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Fine Jewelry Store


Fine Jewelry Store
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Citrine - as a mineral
2008-02-13 20:33:00
Citrine, also called citrine fortz is a variety of quartz. It ranges in color from a pale yellow to brown. Citrine has ferric impurities, and is rarely found naturally. Most commercial citrine is in fact artificially heated amethyst or smoky quartz. Brazil is the leading producer of naturally mined citrine, with much of its production coming from the state of Rio Grande do Sul. Citrine In ancient times, citrine was carried as a protection against snake venom and evil thoughts. Citrine is one of three traditional birthstones for the month of November. It is nearly impossible to tell cut citrine from yellow Topaz visibly.
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Aquamarine - as a mimeral
2008-01-04 12:37:00
Aquamarine Aquamarine General Category beryl variety Chemical formula Be3Al2Si6O18[1] Identification Color transparent (or can be translucent if included), greenish blue to blue green, typically light in tone[1] Crystal system hexagonal[1] Cleavage very difficult in one direction, almost never seen[1] Fracture conchoidal[1] Mohs Scale hardness 7.5 - 8[1] Luster vitreous to resinous[1] Polish luster vitreous [1] Refractive index 1.577 - 1.583 (+/- .017)[1] Optical Properties Double refractive, uniaxial negative[1] Birefringence .005 - .009[1] Dispersion .014[1] Pleochroism weak to moderate, blue and greenish blue; or different tones of blue with lighter tones associated with the optic axis direction [1] Ultraviolet fluorescence inert[1] Absorption spectra indistinct lines at 537 and 456nm. Depending on the depth of color, there is a strong line at 427nm.[1] Specific gravity 2.72 (+.18, -.05)[1]Aquamarine (Lat. aqua marinā, "water of the sea")...
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Forum : Pink Diamond Ring
2007-12-24 16:27:00
26/11/2007 (11 posts)First comment from this forum :"I have wanted a pink for a long time now and my anniversary is coming up, my husband always gets me what I want. So my question is where should I get my pink? Anybody have any suggestions? I want a nice stone and it must be certified, I live in California, but I will consider online purchases too. Thanks guys.Annie"see this forum at : http://www.jewelryforum.net/forum/showthr ead.php?t=575
More About: Pink , Forum , Ring , Diamond
Forum : Syntethic Gemstones?
2007-12-12 00:16:00
First comment from this forum :Aug 2004 (16 posts)"How can I tell if gemstone jewelry I buy online is not man made or syntethic?"see this forum at : http://www.jewelryforum.net/forum/showthr ead.php?t=52
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Forum : Diamond Necklace
2007-12-12 00:12:00
First comment from this forum : Sep 2005 (10 posts)"This diamond necklace is selling for half of it's appraised value. I love it, I would love to wear it to my wedding, but someone told me diamonds are for ladies who have been married for 6 years. Is this true?"see this forum at : http://www.jewelryforum.net/forum/showthr ead.php?t=116
More About: Necklace , Forum , Diamond , Diamond Necklace
Amethyst : as a mineral
2007-12-06 10:22:00
Amethyst is a purple variety of quartz often used as an ornament. The name comes from the Greek a ("not") and methustos ("to intoxicate"), a reference to the belief that the stone protected its owner from drunkenness; the ancient Greeks and Romans wore amethyst and made drinking vessels of it in the belief that it would prevent intoxication.Quartz General Category Mineral variety Chemical formula Silica (silicon dioxide, SiO2) Identification Color purple Crystal habit 6-sided prism ending in 6-sided pyramid (typical) Crystal system rhombohedral class 32 Twinning Dauphine law, Brazil law and Japan law Cleavage None Fracture Conchoidal Mohs Scale hardness 7 - lower in impure varieties Luster Vitreous/glossy Refractive index nω = 1.543 - 1.553 nε = 1.552 - 1.554 Optical Properties Uniaxial (+) (Positive) Birefringence +0.009 (B-G interval) Pleochroism None Streak White Specific gravity 2.65 constant; variable in impure varieties Melting point ...
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Diamond News : Uncertainty abounds as sightholders anticipate new list
2007-11-17 12:05:00
November 16, 2007 By Michelle GraffNew York—The Diamond Trading Co. (DTC) acknowledged on Friday that it is an uncertain time for U.S. diamond dealers as they await the Dec. 12 release of the DTC's updated sightholder list.Earlier in the week, in response to this uncertainty, the Diamond Manufacturers and Importers Association of America (DMIA) sent a letter addressed to DTC Managing Director Varda Shine underscoring the importance of retaining as many U.S. sightholders as possible.On Friday, in an e-mail to National Jeweler, the DTC stated that it "understands that this may be a time of uncertainty for some, but we would reassure people that the selection process...doesn't favor anybody."The DMIA's letter, copied to high-ranking government officials including Secretary of State Condoleezza Rice and New York Sen. Hillary Clinton, included an attachment breaking down the amount of aid the United States supplies to African nations, many of which are the world's top diamond pro...
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Ruby : as a mineral
2007-11-10 22:16:00
Ruby is a light pink to blood red gemstone, a variety of the mineral corundum (aluminium oxide). The common red color is caused mainly by the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires. It is considered one of the four precious stones, together with the sapphire, the emerald and the diamond. Improvements used include color alteration, improving transparency by dissolving rutile inclusions, healing of fractures (cracks) or even completely filling them. Prices of rubies are primarily determined by color (the brightest and best "red" called Pigeon Blood Red, command a huge premium over other rubies of similar quality). After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions will indicate the stone has been treated one way or another. Cut and carat (size) also determine the price.more about ruby : http://en.wikipedia.org/wiki/...
