Skip to content
Columbia Gem House Columbia Gem House
Account
Search
Loading...
Cart
  • Home
  • Gemstones
    • Faceted
    • Cabochons
    • Melee
    • Slices
    • Crystals
    • Pairs and Suites
    • Carvings
    • Parcels and Lots
    • Featured
      • American Gems
      • Montana Sapphires
      • Objet D' Art
  • Jewelry
    • Rings
    • Earrings
    • Necklaces
    • Pendants
    • Bracelets
    • Suites
    • Collections
      • Ready to Ship
    • Programs
  • Pearls
    • Cortez Pearls
      • Loose
      • Learn More About Cortez Pearls
    • Cultured Pearls
      • Loose
  • Beads
    • Beads
  • Services
    • Cutting
    • Consulting
    • Speaking Engagements
    • Wholesale Accounts
  • Fair Trade Gems
    • Principles
    • Protocols
    • Get Involved
  • Resources
    • Fair Trade Blog
    • Gem Education
      • Gem Facts
      • Travel the World of Gems
      • Gemstone Spotlight
      • Gemstone Glossary
      • How Gemstones are Cut
      • Gem Care & Cleaning
    • Jewelry Education
      • Step by Step
      • Designer Profile
      • Settings Glossary
      • Care and Cleaning
  • About Us
  • Account
  • Home
  • / Gemstones
  • / Stone Size: 4.5mm

Gemstones

Filter
  • Stone Size: 4.5mm remove
Gem Type
  • Apatite
  • Garnet
  • Opal
  • Sapphire
  • Spinel
  • Topaz
  • Tourmaline
Variety
  • Anthill Garnet
  • Apatite
  • Australian Sapphire
  • Black Spinel
  • Garnet
  • Imperial Topaz
  • Malawi Sapphire
  • Mexican Fire Opal
  • Montana Sapphire
  • Padparadsha Sapphire
  • Pink Tourmaline
  • Royal Kings Plain Sapphire
Shape
  • Cushion
  • GeoCuts
  • Hexagonal
  • Round
  • Trillion
Sub Shape
  • Checkerboard
  • Rose
Fair Trade Level
  • 1
  • 2
  • 3
  • 4
Origin
  • Africa
  • Australia
  • Madagascar
  • Malawi
  • Mexico
  • USA
Location
  • Arizona
  • Australia
  • Chimwadzulu
  • Malawi
  • Montana
  • Nigeria
Color
  • Black
  • Blue
  • Blue/Green
  • Golden
  • Green
  • Multi
  • Pink
  • Red
  • Red/Orange
  • Yellow
Treatment
  • Heat Only
  • Heat-Only
  • Natural
  • Not Treated
Gem Cut
  • Bead
  • Faceted
Stone Size
  • 4.5mm remove
Total Gem Weight
  • 0.12 cw
  • 0.13 cw
  • 0.16 cw
  • 0.21 cw
  • 0.26 cw
  • 0.27 cw
  • 0.3 cw
  • 0.31 cw
  • 0.32 cw
  • 0.33 cw
  • 0.34 cw
  • 0.35 cw
  • 0.36 cw
  • 0.38 cw
  • 0.41 cw
  • 0.42 cw
  • 0.43 cw
  • 0.44 cw
  • 0.45 cw
  • 0.47 cw
  • 0.48 cw
  • 0.49 cw
  • 0.5 cw
  • 0.51 cw
  • 0.54 cw
  • 0.55 cw
  • 0.56 cw
  • 0.59 cw
  • 0.6 cw
  • 0.65 cw
  • 0.66 cw
  • 0.69 cw
  • 0.83 cw
  • 0.84 cw
  • 0.91 cw
  • 0.93 cw
  • 0.94 cw
  • 0.96 cw
  • 1.01 cw
  • 1.05 cw
  • 1.07 cw
  • 1.11 cw
  • 1.22 cw
  • 1.28 cw
  • 1.42 cw
  • 1.47 cw
  • 1.59 cw
  • 1.82 cw
  • 1.91 cw
  • 1.93 cw
  • 2.06 cw
  • 3.17 cw
  • 4.25 cw
  • Varies By Size
  • Varies By Stone
4mm to 5.5mm Light Green Montana Sapphire Rounds
From $279.00
4.5mm to 7mm Blue/Green Apatite Trillions
From $87.00
4.5mm to 7mm Blue Apatite Trillions
From $87.00
3 to 5mm Blue/Green Apatite Hexagons
From $54.00
2.5mm to 7mm Black Spinel Faceted Round Beads
From $27.00
4 to 10mm Black Spinel Rounds
From $28.50
3 to 5mm Blue Apatite Hexagons
From $54.00
4 to 5mm Golden Imperial Topaz Rounds
From $195.00
5mm Hexagonal Cut Pink Tourmaline
3.5 to 5mm Pink Tourmaline Hexagon
From $120.00
5mm Natural Round Grossular Garnet
4 to 6mm Grossular Garnet Rounds
From $90.00
6mm Checkerboard Cushion Cut AAA Pink Tourmaline
4.5 to 6mm AAA Pink Tourmaline Checkerboard Cushions
From $540.00
4mm Round Apatite
4 to 6mm Apatite Rounds
From $45.00
6mm Round Red/Orange Mexican Fire Opal
4 to 9mm Red/Orange Mexican Fire Opal Rounds
From $48.00
4.5mm Round Rose Cut Montana Sapphires
Sold Out
4.5mm Montana Sapphire Rose Cut Rounds
$423.00
4.5mm Round Rose Cut Yellow Malawi Sapphire
4.5mm Round Rose Cut Yellow Malawi Sapphire
$177.00
4.5mm Round Light Blue Australian Sapphires
4.5mm Round Light Blue Australian Sapphires
$258.00
4.5mm Round Royal Kings Plain® Australian Green Sapphires
4.5mm Round Royal Kings Plain® Australian Green Sapphires
$322.50
6mm to 9mm Round Red Anthill Garnet
4 to 9mm Red Anthill Garnet Rounds
From $60.00
4.5mm Trillion Cut Malawi Padparadascha Sapphire
4.5mm Trillion Cut Malawi Padparadscha Sapphire
$615.00
4.5mm Geocut Pink Montana Sapphire
Sold Out
4.5mm Pink Montana Sapphire GeoCut™
$864.00
6mm Trillion Anthill Garnet
4 to 6mm Anthill Garnet Trillions
From $41.25

1-800-888-2444

Company

  • About Us
  • Blog
  • Contact

Customer Care

  • Shipping
  • Returns
  • Wholesale Accounts
  • Terms & Conditions
  • Privacy

Connect

Stay in the know!

Copyright © 2023 Columbia Gem House, Inc..
American Express Apple Pay Diners Club Discover Meta Pay Google Pay Mastercard PayPal Shop Pay Venmo Visa