search
  • Iscriviti
    Registrati
  • Solo per i clienti di lingua inglese

    Gratuito - Solo USA e Canada:
    1-800-464-1640

    Internazionale:
    +66-39303404

  • Change Language
  • USD

Copper-bearing Gemstones

When Paraiba tourmaline first reached the market in the early 1990s, it led to a tremendous interest in copper-bearing gemstones. We receive many emails from customers asking whether particular gems in our inventory are copper-bearing. There seems to be a perception in the market that a gem containing traces of copper is inherently valuable. Is this a reasonable assumption?

Paraiba Tourmaline Gemstone
Paraiba Tourmaline Gemstone

Copper is a particularly valuable mineral. The average American home is said to contain over 400 pounds of copper - in the plumbing, wiring, appliances, cookware and so on. So if you really want copper you don't need to leave home to find it. Your home is significantly copper-bearing, as are the coins in your pocket.

Buy Natural Paraiba Tourmaline from GemSelectWith regard to minerals, there are about 160 different ones that contain copper. Indeed, there are also various gemstone-grade minerals to choose from. They include malachite, azurite, turquoise, chrysocolla, gem silica (chyrsocolla chalcedony quartz), larimar, Oregon sunstone and, of course, Paraiba tourmaline.

Staue of Liberty in New YorkMany of these copper-bearing minerals are quite inexpensive. We sell attractive turquoise for less than three dollars per carat. Azurite is even cheaper, though lapis lazuli is usually preferred for its better color and hardness. Chrysocolla, another soft and inexpensive gemstone, is even cheaper than turquoise.

In fact the only truly expensive copper-bearing gemstone is Paraiba tourmaline. Since there are lots of other copper-bearing gems, why is Paraiba tourmaline so pricey? It can't be just because it is copper-bearing.

Paraiba tourmaline is valuable because of its unique and outstanding color, and the fact that it is extremely rare. It wouldn't matter how much copper it contained if it didn't have that neon blue-green glow.

Natural Paraiba Tourmaline from MozambiqueIsn't it precisely because Paraiba tourmaline contains copper that it has that outstanding color? Well, yes and no. The distinctive blue-green color is characteristic of copper oxide. That's why turquoise has its wonderful color, and this is also why the largest copper structure in the world, the Statue of Liberty in New York, has acquired a marvelous green patina. However, Paraiba tourmaline is not only colored by copper, it is also colored by traces of manganese. Gemologists believe that the combination of copper and manganese is responsible for Paraiba tourmaline's unusually vivid color.

It's also worth keeping in mind that Paraiba tourmaline is the only transparent gemstone that contains copper. Other copper-bearing gems, such as turquoise, have that lovely blue-green characteristic of copper, but the effect is quite different in an opaque gem.

Natural Turquoise at GemSelectMost of the Paraiba tourmaline available on the market right now is from Mozambique. Mozambique also produces a wide range of terrific tourmaline colors. Don't assume that just because some tourmaline is from Mozambique that it is the especially valuable copper-bearing variety. It is the vivid Paraiba color that makes some tourmaline especially valuable, not simply the presence of copper in its composition. Pink, green or red tourmaline from Mozambique is not very likely to contain copper and even if it did, the copper would not increase the gem's value, since those colors are not especially rare.

