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Frequently Asked Questions (FAQ) GemSelect.com
Categories
Shipping
Payment
Guarantee and Returns
Gem Information
GemSelect Website
Accounts
Shipping
»  What countries do you ship to?
»  Is the shipping cost per item or per package?
»  Do I have to pay import duty or tax on gemstones I buy from GemSelect?
»  Can I have my order shipped to a different address than my billing address?
»  How can I track delivery of my order?
»  What happens if my order is lost in the mail?
»  See more detailed shipping information here
Payment
»  What forms of payment do you accept?
»  Do you accept payment by international money order?
»  Do you accept payment by wire transfer from my bank?
»  I don't have a credit card. How can I buy from you?
»  Do you accept payment by American Express?
»  Is my credit card information secure?
»  See more detailed payment information here
Guarantee and Returns
»  Do you provide certificates for your gems?
»  Do you provide appraisals of the gems you sell?
»  How do I return a gem to you?
»  During what period can I return a gem to you?
»  See more detailed payment information here
Gem Information
»  Are all your gems natural?
»  What is a calibrated gem?
»  I need a 7 x 5 mm gem for a standard setting. How much can a gem vary from 7 x 5 mm and still fit?
»  Where can I find a list of the standard calibrated sizes for gems?
»  Are there any kinds of gemstones that are always untreated?
»  Why do some gems show a color change?
»  Do you sell green amethyst?
»  How do I determine that a sapphire has not been heated?
»  Can you certify country of origin for your gemstones?
»  Which gems have the most brilliance and fire?
»  Do you have a printed catalogue? How do I get a copy?
»  What is the difference between jade and jadeite?
»  Is all red tourmaline called rubellite?
»  Can I buy two or more of a particular gem on your website?
»  Do you sell a gem called asparagus stone?
»  How do I tell if an amethyst or citrine is synthetic?
»  Do you sell a gem named cordierite?
»  Why are many cabochons unfinished on the bottom?
»  Why do so many gemstone names end in "ite"?
»  Is there a difference between brilliance and luster in gemstones?
»  Most of your gems are graded with letters like VVS and VS, but some are not. Why is that?
»  Is there such a thing as red sapphire?
»  Do diamond testing devices really work? Can they tell real from fake diamonds?
»  What is the most durable gemstone?
»  What is "color of streak"? Is it important?
»  What is "specific gravity" for gemstones? What does it measure?
»  How can I tell if a gem is "windowed"?
»  I recently purchased some gemstones and they were smaller than I expected. Can you help me?
»  What does "cabochon" mean?
»  Why are some gemstones cut in facets and others as cabochons?
»  What is the difference between an opal doublet and a normal opal?
»  Why do some gems have 3 measurement, like 6 x 4 x 3 mm, but some have only one or two measurements. Why is that?
»  Why are many tourmalines cut in long narrow bars? I don't see many other gems cut that way. Is it just the fashion now?
»  What is a concave cut? How is it produced?
»  What is "Portuguese cut"? How is it different from other cuts?
»  What is the significance of the refractive index of a gemstone? Is a higher value better?
»  What does "birefringence" refer to? I don't know if my gem has it.
»  Why are certain rubies referred to as having the color of "pigeon's blood"?
»  What are your best selling gemstones?
»  How many different kinds of gems are there in the world?
»  Which gemstones are copper-bearing?
»  What is mystic topaz?
»  What is the rarest gemstone?
»  How do gemstones get their color?
»  What is the scale used to measure the hardness of gemstones?
»  Where can I find a list of birthstones for the different months?
»  What is the difference between sapphire and tanzanite?
»  Do you buy gemstones?
»  See all of our gemstone information here
GemSelect Website
»  How do I search gems by color rather than gem name?
»  I tried to put some gems in my cart but I can't see them. What am I doing wrong?
»  How often do you add new gems to your website? What day should I look to see the new gems? Do you buy gems?
»  I bought some gems last month. How do I find all the detailed information about them now?
»  I added 4 gems to my cart and the next day 2 of them were gone. What happened?
»  Do you have an archive of newsletters? How do I access older newsletters?
»  See all of our content here
Accounts
»  Do I need to register to buy from GemSelect?
»  How do I subscribe for your newsletter?
»  I forgot my password and can't login. What can I do?
»  How do I change my account information?
»  Go to the account login page here

 

