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GUIDE to the PRECIOUS METALS MARKING ACT and REGULATIONS Cat
GUIDE TO THE PRECIOUS METALS MARKING ACT AND REGULATIONS Cat. No. Iu54-9/2006 ISBN 0-662-49351-6 TABLE OF CONTENTS 1. INTRODUCTION 1 2. DEFINITIONS 2 3. UNAUTHORIZED MARKINGS 3 4. MARKING 4 5. MARKS (REGULATIONS) 6 6. ARTICLES OTHER THAN PLATED ARTICLES 7 7. PLATED ARTICLES 8 8. PLATED POCKET WATCH CASES 10 9. PLATED BRACELET WATCH CASES 12 10. SPECTACLE FRAMES 13 11. PLATED FLATWARE 14 12. PLATED HOLLOW WARE 16 13. TOLERANCES 18 14. EXAMPLES OF MARKINGS 19 15. PARTS EXEMPT FROM ASSAY 20 16. HOW TO CONTACT THE COMPETITION BUREAU 21 1 INTRODUCTION This guide provides an outline to the quality and marking requirements of precious metals articles subject to the Precious Metals Marking Act and the Precious Metals Marking Regulations (hereafter called the Act and Regulations). This document should be read in conjunction with the Act and Regulations which will govern. 1.1 Objectives of the Legislation The Act and Regulations seek: • to ensure that the information provided to consumers on the quality of a precious metal article is not misleading or deceptive; and • to provide for the uniform description and quality marking of precious metal articles, including jewellery, hollow ware, watches, spectacle frames, flatware, etc. in the Canadian marketplace thereby assisting consumers with their purchasing decisions. 1.2 Prohibitions Section 10 of the Act The Act prohibits: • a dealer from applying a mark to a plated article guaranteeing the durability or wear of the precious metal plating for a period of time. • a dealer from selling, importing into Canada or advertising any precious metal article in a manner which is false or misleading as to the precious metal content. -
Improved Tarnish Resistant Sterling Silver
Improved Tarnish Resistant Sterling Silver Michael T. Roche BHP Billiton, Townsville, Queensland, Australia Frank E. Goodwin International Lead Zinc Research Organization, Inc., Research Triangle Park, NC, USA Improved Tarnish Resistant Sterling Silver ABSTRACT A cooperative research program to determine means of delaying tarnishing of sterling silver has been organized by the Silver Research Consortium, a group of silver producers and users seeking to improve uses of silver by carrying out research. Whereas in the past most approaches to improving tarnish resistance have been based on silver alloying additions, this project is taking a scientifically based approach to reducing the rate of tarnishing by use of thin coatings. The general technical approach being taken and an overview of the Silver Research Consortium are given. INTRODUCTION: The principal sterling silver alloy, 92.5% Ag-5.7% Cu, has been used for silverware and jewelry since the 14th century. Alloying with copper strengthens silver and allows it to be used for these items, but it has always been susceptible to tarnishing. Tarnishing is a surface discoloration and mainly results from the formation of silver sulfide, Ag2S, although other compounds have been recently identified which contribute to tarnishing.[1,2] Although tarnishing is not important for industrial applications because it does not change the electrical or contact resistance properties of silver alloys, it is important for applications where appearance is important. Reflecting this importance, many attempts have been made over the years to develop tarnish-resistant alloys that meet the 92.5% silver purity standard which is required if the alloy is to be called “sterling silver.” Some of these have reached limited commercialization, but all add cost and complicate the manufacturing process for sterling silver. -
CHEMICAL POLISHING of NICKEL - SILVER ORNAMENTS MRS MALATHY PUSHPA VANAM, S JOHN and B a SHENOI Central Electrochemical Research Institute, Karaikudi - 623 006