  • Prima Pubblicazione: February-04-2008
  • Ultima modifica: January-22-2019
  • © 2005-2021 GemSelect.com Tutti i diritti riservati.
    Qualsiasi riproduzione (testi o immagini) è strettamente proibita senza esplicita autorizzazione scritta da parte di GemSelect.com (SETT Company Ltd.).
More Shapes
Le pietre più conosciute
  • Zaffiro
  • Smeraldo
  • Rubino
  • Acquamarina
  • Zircone
  • Opale
  • Topazio
  • Tormalina
  • Granato
  • Ametista
  • Citrino
  • Tanzanite
Tutte le pietre preziose (141)
A B C D E F G H I K L M N O P Q R S T V Z
  • Acquamarina
  • Acquamarina effetto occhio di gatto
  • Agata
  • Agata dendritica
  • Agata di fuoco
  • Amazzonite
  • Ametista
  • Ametrine
  • Ammolite
  • Andalusite
  • Andesina Labradorite
  • Apatite
  • Apatite effetto occhio di gatto
  • Avventurina
  • Azzurrite druzy
  • Berillo
  • Berillo dorato
  • Calcedonio
  • Calcite
  • Cat's Eye Opal
  • Charoite
  • Cianite
  • Citrino
  • Clinohumite
  • Corallo
  • Corallo fossile
  • Cornerupina
  • Corniola
  • Crisoberillo
  • Crisocolla
  • Crisoprasio
  • Cromo diopside
  • Diamante
  • Diaspro
  • Diaspro cangiante
  • Diopside stellato
  • Druse emimorfite
  • Druzy Amethyst
  • Eliolite
  • Eliolite o pietra del sole
  • Eliolite o pietra del sole stellata
  • Ematite
  • Ematite o pietra del sangue
  • Enstatite
  • Fluorite
  • Fluorite che cambia colore
  • Gemme gatteggianti
  • Giada
  • Giadeite
  • Granato
  • Granato Malaya
  • Granato almandino
  • Granato cangiante
  • Granato del Mali
  • Granato demantoide
  • Granato di rodolite
  • Granato essonite
  • Granato grossularia
  • Granato piropo
  • Granato spessartite
  • Granato stellato
  • Granato tsavorite
  • Grandidierite
  • Howlite
  • Hyalite Opal
  • Idocrasio
  • Il geode di agata
  • Kunzite
  • Labradorite
  • Lapislazzulo
  • Larimar
  • Madreperla
  • Malachite
  • Matrice di occhio di tigre
  • Maw-Sit-Sit
  • Morganite
  • Nuummite
  • Occhio di gatto actinolite
  • Occhio di tigre
  • Occhio di tigre blu
  • Opale
  • Opale cioccolato
  • Opale doppietta
  • Opale macigno
  • Opale nera
  • Opale di fuoco
  • Opali in Matrice
  • Ossidiana
  • Ossidiana fiocco di neve
  • Peridoto
  • Perla
  • Pietersite
  • Pietra di Luna effetto occhio di gatto
  • Pietra di luna
  • Pietra di luna arcobaleno
  • Pietra di luna stellata
  • Pietre cangianti
  • Pietre stellate
  • Pirite arcobaleno
  • Prehnite
  • Pyrite
  • Quartz With Marcasite
  • Quarzo
  • Quarzo citrino stellato
  • Quarzo effetto occhio di gatto
  • Quarzo fragola
  • Quarzo fumé
  • Quarzo rosa
  • Quarzo rosa stellato
  • Quarzo rutilato
  • Rodocrosite
  • Rubino
  • Rubino in fuchsite
  • Rubino stellato
  • Rubino zoisite
  • Scapolite
  • Scapolite effetto occhio di gatto
  • Scolecite
  • Serafinite
  • Serpentinite
  • Sfalerite
  • Sfene
  • Sillimanite
  • Sillimanite effetto occhio di gatto
  • Smeraldo
  • Smithsonite
  • Sodalite
  • Spectrolite
  • Spinello
  • Tanzanite
  • Topazio
  • Topazio imperiale
  • Topazio mistico
  • Tormalina
  • Tormalina rubellite
  • Turchese
  • Variscite
  • Zaffiro
  • Zaffiro cangiante
  • Zaffiro stellato
  • Zircone
Main Categories
  • Nuovi arrivi
  • Lotti di gemme
  • Gemme calibrate
  • Gemstones By Piece
  • Le pietre di massimo livello
  • Coppie
  • Gemme in cabochon
  • Drilled Gems, Briolettes and Beads
  • Le pietre portafortuna
  • Pietre incise
  • Gemme fantasia
  • Pietre stellate
  • Zaffiro non riscaldato
Solo per i clienti di lingua inglese

Gratuito - Solo USA e Canada:
1-800-464-1640

Internazionale:
+66-39303404

Risparmia denaro
Senza spese di spedizione per articoli aggiuntivi!
$8.90 spedizione in tutto il mondo

Update Translation
 
Current Value
New Value
GemSelect Gemstones
X Chiudi finestra
Colored Gemstones
X Chiudi finestra
Colored Gemstones
X Chiudi finestra
Colored Gemstones
Dimensioni e peso

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart