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NATIVE PLATINUM

  • Chemistry: Pt, Elemental Platinum
  • Class: Elements
  • Group: Platinum
  • Uses: Important ore of platinum and other rare metals. Platinum metal is used for jewelry, chemical and other industrial uses as well as a currency stabilizer.
  • For natural mineral specimens, see Platinum Specimens
    For Platinum Jewelry, see -->  PLATINUM JEWELRY

    Native platinum is an exotic mineral specimen and an expensive metal. Unfortunately, well formed crystals of platinum are very rare and the common habit of platinum is nuggets and grains. Pure platinum is unknown of in nature as it usually is alloyed with other metals such as iron, copper, gold, nickel, iridium, palladium, rhodium, ruthenium and osmium. The presence of these other metals tends to lower the density of platinum from a pure metal specific gravity of 21.5 to as low as 14 and very rarely any higher than 19 in natural specimens. Few of these rarer metals form significant deposits on their own and thus platinum becomes the primary ore of many of these metals. The presence of iron can lead to a slight magnetism in platinum nuggets and is a common enough property to be considered diagnostic.

    The element platinum is extremely scarce in most crustal rocks, barely seen as even a trace element in chemical analysis of these rocks. However platinum seems to be much more concentrated in the mantle and can be enriched through magmatic segregation. Platinum's origin in the crust is from ultra-mafic igneous rocks and therefore platinum is associated with minerals common to these rocks such as chromite and olivine. Platinum's most common source however is from placer deposits.

    Over the ages, the platinum became weathered out of the igneous rocks and were tumbled down streams and rivers where the extremely heavy grains and nuggets of platinum collect behind rocks and bends in the rivers and streams. These deposits, called placers, that form behind the rocks and bends are enriched in heavy grains as lighter material is carried further down stream. The heaviest grains are the nuggets of gold, platinum and/or other heavy minerals.

    The metal platinum is a valuable metal that is gaining in importance. It is typically more expensive by weight than gold, mostly a product of its scarcity. Platinum is very non-reactive and for this reason it is used in chemical reactions as a catalyst. Metallic platinum can facilitate many chemical reactions without becoming altered in the process. It is also used in many anti-pollution devices, most notable is the catalytic converter, and has been given the nick name the "Environmental Metal". Native platinum is the primary ore of platinum, but deposits containing the rare platinum arsenide, sperrylite of the Pyrite Group, have made a huge contribution to the world's limited supply.

    PHYSICAL CHARACTERISTICS:

    • Color is a white-gray to silver-gray, usually lighter than the platinum color of pure processed platinum.
    • Luster is metallic.
    • Transparency is opaque.
    • Crystal System: Isometric; 4/m bar 3 2/m
    • Crystal Habits include nuggets, grains or flakes, rarely showing cubic forms.
    • Cleavage is absent.
    • Fracture is jagged.
    • Hardness is 4 - 4.5
    • Specific Gravity is 14 - 19+, pure platinum is 21.5 (extremely heavy even for metallic minerals).
    • Streak is steel-gray.
    • Other Characteristics: Does not tarnish, is sometimes weakly magnetic and is ductile, malleable and sectile, meaning it can be pounded into other shapes, stretched into a wire and cut into slices.
    • Associated Minerals include chromite, olivine, enstatite, pyroxene, magnetite and occasionally gold.
    • Notable Occurrences includes Transvaal, South Africa; Ural Mountains, Russia; Columbia and Alaska, USA.
    • Best Field Indicators are color, density, weak magnetism, hardness, associations and ductility.

