Strata 14K Palladium White Gold and Argentium
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2019 Pricing Grid Numismatic Gold Platinum Palladium Liberty
2019 Pricing of Numismatic Gold, Commemorative Gold, Platinum, and Palladium Products **Does not reflect $5 discount during introductory period Average American Eagle American Eagle American Buffalo American Eagle American Eagle American Liberty Commemorative Gold Commemorative Gold Size Price per Ounce Gold Proof Gold Uncirculated 24K Gold Proof Platinum Proof Palladium Reverse Proof 24K Gold Proof* Uncirculated* $500.00 to $549.99 1 oz $877.50 $840.00 $910.00 $920.00 $937.50 $940.00 1/2 oz $455.00 1/4 oz $240.00 1/10 oz $107.50 $135.00 4-coin set $1,627.50 commemorative gold $240.00 $230.00 commemorative 3-coin set $305.50 $550.00 to $599.99 1 oz $927.50 $890.00 $960.00 $970.00 $987.50 $990.00 1/2 oz $480.00 1/4 oz $252.50 1/10 oz $112.50 $140.00 4-coin set $1,720.00 commemorative gold $252.25 $242.25 commemorative 3-coin set $317.75 $600.00 to $649.99 1 oz $977.50 $940.00 $1,010.00 $1,020.00 $1,037.50 $1,040.00 1/2 oz $505.00 1/4 oz $265.00 1/10 oz $117.50 $145.00 4-coin set $1,812.50 commemorative gold $264.50 $254.50 commemorative 3-coin set $330.00 $650.00 to $699.99 1 oz $1,027.50 $990.00 $1,060.00 $1,070.00 $1,087.50 $1,090.00 1/2 oz $530.00 1/4 oz $277.50 1/10 oz $122.50 $150.00 4-coin set $1,905.00 commemorative gold $276.75 $266.75 commemorative 3-coin set $342.25 $700.00 to $749.99 1 oz $1,077.50 $1,040.00 $1,110.00 $1,120.00 $1,137.50 $1,140.00 1/2 oz $555.00 1/4 oz $290.00 1/10 oz $127.50 $155.00 4-coin set $1,997.50 commemorative gold $289.00 $279.00 commemorative 3-coin set $354.50 $750.00 to $799.99 1 oz $1,127.50 $1,090.00 -
Titanium Alloy Data Sheet
M Titanium Alloy Data Sheet Description Titanium equipment is often used in severe corrosive environments encountered in the chemical processing industries. Titanium has been considered an exotic “wonder metal” by many. This was particularly true in reference to castings. However, increasing demands and rapidly advancing technology have permitted titanium castings to be commercially available at an economical cost. The combination of its cost, strength, corrosion resistance, and service life in very demanding corrosive environments suggest its selection in applications where titanium castings have never been considered in the past. Specifications Flowserve’s commercially pure titanium (C.P.-Ti) castings conform to ASTM Specification B367, Grade C-3. Flowserve’s palladium stabilized titanium (Ti-Pd) castings conform to Grade Ti-Pd 8A. Composition C.P.-Ti (C-3) Ti-Pd (8A) Element Percent Percent Nitrogen 0.05 max. 0.05 max. Carbon 0.10 max. 0.10 max. Hydrogen 0.015 max. 0.015 max. Iron 0.25 max. 0.25 max. Oxygen 0.40 max. 0.40 max. Titanium Remainder Remainder Palladium –– 0.12 min. Minimum C.P.-Ti (C-3) & Mechanical Ti-Pd (8A) and Physical Tensile Strength, psi 65,000 Properties MPa 448 Yield Strength, psi 55,000 MPa 379 Elongation, % in 1" (25 mm), min. 12 Brinell Hardness, 3000 kg, max. 235 Modulus of Elasticity, psi 15.5 x 106 MPa 107,000 Coefficient of Expansion, in/in/°F@ 68-800°F 5.5 x 10-6 m/m/°C @ 20-427°C 9.9 x 10-6 Thermal Conductivity, Btu/hr/ft/ft2/°F @ 400° 9.8 WATTS/METER-KELVIN @ 204°C 17 Density lb/cu in 0.136 kg/m3 3760 Melting Point, °F (approx.) 3035 °C 1668 Titanium Alloy Data Sheet (continued) Corrosion The outstanding mechanical and physical properties of titanium, combined with its Resistance unexpected corrosion resistance in many environments, makes it an excellent choice for particularly aggressive environments like wet chlorine, chlorine dioxide, sodium and calcium hypochlorite, chlorinated brines, chloride salt solutions, nitric acid, chromic acid, and hydrobromic acid. -
The Platinum/Palladium Process
9 The Platinum/Palladium Process OVERVIEW AND EXPECTATIONS In the majority of the classes and workshops that I’ve taught over the years, “the platinum/palladium process” is the answer that surfaces first when I ask the question, “What process do you want to learn the most?” In this chapter you will learn how, and, as in previous chapters, I begin with a little history. Then you will learn the chemistry and sequence of the various stages to a finished print. This chapter gives you alternatives to traditional platinum/palladium chemistry and provides you with a simple sensitizer “drop chart” that is based on the type of negative you are working with, rather than the print you would like to make. I also provide the beginnings of a trouble-shooting list to assist in hunting down problems that may be showing up in your work. Finally, you’ll get some brief alternative ideas for combining platinum/palladium with other techniques such as Van Dyke and gum bichromate. A LITTLE HISTORY Like most refined non-silver and alternative photographic processes, the art of platinum/palladium printing was developed in pieces over time by a number of dedicated artists and scientists. In 1830, Ferdinand Gehlen recorded the action and effects of light on platinum chloride, noting that UV light would alter the color of platinum salts and cause the ferric salts to precipitate out into a ferrous state. At around the same time, Johann Wolfgang Dobereiner (1780–1849) observed the decomposition of ferric oxalate on exposure to UV light and scientifically defined its sensitivity. -
Titanium-Jewelry.Com Offers Wide Variety of Tungsten Wedding Bands
Titanium-Jewelry.com Offers Wide Variety of Tungsten Wedding Bands Released on: July 14, 2011, 4:34 pm Author: Titanium-Jewelry Industry: Retail (Modesto, Calif.) July 2011- Titanium-Jewlery.com, a premier online retailer of men’s jewelry, titanium rings, and wedding bands, is proud to offer a wide variety of men’s tungsten wedding bands, one of the hottest and most sought after options on the market. Whether you are looking for a simple solid tungsten ring, or a band that is mixed with other metals or adorned with diamonds and gems, Titanium- Jewelry.com has nearly 100 options available for your special day. “In the jewelry industry there is no bigger yearly gathering than the JCK Las Vegas convention,” says Ron Yates, founder of Titanium- Jewelry.com. “Just as the Consumer Electronics Show, which also takes place at the Las Vegas Convention Center, shows off what will be the ‘next big thing’ in electronics, the JCK shows what is hot in the jewelry world, and what you can expect the ‘next big thing’ to be both online and at the local jewelry shop. This year the big seller at the convention was mens wedding bands made from tungsten materials. In fact, according to Chad Anderson of Heavy Stone Rings, one of the few manufacturers of U.S. made tungsten rings, tungsten is by no means a ‘fringe’ metal anymore with almost all jewelry stores in the United States offering bands made from tungsten. At Titanium- Jewelry.com, we are not new to tungsten, as we have been offering both wedding and engagement bands featuring the precious metal for years. -
Precious Metal Testing Set Aurotest - ATS 1000
Precious Metal Testing Set AuroTest - ATS 1000 The precious metals testing set - ATS 1000 is a non-destructive and user friendly authenticity analysis system for fine gold bars and gold coins of common sizes and weights from 5 g to 1000 g fineness. Even the analysis of bars and coins made of silver, platinum or palladium is possible with this innovative precious metals testing set. The ATS 1000 utilizes a combined measurement of density and ultrasound speed in metallic materials in order to evaluate the authenticity of fine gold bars and coins. Both methods are based on a thorough volume inspection of the tested precious metal objects and not only on the analysis of a thin surface layer. There is no need any more to send precious metals objects to any assayer or precious metals refiner for authenticity testing. With the testing set ATS 1000 you can check by yourself without any doubts the fineness and homogeneity of your precious metal objects within 5 minutes or Digital ultrasonic velocity gauge of the testing set ATS 1000 with sound probe; upper left corner: opened find out possible fakes. Traditional and light metal case with some parts of the testing set commonly used X-ray fluorescence analysis instruments (XRFA) for that purpose can not detect e.g. hidden precious metal imitates beyond an outer layer thickness of about 10 to 20 micron. Since the year 2009 an increasing number of counterfeited gold bars with weights of 250 g, 500 g and 1000 g - mainly originating from Asia - have been spotted on the international precious metal markets. -
Diamonds: the Perfect Gift to Encourage Stillness and Calm in the Home
World of Colored Gemstones Gemstone Folklore For The Holidays PRESENTED BY olidays, although joyous, are often Amethyst. Once worn to encourage sobriety, accompanied by fatigue, stress, prevent headaches and instill inner peace. Hheartburn and headaches from too Peridot. In ancient references, considered many holiday meals and celebratory toasts. sacred, having a healing effect on the gall- For centuries, gemstones have been prized for bladder and liver. having “legendary” powers. So, before pulling Aquamarine. Considered a highly mystic What’s New, What’s Hot the covers over your head, try mixing a cocktail gem, said to pick up spirits, encourage of colorful gemstones to restore your spirit. serenity, tranquility and hope. Citrine. Healers once thought it to help Whichever gemstone you choose, it will with cleansing, digestion and purifying. bring joy, love, and possibly even “good Chalcedony. A peacemaking gem, thought health” to the wearer. Whether fact or fiction, Diamonds: The Perfect Gift to encourage stillness and calm in the home. if it makes you feel good … wear it! iamonds are the most precious and women’s jewelry, although the pretty Princess valuable of all gems, and they are and classic Cushion cut are fast growing available in a wide range of in popularity. Keep in mind when ADDRESS CORRECTION REQUESTED D sizes, weights, and grades, offering shopping for a diamond, the shape a gift, or self-purchase, to suit is a personal choice, but it is the 226-228 S. Washington Street any budget. From small micro- cut grade that defines how well Shelby, NC 28150 pavé settings to dramatic a diamond’s facets interact solitaires, the diamonds with light. -
THE USE of MIXED MEDIA in the PRODUCTION of METAL ART by Mensah, Emmanuel (B.A. Industrial Art, Metals)
THE USE OF MIXED MEDIA IN THE PRODUCTION OF METAL ART By Mensah, Emmanuel (B.A. Industrial Art, Metals) A Thesis submitted to the School of Graduate Studies, Kwame Nkrumah University of Science and Technology In partial fulfillment of the requirements for the degree of MASTER OF ARTS (ART EDUCATION) Faculty of Art, College of Art and Social Sciences March 2011 © 2011, Department of General Art Studies DECLARATION I hereby declare that this submission is my own work toward the M.A Art Education degree and that, to the best of my knowledge, it contains no materials previously published by another person or material which has been accepted for the award of any other degree of the university, except where due acknowledgement has been made in the text. ……………………………….. ……………………………….. ………………………….. Student’s name & ID Signature Date Certified by ……………………………….. ……………………………….. ………………………….. Supervisor’s Name Signature Date Certified by ……………………………….. ……………………………….. ………………………….. Head of Department’s Name Signature Date ii ABSTRACT The focus of this study was to explore and incorporate various artistic and non artistic media into the production of metal art. The researcher was particularly interested in integrating more non metallic materials that are not traditional to the production of metal art in the decoration, finishing and the protective coating of metal art works. Basic hand forming techniques including raising, chasing and repoussé, piercing and soldering were employed in the execution of the works. Other techniques such as painting, dyeing and macramé were also used. Non metallic media that were used in the production of the works included leather, nail polish, acrylic paint, epoxy, formica glue, graphite, eye pencil, lagging, foam, wood, shoe polish, shoe lace, eggshell paper, spray paint, cotton cords and correction fluid. -
GLOSSARY of PLATING TERMS Acid Gold: a Mildly Acidic Process That Is Used When Plating from 7 to 200 Mils of Gold