Bulletm of ledr roc hem is try 1 (4) July-August 1985, pp. 381-383 CHEMICAL POLISHING OF NICKEL - SILVER ORNAMENTS MRS MALATHY PUSHPA VANAM, S JOHN AND B A SHENOI Central Electrochemical Research Institute, Karaikudi - 623 006 ABSTRACT A bath composition has been selected for descaling and chemical polishmg of n~ckel-s~lver artcles and the effect of each constituent of the bath on its polishing abllity has been studied. Key words: Chemical polishing, Ni-Ag alloy INTRODUCTION The polished specimens were immediately washed and rinsed. A thin film of the white metal hydroxides still adhering he alloys usually called nickel - silver, white metal or to the surface was removed in order to get a clear brilliant German silver are copper --nickel- zinc alloys or nickel T surface and also to obtain adherent silver coating in the subse- brasses [I]. The three most common Cu - Ni - Zn alloys quent step. Wasing in water alone or brushing did not solve contain 72%, 65% and 55 % copper, 18% nickel and the this problem. Treatment in any mineral acid, however dilute it remainder zinc. They are used in spring applications, gift and be, reduced the lustre of the initial surface. Hence, treatmen' tableware-usually silver plated, in musical and dental in a dilute solution of a complexing agent like EDTA, citric instruments, slide fastenen and as a base metal for moderate acid, tartaric acid etc. capable of complexing nickel and prized jewellery with or without plated coatings [2]. copper salts were tried. The articles after thorough washing Because of the lack of ductility at rqom temperature, this were rinsed and transferred to the silver plating solution. -
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 -
Hallmarking Guidance Notes
HALLMARKING GUIDANCE NOTES PRACTICAL GUIDANCE IN RELATION TO THE HALLMARKING ACT 1973 INFORMATION FROM THE ASSAY OFFICES OF GREAT BRITAIN London Edinburgh Birmingham Sheffield Guaranteeing The Quality Of Precious Metals Since 1327 HALLMARKING GUIDANCE NOTES HALLMARKING GUIDANCE NOTES THE PURPOSE OF THESE HALLMARKING PRECIOUS METALS GUIDANCE NOTES WHY ARE PRECIOUS METAL ARTICLES The purpose of these notes is to give practical guidance in relation to the HALLMARKED? Hallmarking Act 1973 and subsequent amendments. No reliance must be placed on the document for a legal interpretation. The UK Assay Offices are happy to Silver, palladium, gold and platinum are rarely used in their purest form but answer questions arising from these guidance notes and on any articles or other instead they are normally alloyed with lesser metals in order to achieve a issues not specifically mentioned. desired strength, durability, colour etc. It is not possible to detect by sight or by touch the gold, silver, platinum or palladium content of an item. It is therefore a legal requirement to hallmark CONTENTS OF THIS BOOKLET: all articles consisting of silver, palladium, gold or platinum (subject to certain exemptions) if they are to be described as such. Contents Page The main offence under the UK Hallmarking Act 1973 is based on description. It is Hallmarking precious metals 3 - 17 an offence for any person in the course of trade or business to: Guidance on describing precious metals 18 - 19 • Describe an un-hallmarked article as being wholly or partly made of silver, palladium, gold or platinum. Contact details for UK Assay Offices Back Page • Supply or offer to supply un-hallmarked articles to which such a description is applied. -
Metals and Metal Products Tariff Schedules of the United States