  • Première publication: February-20-2006
  • Dernière mise à jour: September-09-2019
  • © 2005-2019 GemSelect.com tous droits réservés.
    Reproduction (texte ou graphique), sans le consentement écrit de GemSelect.com (SETT Company Ltd) est strictement interdite.
Pinterest Board Names
More Shapes
Pierres précieuses populaires
  • Saphir
  • Émeraude
  • Rubis
  • Aigue marine
  • Zircon
  • Opale
  • Topaze
  • Tourmaline
  • Grenat
  • Améthyste
  • Citrine
  • Tanzanite
Toutes les pierres précieuses (145)
A B C D E F G H I J K L M N O P Q R S T V Z É Œ
  • Actinolite Œil de chat
  • Agate
  • Agate Géode
  • Agate de Feu
  • Aigue marine
  • Amazonite
  • Ammolite
  • Améthyste
  • Amétrine
  • Andalousite
  • Andésine Labradorite
  • Apatite
  • Augite œil de Chat
  • Aventurine
  • Béryl
  • Béryl doré
  • Calcite
  • Calcédoine
  • Charoïte
  • Chrysobéryl
  • Chrysocolle
  • Chrysoprase
  • Citrine
  • Corail
  • Corail de Fossile
  • Cornaline
  • Dendritique Agate
  • Diamant
  • Diaspore Couleur Changeant
  • Diopside Chrome
  • Diopside Étoilé
  • Disthène
  • Druzy Amethyst
  • Druzy Azurite
  • Druzy Citrine
  • Enstatite
  • Flocon de Neige Obsidienne
  • Fluorine
  • Fluorite avec changement de couleur
  • Grandidierite
  • Grenat
  • Grenat Almandin
  • Grenat Couleur Changeant
  • Grenat Démantoïde
  • Grenat Grossulaire
  • Grenat Hessonite
  • Grenat Malaya
  • Grenat Mali
  • Grenat Pyrope
  • Grenat Rhodolite
  • Grenat Spessartite
  • Grenat Tsavorite
  • Grenat Étoilé
  • Hiddénite
  • Howlite
  • Hématite
  • Hémimorphite Druse
  • Idocrase
  • Iolite
  • Jadéite
  • Jaspe
  • Jaspe Sanguin
  • Kornerupine
  • Kunzite
  • Labradorite
  • Lapis-lazuli
  • Larimar
  • Malachite
  • Maw-Sit-Sit
  • Morganite
  • Nacre
  • Nuummite
  • Obsidienne
  • Oeil de Chat Aigue-Marine
  • Oeil de Chat Quartz
  • Oeil de Tigre
  • Oeil de Tigre Matrice
  • Oeil de chat Apatite
  • Oeil de chat Scapolite
  • Oeil de chat Sillimanite
  • Oeil de chat de la Pierre de Lune
  • Opale
  • Opale Boulder
  • Opale Chocolat
  • Opale Doublet
  • Opale Mousse
  • Opale Noir
  • Opale de Feu
  • Opale en Matrice
  • Opale œil de chat
  • Perle
  • Pierre de Lune
  • Pierre de Lune Arc en Ciel
  • Pierre de Lune Étoilé
  • Pierre de Soleil Étoilé
  • Pierre de Soleil 
  • Pierre précieuse étoiles
  • Pierres précieuses Jade
  • Pierres précieuses oeil de chat
  • Pietersite
  • Prehnite
  • Pyrite
  • Pyrite Arc en Ciel
  • Péridot
  • Quartz
  • Quartz Citron étoilé
  • Quartz Fraise
  • Quartz Fumé
  • Quartz Mystique
  • Quartz Rose
  • Quartz Rose Étoilé
  • Quartz Rutile
  • Quartz avec marcassite
  • Rhodochrosite
  • Rhodonite
  • Rubellite Tourmaline
  • Rubis
  • Rubis en Fuchsite
  • Rubis Étoilé
  • Rubis-Zoisite
  • Saphir
  • Saphir couleur-Changeant
  • Saphir Étoilé
  • Scolécite
  • Seraphinite
  • Serpentine
  • Sillimanite
  • Smithsonite
  • Sodalite
  • Spectrolite
  • Sphalérite 
  • Sphène
  • Spinelle
  • Sugilite
  • Tanzanite
  • Topaze
  • Topaze Imperiale
  • Topaze Mystique
  • Tourmaline
  • Tourmaline Chrome
  • Turquoise
  • Variscite
  • Zircon
  • Émeraude
  • Œil de faucon
Main Categories
  • Nouveautés
  • Lots de pierres précieuses
  • Pierres précieuses calibrées
  • Pierres gemmes à la pièce
  • Des pierres précieuses d'excellentes qualités
  • Paires correspondant
  • Pierres précieuses cabochon
  • Drilled Gems, Briolettes and Beads
  • Pierre de naissance
  • Sculptures en pierres précieuses
  • Pierres précieuses fantaisie
  • Pierre précieuse étoiles
  • Saphir non chauffé
Support à la clientèle en parlant d'anglaise seulement

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International:
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Taille et poids

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