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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

 

  • Primera publicación: February-20-2006
  • Última actualización: September-09-2019
  • © 2005-2019 Reproducción (texto o gráficos), sin el consentimiento expreso por escrito de GemSelect.com (SETT Compañía Ltda.) es estrictamente prohibida.
Pinterest Board Names
More Shapes
Piedras Preciosas Populares
  • Zafiro
  • Esmeralda
  • Rubí
  • Aguamarina
  • Circón
  • Ópalo
  • Topacio
  • Turmalina
  • Granate
  • Amatista
  • Citrina
  • Tanzanita
Todas las gemas (144)
A B C D E F G H I J K L M N O P R S T V Z Á Ã Ó
  • Aguamarina
  • Aguamarina Ojo de Gato
  • Amatista
  • Amazonita
  • Ametrina
  • Amolita
  • Andalucita
  • Andesina Labradorita
  • Apatita
  • Apatita Ojo de Gato
  • Augita ojo de gato
  • Azurita Druzy
  • Berilo
  • Berilo Dorado
  • Calcedonia
  • Calcita
  • Charoita
  • Chrysocolla
  • Cianita
  • Circón
  • Citrina
  • Coral
  • Coral Fósil
  • Cornalina
  • Crisoberilo
  • Crisoprasa
  • Cromodiópsido
  • Cuarzo
  • Cuarzo Ahumado
  • Cuarzo Fresa
  • Cuarzo Limón Estrella
  • Cuarzo Místico
  • Cuarzo Ojo de Gato
  • Cuarzo Rosa
  • Cuarzo Rosa Estrella
  • Cuarzo Rutilado
  • Cuarzo con marcasita
  • Diamante
  • Diásporo con Cambio de Color
  • Diópsido Estrella
  • Doblete de Ópalo
  • Druzy Amethyst
  • Enstatita
  • Escapolita Ojo de Gato
  • Escolecita
  • Esfalerita
  • Esfena
  • Esmeralda
  • Esmitsonita
  • Espectrolita
  • Espinela
  • Fluorita
  • Fluorita con Cambio de Color
  • Fucsita con Rubí
  • Gemas de estrella
  • Gemas de jade
  • Geoda ágata
  • Granate
  • Granate Alamandino
  • Granate Demantoide
  • Granate Espesartina
  • Granate Estrella
  • Granate Grossularita
  • Granate Hesonita
  • Granate Malaya
  • Granate Piropo
  • Granate Rodolita
  • Granate Tsavorita
  • Granate con Cambio de Color
  • Grandidierita
  • Hematita
  • Hemimorfita Druzy
  • Hiddenita
  • Howlita
  • Idocrasa
  • Iolita
  • Jadeíta
  • Jaspe
  • Kornerupina
  • Kunzita
  • Labradorita
  • Lapislázuli
  • Larimar
  • Madreperla
  • Malaquita
  • Mali Granate
  • Matriz Ojo de Tigre
  • Maw-Sit-Sit
  • Morganita
  • Nuummite
  • Obsidiana
  • Obsidiana Copo de Nieve
  • Ojo de Gato Actinolita
  • Ojo de Halcón
  • Ojo de Tigre
  • Ojos de gato
  • Peridoto
  • Perla
  • Piedra de Luna
  • Piedra de Luna Arco Iris
  • Piedra de Luna Estrella
  • Piedra de Luna Ojo de Gato
  • Piedra de Sangre
  • Piedra del Sol
  • Piedra del Sol Estrella
  • Pietersita
  • Pirita
  • Pirita Arco Iris
  • Prehnite
  • Rodocrosita
  • Rodonita
  • Rubellita Turmalina
  • Rubí
  • Rubí Estrella
  • Rubí-Zoisita
  • Serafinita
  • Serpentina
  • Silimanita
  • Silimanita Ojo de Gato
  • Sodalita
  • Sugilita
  • Tanzanita
  • Topacio
  • Topacio Imperial
  • Topacio Místico
  • Turmalina
  • Turmalina Cromo
  • Turquesa
  • Variscita
  • Venturina
  • Zafiro
  • Zafiro Estrella
  • Zafiro con Cambio de Color
  • Ágata
  • Ágata Dendrítica
  • Ágata de Fuego
  • Ópalo ojo de gato
  • Ópalo
  • Ópalo Boulder
  • Ópalo Chocolate
  • Ópalo Moss
  • Ópalo Negro
  • Ópalo de Fuego
  • Ópalo en matriz
Main Categories
  • Nuevas llegadas
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  • Las Piedras Preciosas Calibradas
  • Piedras preciosas por pieza
  • Gemas de grado superior
  • Pares Emparejados
  • Gemas Corte Cabujón
  • Drilled Gems, Briolettes and Beads
  • Piedras zodiacales
  • Las Tallas de Piedras Preciosas
  • Gemas elegantes
  • Gemas de estrella
  • Zafiro sin Calefacción
Servicio al cliente sólo en inglés

Número gratuito - EE. UU. & Canadá únicamente:
1-800-464-1640

Internacional:
+66-39303404

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Tamaño y 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