251 SCHEDULE 6. - METALS AND METAL PRODUCTS TARIFF SCHEDULES OF THE UNITED STATES SCHEDULE 6. - METALS AND METAL PRODUCTS 252 Part 1 - Metal-Bearing Ores and Other Metal-Bearing Schedule 6 headnotes: Materials 1, This schedule does not cover — Part 2 Metals, Their Alloys, and Their Basic Shapes and Forms (II chemical elements (except thorium and uranium) and isotopes which are usefully radioactive (see A. Precious Metals part I3B of schedule 4); B. Iron or Steel (II) the alkali metals. I.e., cesium, lithium, potas C. Copper sium, rubidium, and sodium (see part 2A of sched D. Aluminum ule 4); or E. Nickel (lii) certain articles and parts thereof, of metal, F. Tin provided for in schedule 7 and elsewhere. G. Lead 2. For the purposes of the tariff schedules, unless the H. Zinc context requires otherwise — J. Beryllium, Columbium, Germanium, Hafnium, (a) the term "precious metal" embraces gold, silver, Indium, Magnesium, Molybdenum, Rhenium, platinum and other metals of the platinum group (iridium, Tantalum, Titanium, Tungsten, Uranium, osmium, palladium, rhodium, and ruthenium), and precious- and Zirconium metaI a Iloys; K, Other Base Metals (b) the term "base metal" embraces aluminum, antimony, arsenic, barium, beryllium, bismuth, boron, cadmium, calcium, chromium, cobalt, columbium, copper, gallium, germanium, Part 3 Metal Products hafnium, indium, iron, lead, magnesium, manganese, mercury, A. Metallic Containers molybdenum, nickel, rhenium, the rare-earth metals (Including B. Wire Cordage; Wire Screen, Netting and scandium and yttrium), selenium, silicon, strontium, tantalum, Fencing; Bale Ties tellurium, thallium, thorium, tin, titanium, tungsten, urani C. Metal Leaf and FoU; Metallics um, vanadium, zinc, and zirconium, and base-metal alloys; D, Nails, Screws, Bolts, and Other Fasteners; (c) the term "meta I" embraces precious metals, base Locks, Builders' Hardware; Furniture, metals, and their alloys; and Luggage, and Saddlery Hardware (d) in determining which of two or more equally specific provisions for articles "of iron or steel", "of copper", E. -
Hollands (800) 232-1918 2012 Fine Western Jewelry Since 1936 Fax (325) 653-3963
RETAIL (325) 655-3135 PRICELIST HOLLANDS (800) 232-1918 2012 FINE WESTERN JEWELRY SINCE 1936 FAX (325) 653-3963 Page 2&3 SPUR JEWELRY Regular Junior Spurette Necklace Spurette Earrings 1 3/8" tall 1" tall 5/8" tall 5/8" tall R-P-A $185 J-P-A $185 SN-P-A $160 SE-P-A $ 320 R-P-B 230 J-P-B 230 SN-P-B 190 SE-P-B 380 R-P-C 260 J-P-C 260 SN-P-C 215 SE-P-C 415 R-HC-A 215 J-HC-A 215 SN-HC-A 175 SE-HC-A 350 R-HC-B 260 J-HC-B 260 SN-HC-B 205 SE-HC-B 410 R-HC-C 290 J-HC-C 290 SN-HC-C 230 SE-HC-C 460 R-GO-A 270 J-GO-A 270 SN-GO-A 230 SE-GO-A 460 R-GO-B 320 J-GO-B 320 SN-GO-B 260 SE-GO-B 520 R-GO-C 350 J-GO-C 350 SN-GO-C 290 SE-GO-C 580 R-G-A 1100 J-G-A 900 SN-G-A 625 SE-G-A 1250 R-G-B 1250 J-G-B 1050 SN-G-B 725 SE-G-B 1450 R-G-C 1250 J-G-C 1050 SN-G-C 725 SE-G-C 1450 Spur necklace is price above plus chain. Spur necklace is price above plus chain. Spurette pin is price of spurette necklace plus $35.00. Cufflinks are price above multiplied by two. -
Precious-Metal-Base Advanced Materials T
Precious-metal-base advanced materials T. Nowicki, C. Carbonnaux To cite this version: T. Nowicki, C. Carbonnaux. Precious-metal-base advanced materials. Journal de Physique IV Pro- ceedings, EDP Sciences, 1993, 03 (C7), pp.C7-509-C7-518. 10.1051/jp4:1993782. jpa-00252202 HAL Id: jpa-00252202 https://hal.archives-ouvertes.fr/jpa-00252202 Submitted on 1 Jan 1993 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. JOURNAL DE PHYSIQUE IV Colloque C7, supplCment au Journal de Physique 111, Volume 3, novembre 1993 Precious-metal-base advanced materials T. NOWCKI and C. CARBONNAUX CLAL, Centre de Recherches, 8 rue Portefoin, 75003 Paris, France ABSTRACT The precious metals are basically known for their applications in jewelry, coins, bullions and catalysis. The reality is thas prcdous - 3tals constitute also the base of several advanced materials used in the industry in hundreds of metric tom. Since forties, platinum alloys have been used as structural materials for quipments in the glass industry. The essential reason for this is the excellent resistance of platinum doys to oxidation and elcmolytical corrosion in molten glasses at temperatures as high as l2fX-LWC. -