    Platinum Jewelry - Hover over an item for more information
    "950 Platinum 2mm High Polished Flat Wedding Band"
    "When you commemorate the unforgettable moments of your life with a Sarraf ring, you honor your life story with the finest craftsmanship available. This Platinum classic flat wedding band is 2mm wide and 1.1mm thick."Only $260.00 at Sarraf Jewelry
    no photo"950 Platinum 2mm High Polished Flat Wedding Band"
    $260.00
    Sarraf Jewelry
    1.72 carat Black and White Cubic Zirconia Ring in Platinum over Sterling Silver, Size 6,7,8,9, Size 6,7,8,9
    Rated by 25,000+ Customers. 1.72 TCW Black and White Cubic Zirconia Ring in Platinum over Sterling SilverOnly $94.99 at PalmBeachJewelry
    no photo1.72 carat Black and White Cubic Zirconia Ring in Platinum over Sterling Silver, Size 6,7,8,9, Size 6,7,8,9
    $94.99
    PalmBeachJewelry
    3.10 carat Cushion-Cut Amethysit and Tanzantie Ring in Platinum over Sterling Silver, Size 8, Size 8
    Rated by 25,000+ Customers. 3.10 TCW Cushion-Cut Amethysit and Tanzantie Ring in Platinum over Sterling SilverOnly $94.99 at PalmBeachJewelry
    no photo3.10 carat Cushion-Cut Amethysit and Tanzantie Ring in Platinum over Sterling Silver, Size 8, Size 8
    $94.99
    PalmBeachJewelry
    1.88 carat Round Cubic Zirconia Platinum over Sterling Silver Bridal Engagement Ring Wedding Band Set, Size 10,5,6,7,8,9, Size 10,5,6,7,8,9
    Rated by 25,000+ Customers. 1.88 TCW Round Cubic Zirconia Platinum over Sterling Silver Bridal Engagement Ring Wedding Band SetOnly $85.49 at PalmBeachJewelry
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    $85.49
    PalmBeachJewelry
    1.52 carat Marquise-Cut Lab Created Emerald and Round Cubic Zirconia Accent Ring in Platinum over Sterling Silver, Size 10,5,6,7,8,9, Size 10,5,6,7,8,9
    Rated by 25,000+ Customers. 1.52 TCW Marquise-Cut Lab Created Emerald and Round Cubic Zirconia Accent Ring in Platinum over Sterling SilverOnly $75.99 at PalmBeachJewelry
    no photo1.52 carat Marquise-Cut Lab Created Emerald and Round Cubic Zirconia Accent Ring in Platinum over Sterling Silver, Size 10,5,6,7,8,9, Size 10,5,6,7,8,9
    $75.99
    PalmBeachJewelry
    Emerald and White Topaz Ring in Platinum over Sterling Silver, Size 7, Size 7
    Rated by 25,000+ Customers. Emerald and White Topaz Ring in Platinum over Sterling SilverOnly $66.49 at PalmBeachJewelry
    no photoEmerald and White Topaz Ring in Platinum over Sterling Silver, Size 7, Size 7
    $66.49
    PalmBeachJewelry
    2.89 carat Princess-Cut Cubic Zirconia Platinum-Plated Bridal Engagement Wedding Band Set, Size 10,5,6,7,8,9, Size 10,5,6,7,8,9
    Rated by 25,000+ Customers. 2.89 TCW Princess-Cut Cubic Zirconia Platinum-Plated Bridal Engagement Wedding Band SetOnly $75.99 at PalmBeachJewelry
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    $75.99
    PalmBeachJewelry
    6.31 carat Princess-Cut Cubic Zirconia Platinum over Sterling Silver 3-Stone Bridal Engagement Ring, Size 10,5,6,7,8,9, Size 10,5,6,7,8,9
    Rated by 25,000+ Customers. 6.31 TCW Princess-Cut Cubic Zirconia Platinum over Sterling Silver 3-Stone Bridal Engagement RingOnly $56.99 at PalmBeachJewelry