GLOSSARY OF PLATING TERMS Acid gold: A mildly acidic process that is used when plating from 7 to 200 mils of gold. The deposits are usually 23kt purity, and it is not usually used as the final finish. Antique: A process which involves the application of a dark top coating over bronze or silver. This coating, either plated or painted, is partially removed to expose some of the underlying metal. Anti-tarnish: A protective coating that provides minimal tarnish protection for a low cost. Barrel plating: A type of mass finishing that takes place in a barrel or tub. Barrel plating is usually requested for very small pieces where pricing must be kept low. Black nickel: A bright or matte, dark plating process that is used to highlight antique finishes. Or, when used as a final color it will range from dark grey to light black. A bright black nickel will yield the darkest color. Bright finish: A high luster, smooth finish. CASS testing: The Copper-Accelerated Acetic Acid Salt Spray test is the same as the Neutral Salt Spray (NSS) test, except it is accelerated, with typical time cycles being 8 and 24 hours. Cold nickel: A non-brightened nickel bath which replicates the original finish, that is, bright areas remain bright and dull areas remain dull. Color: Describes the final top coating (flash) which could be white, silver, 14kt gold (Hamilton), 18kt gold, or 24kt gold (English gold). See "gold flash" and "cyanide gold." Copper: An excellent undercoat in the plating process. Copper provides good conductivity and forms an excellent protective barrier between the base metal and the plate. -
Gemstones by Donald W
GEMSTONES By Donald W. olson Domestic survey data and tables were prepared by Nicholas A. Muniz, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data coordinator. In this report, the terms “gem” and “gemstone” mean any gemstones and on the cutting and polishing of large diamond mineral or organic material (such as amber, pearl, petrified wood, stones. Industry employment is estimated to range from 1,000 to and shell) used for personal adornment, display, or object of art ,500 workers (U.S. International Trade Commission, 1997, p. 1). because it possesses beauty, durability, and rarity. Of more than Most natural gemstone producers in the United states 4,000 mineral species, only about 100 possess all these attributes and are small businesses that are widely dispersed and operate are considered to be gemstones. Silicates other than quartz are the independently. the small producers probably have an average largest group of gemstones; oxides and quartz are the second largest of less than three employees, including those who only work (table 1). Gemstones are subdivided into diamond and colored part time. the number of gemstone mines operating from gemstones, which in this report designates all natural nondiamond year to year fluctuates because the uncertainty associated with gems. In addition, laboratory-created gemstones, cultured pearls, the discovery and marketing of gem-quality minerals makes and gemstone simulants are discussed but are treated separately it difficult to obtain financing for developing and sustaining from natural gemstones (table 2). Trade data in this report are economically viable deposits (U.S. -
US5340529.Pdf
||||||||||I|| USOO5340529A United States Patent (19) 11 Patent Number: 5,340,529 DeWitt et al. (45) Date of Patent: Aug. 23, 1994 54: GOLD JEWELRY ALLOY OTHER PUBLICATIONS 76 Inventors: Troy C. DeWitt; Vicki A. DeWitt, McDonald, Allen S. et al., "The Metallurgy of Some both of 945 Grand Ave., St. Paul, Carat Gold Jewelry Alloys; Part I-Colored Gold Al Minn. 55105 loys,” Gold Bulletin, Jul. 1978, vol. 11, No. 3. 21 Appl. No.: 85,763 Primary Examiner-Richard O. Dean Assistant Examiner-Sean Vincent 22 Filed: Jul. 1, 1993 Attorney, Agent, or Firm-Nawrocki, Rooney & 51) Int. Cl. ................... ... C22C5/02; C22C9/00 Sivertson 52 U.S. Cl. .......................4.20/507 E; 57 ABSTRACT 58 Field of Search ............... 26. % 512 '; A gold based jewelry alloy is disclosed of preferably the 420/.587,483. 148/430, 43,414,419,405,432. 10 to 18 karat range containing primarily gold, copper, 434, 435 zinc and silver. This alloy is formulated to create a unique color, a mid-range hue with a fresh, soft appear 56 References Cited ance that is very complimenting to a variety of skin U.S. PATENT DOCUMENTS tones and gem stones. Aside from characteristics of appearance, the alloy disclosed has an increased hard 3,769,006 10/1973 Ingersoll ............................... 75/165 ness over standard yellow alloys for longer wear and 3,810,755 5/1974 Jordan ................................... 5/165 improved polish holding characteristics. The alloy dis 4,446,102 5/1984 Bales ............ ... 420/507 closed has excellent castability and formability and 5180,551E. /1993.E. S.E.M.Agarwal. -
The Platinum Group Metals As Coating Materials
Issue No. 38 – February 2012 Updated from Original August 2002 Publication The Platinum Group Metals as Coating Materials How precious is your metal - An overview on The platinum group metals consist of platinum and palladium, as well as rhodium, iridium, the use of the platinum osmium, and ruthenium. They can be found in the transition metals on the periodic table of the elements. A close-up of this part of the table is shown in Figure 1. Palladium is currently the group metals as contact surfaces for electronic only metal of the group in widespread use in electrical contacts, although platinum was widely connectors. used in the past. Rhodium is only used in electrical contact applications requiring very high hardness and wear resistance. The other three metals in the group are used mainly in other industrial applications. Pure, electroplated platinum and palladium have a hardness of around 200 to 400 HV, although . Platinum they may also be applied by cladding. Both have a conductivity of around 16% IACS. Thus they are harder than gold, but slightly less conductive. At one time, their prices were . Palladium competitive with gold, and gold-flashed palladium coatings were even used as less expensive alternatives to gold coatings. However, both of these metals are much more expensive than gold . Rhodium (at least at the time of this writing). Due to its cost, gold-flashed palladium is now used mainly in applications which require greater hardness and wear resistance than hard gold alone. Ruthenium Rhodium is much harder than platinum and palladium, typically 800-1000 HV, with an . -
Pulse Plating of Silver-Palladium Alloys
Pulse Plating of Silver-Palladium Alloys By Dong Shou-Jiang, Y. Fukumoto and T. Hayashi Current pulses at 200 to 400 mA/cm2 with an on-time of NaOH. in the unstirred bath at 45° C, alloy coatings of 0.1 msec and an average current density of 4 mA/cm2 3-µm-thick were deposited at 6 coulombs to prepare were the optimum pulsing conditions for depositing samples for inspecting surface morphology and deter- bright, smooth silver alloy containing about 25 percent mining alloy composition. The electrode potential was palladium. Deposit composition appeared to be measured with an oscillograph just before the current was controlled by diffusion polarization. A high overpotential switched off. during pulse plating seemed effective for the formation of Table 1 shows the current wave forms used in this study. fine-grained alloy deposits. Experiments with constant average current density were conducted with variable pulse current density (iP) and variable on- and off-times (ton and toff). Changes in the ilver-palladium alloys have found many applica- concentrations of metal ions in the cathode diffusion layer tions in the electronic industry as a replacement were rather small with the pulsed cycles we adopted, for hard gold on electrical contacts.1 Although permitting an evaluation of the influence of the electrode thiocyanate, 2 cyanide3 and chloride4 baths have potential on alloy deposition. To determine the influence of beens studied, no practical process for plating Ag-Pd alloys the concentration of metal ions, experiments with variable from these solutions has been developed, because the average current density were also conducted using variable deposits had a poor appearance and were limited to a pulse current density and off-time.