Jewlery & Silver Jewlery & Silver
JEWLERY & SILVER JEWLERY & SILVER Lot# Description Lot# Description 1 4 LOT OF GOLD FILLED JEWELRY INCL. WRIST WATCH, TIE CLASP, GERMAN SILVER MESH PURSE 2 BRACELETS & NECKLACE 2 5 HEMATITE & STONE NECKLACE AND GOLD FILLED JEWELRY INCL. 2 COPPER CUFF BRACELET LAVALIERS, LOCKET WITH CHAIN & EARRINGS 6 3 GOLD FILLED NECKLACE & EARRING SET LOT OF GOLD FILLED JEWELRY INCL. 2 PR. EARRINGS, 2 PINS, 4 NECKLACES WITH PENDANTS, 2 CHAINS & PR. PINCE-NEZ GLASSES WITH CHAIN JEWLERY & SILVER JEWLERY & SILVER Lot# Description Lot# Description 7 10 COPPER JEWELRY - RENOIR BRACELET & EARRINGS & ALSO LOT WITH 2 NECKLACES & 3 PINS (NOT RENOIR) PIN & PR. EARRINGS MARKED STERLING - 21.8 DWT 11 8 2 MEXICAN SILVER PINS - 15 DWT LOT MARKED .925 OR TESTED OF JEWELRY INCL. EARRINGS & NECKLACE - 14.4 DWT 12 3 PR. EARRINGS & 1 PENDANT MARKED .925 - 27.4 DWT 9 WIDE STERLING HINGED BRACELET & BRACELET WITH ANIMAL CHARMS 22.1 DWT 13 STERLING JEWELRY LOT - BRACELET, PINS & EARRINGS 33.5 DWT JEWLERY & SILVER JEWLERY & SILVER Lot# Description Lot# Description 14 18 STERLING GENTS JEWELRY - 20.4 DWT STERLING SILVER SNAKE CHAIN - 4.0 DWT. 15 GENTS SET WITH STERLING FRONTS 19 16 STERLING THIMBLE, RING, 2 PINS & CHARM - 15.0 DWT ROSE PIN MARKED .800 - 2.1 DWT. 20 17 STERLING RATTLE, RING & NECKLACE - 17.5 DWT 2 PR. STERLING EARRINGS - 1.1 DWT JEWLERY & SILVER JEWLERY & SILVER Lot# Description Lot# Description 25 21 4 PR. STERLING EARRINGS - 9.8 DWT 2 STERLING PINS - 1 ENAMELED SIAM - 11.4 DWT. 26 22 STERLING LOT - 2 PINS, BRACELET & STERLING LOT - MATCHING 3 PR. -
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. -
Care and Cleaning of Silverplate & Sterling Silver Cutlery
Care and cleaning of Silverplate & Sterling Silver Cutlery HANDWASHING Wash your cutlery in hot soapy water, using a sponge or nylon brush, as soon as possible after each use. Use a ‘mild’ detergent and avoid any containing lemon or vinegar. Rinse in hot water and dry thoroughly with a soft cloth. Do not allow to ‘air dry’. Store in dry conditions DISHWASHER Cutlery manufacturers recommend: DO NOT overload the cutlery basket. Pack cutlery with the handles down so that the knife blades, spoon bowls and fork tines are uppermost, ensuring that there is room for water to circulate. Separate knives from other cutlery components DO NOT mix metals, as different metals can ‘react’ with each other in the dishwasher, causing a stain ie: ensure that aluminium and stainless steel are separated from each other. Do rinse well as soon as possible after each use, before placing in dishwasher Do use correct quantities of dishwashing detergent and Rinse Aid as recommed by the dishwashing manufacturer. Detergent is highly chlorinated and can cause dulling and discolouration of stainless steel if excessive amounts are used. The long washing and drying cycles of dishwashers mean lengthy periods in humid conditions, which can encourage corrosion Do remove cutlery from the dishwasher as soon as possible after the cycle has finished and dry thoroughly with a soft cloth if water remains. Store cutlery in a dry environment Xylo or bone handled knives should NEVER be washed in the dishwasher. The handles should NEVER be placed in hot water as they will discolour POLISHING YOUR SILVERPLATE AND STERLING SILVER CUTLERY Tarnishing is the oxidation that occurs when silver comes in contact with acid foods such as Lemon, Vinegar, meat juices etc. -
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.