    no photo6.31 carat Princess-Cut Cubic Zirconia Platinum over Sterling Silver 3-Stone Bridal Engagement Ring, Size 10,5,6,7,8,9, Size 10,5,6,7,8,9
    $56.99
    PalmBeachJewelry
    3.46 carat Round Cubic Zirconia Platinum over Sterling Silver Triple-Halo 3-Stone Ring, Size 10,6,7,8,9, Size 10,6,7,8,9
    Rated by 25,000+ Customers. 3.46 TCW Round Cubic Zirconia Platinum over Sterling Silver Triple-Halo 3-Stone RingOnly $68.38 at PalmBeachJewelry
    no photo3.46 carat Round Cubic Zirconia Platinum over Sterling Silver Triple-Halo 3-Stone Ring, Size 10,6,7,8,9, Size 10,6,7,8,9
    $68.38
    PalmBeachJewelry
    2 Piece 2.50 carat Princess-Cut Cubic Zicronia Bridal Ring Set in Platinum over Sterling Silver, Size 10,6,7,8, Size 10,6,7,8
    Rated by 25,000+ Customers. 2 Piece 2.50 TCW Princess-Cut Cubic Zicronia Bridal Ring Set in Platinum over Sterling SilverOnly $94.99 at PalmBeachJewelry
    no photo2 Piece 2.50 carat Princess-Cut Cubic Zicronia Bridal Ring Set in Platinum over Sterling Silver, Size 10,6,7,8, Size 10,6,7,8
    $94.99
    PalmBeachJewelry
    3.00 carat Baguette-Cut Cubic Zirconia Platinum over Sterling Silver Eternity Band Stackable Ring, Size 10,6,7,8,9, Size 10,6,7,8,9
    Rated by 25,000+ Customers. 3.00 TCW Baguette-Cut Cubic Zirconia Platinum over Sterling Silver Eternity Band Stackable RingOnly $56.99 at PalmBeachJewelry
    no photo3.00 carat Baguette-Cut Cubic Zirconia Platinum over Sterling Silver Eternity Band Stackable Ring, Size 10,6,7,8,9, Size 10,6,7,8,9
    $56.99
    PalmBeachJewelry
    Platinum-Plated Men's Birthstone ''Dad'' Family Ring, Size 10,11,12,7,8,9, Size 10,11,12,7,8,9
    Rated by 25,000+ Customers. Platinum-Plated Men's Birthstone ''Dad'' Family RingOnly $56.99 at PalmBeachJewelry
    no photoPlatinum-Plated Men's Birthstone ''Dad'' Family Ring, Size 10,11,12,7,8,9, Size 10,11,12,7,8,9
    $56.99
    PalmBeachJewelry
    I Said Yes 1/4 CT. T.W. Diamond Wedding Band, White, Womens
    This diamond wedding band is a classic modern symbol of love with its channel set diamonds. Inside lies a lab-created blue sapphire to serve as her something blue. Metal: Platinaire (a blend of sterling silver and 5% platinum)Stone: 1/4 ct. t.w. round...Only $299.99 at jcpenney
    no photoI Said Yes 1/4 CT. T.W. Diamond Wedding Band, White, Womens
    $299.99
    jcpenney
    Platinum-Plated Family Name & Birthstone Ring with DiamonUltra Cubic Zirconia Accent, Size 10,11,12,5,6,7,8,9, Size 10,11,12,5,6,7,8,9
    Rated by 25,000+ Customers. Platinum-Plated Family Name & Birthstone Ring with DiamonUltra Cubic Zirconia AccentOnly $94.99 at PalmBeachJewelry
    no photoPlatinum-Plated Family Name & Birthstone Ring with DiamonUltra Cubic Zirconia Accent, Size 10,11,12,5,6,7,8,9, Size 10,11,12,5,6,7,8,9
    $94.99
    PalmBeachJewelry
    3.00 carat Round Cubic Zirconia Platinum over Sterling Silver Bridal Engagement Ring Set, Size 5,6,7,8,9, Size 5,6,7,8,9
    Rated by 25,000+ Customers. 3.00 TCW Round Cubic Zirconia Platinum over Sterling Silver Bridal Engagement Ring SetOnly $66.49 at PalmBeachJewelry
    no photo3.00 carat Round Cubic Zirconia Platinum over Sterling Silver Bridal Engagement Ring Set, Size 5,6,7,8,9, Size 5,6,7,8,9
    $66.49
    PalmBeachJewelry

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