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Gems by Country
  • Afghanistan Emeralds
    Buy Afghanistan emerald gemstones: Precious green emeralds, huge selection of shapes, cuts and sizes; cabochons, calibrated gems, matched pairs and lots.
  • Afghanistan Gemstones
    Buy Afghanistan gemstones, fine quality Afghani origin colored stones; lapis lazuli, morganite, kunzite, turquoise, serpentine and more; calibrated sizes and shapes at GemSelect
  • African Gemstones
    Buy African gems at wholesale prices from GemSelect, including tsavorite garnet, tourmaline, tanzanite, Mozambique ruby, aquamarine, Ethiopian opal, Zambian emerald and more
  • African Ruby Gemstones
    Africa Gems are some of the most sought-after in the world. Rubies are sourced from many gem-rich African sources including Madagascar, Sri Lanka, Tanzania & Mozambique - GemSelect
  • American USA Gems
    Buy fine natural loose semi-precious gemstones from the United States, USA. Many fine gems are sourced from the US including American sunstone, Jasper, Howlite, Turquoise and more.
  • Ametrine from Bolivia
    Buy natural and untreated Ametrine from Bolivia. Bolivian ametrine is considered the finest bi-color quartz available Shop for citrine and amethyst in a single gemstone at GemSelect.
  • Australian Opal Gems
    Australian opals, black opal, boulder opal, crystal opal, white opal and opal doublets in calibrated sizes, colors and shapes, fine precious colored opal from Australia
  • Australian Sapphires
    Natural Australian sapphire gemstones, choose from a huge selection of sapphire gemstones in many colors, cuts, sizes and shapes, also calibrated sizes, matching pairs and lots
  • Brazilian Amethysts
    Brazilian Amethyst Gemstones, Purple-Violet Amethyst Stones from Brazil available in a large selection of shapes, cuts and sizes, including calibrated gems, matching pairs, lots and cabochons
  • Brazilian Citrine Gems
    Brazilian citrine gemstones, golden citrine quartz stones from Brazil, shop from a huge selection of shapes, cuts and sizes, including cabochons, calibrated sizes, matching pairs and lots
  • Brazilian Quartz Gems
    Brazilian quartz gemstones, quartz stones from Brazil, buy from a large selection of shapes, colors, cuts and sizes, including many calibrated gems, matching pairs and matching gem lots
  • Brazilian Topaz Gems
    Brazilian topaz gemstones, topaz stones from Brazil, shop from a huge selection of shapes, colors, cuts and sizes, including calibrated sizes, matching pairs, lots, cabochons and rare imperial topaz
  • Burma Ruby
    Burma or Myanmar is one of the finest red ruby sources, particularly Mogok, browse loose Burma rubies online at GemSelect
  • Burma Spinel
    Burma or Myanmar is a traditional source for the finest spinel, browse Burmese spinel online from a wide range of gems at GemSelect
  • Burmese Gemstones
    Buy loose colored gemstones from Burma from a wide range of stones including spinel, ruby, jadeite, peridot and zircon
  • Cambodia Gemstones
    Buy fine Cambodian gemstones including sapphire, spinel, ruby, blue zircon, garnet and more, choose from the largest selection of calibrated sizes, shapes and gem types
  • Ceylon Sapphire
    Ceylon sapphire is famous for its brilliance and fire, some of the finest cornflower blue sapphire comes from Sri Lanka. Buy fine sapphire online at GemSelect
  • Ethiopian Opal Gems
    Ethiopian Opal Gemstones: Precious Opal Gems from Ethiopia. Huge Selection of Shapes, Cuts and Sizes, Including Black and Chocolate Opal in Calibrated Sizes, Matching Pairs and Lots.
  • Indonesian Gemstones
    Indonesian Gemstones are plentiful and are often very exotic, just as the origin itself. Indonesian gems include many varieties of jasper, coral and even volcanic glass known as obsidian.
  • India Gemstones
    India Gemstones: Fine Indian Origin Colored Stones including Aquamarine, Garnet, Rutile Quartz Stones and More. Largest Selection of Calibrated Sizes, Shapes and Gem Types Available.
  • Madagascar Gemstones
    Madagascar has some of the richest gemstone resources in the world, including fine sources for ruby, sapphire, citrine, tourmaline, garnet and apatite. Buy natural gems from Madagascar at GemSelect.
  • Ruby Gems from Madagascar
    Buy Natural Ruby Gems from Madagascar: Loose red ruby gemstones available in all shapes and sizes, including matching pairs and gem lots - Buy loose gems online at GemSelect.
  • Madagascar Sapphires
    Buy Madagascar Sapphires: Natural loose sapphire gemstones from Madagascar in all shapes, sizes and colors, including matching pairs and gem lots at wholesale prices from GemSelect.
  • Mogok Burma Ruby
    Buy Natural Mogok Burma Ruby Gems: Red Burma ruby is considered the finest in the world, particularly ruby from Mogok Myanmar, famed top grade pigeon-blood color.
  • Mozambique Gemstones
    Mozambique Gemstones: Mozambique Origin Gems including Tourmaline, Aquamarine, Garnet and More. Largest Selection of Calibrated Sizes, Shapes, Colors and Gems Available.
  • Nigerian Tourmaline
    Nigeria is an important source of some of the finest tourmaline. Buy Nigerian tourmaline online at GemSelect.
  • Peruvian Gemstones
    Buy Peruvian colored gemstones including opal and chrysocolla, and more, choose from the largest selection of calibrated sizes, shapes and gem types at GemSelect
  • Songea Sapphire
    The Songea region of Tanzania is an important source for fine sapphire. Buy Songea sapphire online at GemSelect.
  • Tanzanian Sapphire Gems
    Buy Tanzanian Sapphire Gemstones: Huge Selection of Natural Loose Sapphire Gems in Assorted Shapes, Colors and Calibrated Sizes. Including Faceted Cuts and Cabochons from GemSelect
  • Tanzanian Spinel Gems
    Buy Tanzanian Spinel Gemstones: Huge Selection of Natural Loose Spinel Gems in Assorted Shapes, Colors and Calibrated Sizes. Including Faceted Cuts and Cabochons from GemSelect
  • Gemstones from Thailand
    Buy Thailand Gemstones: Fine Thai Origin Gems including Star Sapphire, Tiger's Eye Stone and More. Largest Selection of calibrated sizes, shapes and colors at GemSelect.
  • Thai Sapphire Gems
    By Natural Loose Sapphires from Thailand: Including black star sapphire, blue sapphire, green sapphire and golden yellow Mekhong sapphire. Thai sapphire is renowned for color and quality.
  • Zambian Emerald Gems
    Buy Zambian Emerald gems online at GemSelect. Along with Colombia, Zambia is one of the most important sources for high quality emerald. Zambian emerald is one of the newest emeralds to storm the markets.
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Size and Weight

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