal Sphere Ball Gem US $99.99
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 155g NATURAL CLEAR RUTILATED QUARTZ CRYSTAL ROUGH GEM US $9.99
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Synthetic gem materials
Even though there were a few early hard works, successful gem synthesis began in the late 1800s with the development of synthetic ruby by the flame-fusion method. The need for a variety of high-quality crystals for a range of industrial applications (i.e. optics components, laser crystals and other uses), and the increased awareness of crystal growth mechanisms, have since combined to yield the production of a wide variety of crystals, some of which are synthetic counterparts of natural gemstones. A synthetic gem material has the similar chemical composition and crystal structure as a natural gem mineral. In contrast, a gem stimulant or imitation has the appearance of a natural gemstone, but has a different chemical composition, physical properties, and crystal structure. Both synthetic and stimulant gem materials almost always possess gemological properties that allow them to be distinguished from the corresponding natural gemstones.
Current methods used for gem synthesis fall into two general categories: crystallization from a fluid of different composition (such as a flux or aqueous hydrothermal solution), and crystallization from a melt with roughly the same chemical composition as the crystal being grown. Synthetic diamonds, grown from a metallic flux at high temperatures and pressures, have evoked concern in the jewelry trade ever since the first production of gem quality crystals in the early 1970s. However, due to the growth conditions involved, as well as the great expense and restricted availability of the growth equipment used, the actual number of gem-quality synthetic diamonds continues to be limited. Those that are encountered in the jewelry trade are mainly brownish-yellow crystals, weighing 1 carat or less (1 carat = 0.2 g), which can yield faceted pieces of 0.5 carat or smaller in size. In contrast to synthetic diamonds, colorless or near colorless imitation materials are much more abundant.
Over the years, a number of natural gem minerals and synthetic materials have been used to imitate colorless diamond. Cubic zirconium oxide (cubic zirconium or CZ) is the most widespread stimulant because of its low cost and similar appearance to a polished diamond. It (and most other stimulants) can be readily distinguished from diamond on the basis of a difference in heat conduction, which can be detected with a simple gemological test instrument. Within the past two years, a new material, synthetic moissanite (silicon carbide), has been marketed for jewelry purposes. It has caused some serious identification problems among jewelry, because it cannot be distinguished from diamond by the heat conduction test mentioned earlier. However, synthetic moissanite displays optical features due to its anisotropic optical character (seen as an optical doubling when viewed with magnification) which allow it to be easily recognized by trained gemologists.
Among colored stones, the most important synthetics are synthetic corundum (sapphire and ruby), emerald, spinal and amethyst. As indicated they are produced by both solution and melt crystallization techniques. In the marketplace, flame-fusion and crystal-pulled synthetics are relatively less expensive and therefore are more abundant than the flux and hydrothermal synthetics. Solution-grown synthetic amethyst falls into the same less-expensive category because of the existing large-scale production facilities for synthetic quartz for use in the electronics industry. In contrast, hydrothermal- and flux-grown ruby, sapphire and emerald are considered as ‘luxury’ synthetics that command higher prices.
About the Author
John Milton has contributed several articles in varying fields, especially such as Gemstone Reports, Precious Stone Reports .If your interested in the area of Gemstones, visit our site Precious stone Information, Gem Jewelry .