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Jewelry Art Awards 2007 of Jewelry Artist Magazine
2007-11-06 22:41:00
source : Jewelry Artis t Jewelry Artist is pleased to announce the winners of our 2007 Jewelry Arts Awards . Entries for our sixth annual competition were judged by Todd Reed, a self-taught goldsmith and metalsmith who has been exploring the use of rough diamonds in his award-winning, signature jewelry since 1992; Robert Diamante, a professional photographer who has been photographing jewelry for the craft industry since 1993; and Thomas Mann, a jeweler committed to both the artistic and business sides of jewelry making, who has been active in the contemporary craft movement for more than 30 years. Congratulations to the winners and our thanks to the judges and everyone who entered.Jewelry Arts Awards 2007 WinnersMiscellaneous Jewelry First Place: Daniel M. Nagy - Best of Competition(also First Place, Miscellaneous Jewelry) Frutto di Mare14K yellow and white gold 353.5g, 3pcs Tahitian pearls 9mm semi baroque, 2pcs 10.5 round AAA grade 86 pcs, 1.659 ct. brilliant cut diamonds. Wax carv...
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Emerald : as a mineral
2007-11-02 00:50:00
Emerald Emerald with host rock General Category Silicate mineral Chemical formula Beryllium aluminium silicate with chromium, Be3Al2(SiO3)6::Cr Identification Color Green Crystal habit Hexagonal Crystals Crystal system Hexagonal Cleavage Poor Basal Cleavage (Seldom Visible) Fracture Conchoidal Mohs Scale hardness 7.5 - 8.0 Luster Vitreous Refractive index 1.576 - 1.582 Pleochroism Distinct, Blue-Green/Yellow-Green Streak White Specific gravity 2.70 - 2.78Emeralds are a variety of the mineral beryl, colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5 - 8 on the 10 point Mohs scale of mineral hardness. Most emeralds are highly included, so their brittleness (resistance to breakage) is classified as generally poor. The origin of the word "emerald" is said to be a Sanskrit word meaning "green".Properties determining value Emeralds come in many shades of green and bluish green. There is a wide spectrum of clarity...
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Jewelry Magazine : Ross-Simons Gets Busy with Two New Titles
2007-10-29 02:38:00
Apr 18, 2006 6:48 PM , By Jim Tierney and John FischerCranston, RI-based jeweler and décor merchant Ross -Simons has launched two new titles. Last month it mailed Via, which sells fashion-forward jewelry. And this month it introduced Global Treasures, specializing in jewelry and gifts from around the world. Via mailed in early March to 1.1 million customers and prospects, primarily women 30-50 years old who have an average annual income of $60,000. This audience is both younger and less affluent than the typical Ross-Simons customer, a 58-year-old woman with an average income of $120,000-$150,000. �We identified a new customer segment that we weren�t capturing,� says Ross-Simons director of merchandising Patricia Ginesky. Ginesky describes Via as �chic, trendy, stylish, edgy, teetering on a little sexy.� With items such as Italian gold hoop earrings for $275 and multistoned necklaces from $225 to $395, Via moves away from Ross-Simons�s mor...
More About: Jewelry , Magazine , Busy , Titles
Sapphire : as a mineral
2007-10-27 22:36:00
General Category Mineral Variety Chemical formula aluminium oxide, Al2O3 Identification Color Every color except red (which is ruby) Crystal habit massive and granular Crystal system Trigonal Cleavage None Fracture Conchoidal, splintery Mohs Scale hardness 9.0 Luster Vitreous Refractive index 1.762-1.778 Pleochroism Strong Streak White Specific gravity 3.95-4.03 Fusibility infusible Solubility insoluble Other Characteristics Coefficient of thermal expansion 5e-6–6.6e-6/KSapphire refers to gem varieties of the mineral corundum, an aluminium oxide (Al2O3), when it is a color other than red. It can be found naturally or manufactured in large crystal boules for varied applications, including infrared optical components, watch faces, high-durability windows, and wafers for the deposition of semiconductors such as GaN nanorods.The mineral corundum consists of pure aluminium oxide. Trace amounts of other elements such as iron, titanium and chromium give ...
Diamond : as a mineral
2007-10-27 22:19:00
Diamond A scattering of round-brilliant cut diamonds shows off the many reflecting facets. General Category Native Mineral s Chemical formula C Identification Molecular Weight 12.01 u Color Typically yellow, brown or gray to colorless. Less often in blue, green, black, translucent white, pink, violet, orange, purple and red. Crystal habit Octahedral Crystal system Isometric-Hexoctahedral (Cubic) Cleavage 111 (perfect in four directions) Fracture Conchoidal - step like Mohs Scale hardness 10[1] Luster Adamantine Polish luster Adamantine Refractive index 2.4175–2.4178 Optical Properties Singly Refractive Birefringence none Dispersion .044 Pleochroism none Ultraviolet fluorescence colorless to yellowish stones - inert to strong in long wave, and typically blue. Weaker in short wave. Absorption spectra In pale yellow stones a 415.5 nm line is typical. Irradiated and annealed diamonds often show a line around 594 nm when cooled to low temperatu...
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