search
  • Sign In
    Sign Up
  • English speaking customer support only

    Toll Free - USA & Canada only:
    1-800-464-1640

    International:
    +66-39303404

  • Change Language
  • USD

Buy Quartz Gems

(218)
Gem Type Weight Size Clarity Price Origin
Clear Colors
More
Single
Pairs
Lots
Faceted
Cabochons
Sort By:
Clear All
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Medium Yellow Quartz Gem - 7.5ct Octagon Step Cut (ID: 491111)

Octagon / Emerald Cut Yellow Quartz

7.5ct
16.1 x 8.2 mm
$ 7.48
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Medium Yellow Quartz Gem - 6.2ct Asscher Cut (ID: 394878)

Octagon / Emerald Cut Yellow Quartz

6.2ct
11.2 x 11.2 mm
$ 31.00
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Medium Yellow Quartz Gem - 7.7ct Octagon Step Cut (ID: 491023)

Octagon / Emerald Cut Yellow Quartz

7.7ct
12.9 x 9.3 mm
$ 7.70
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Light Yellow Quartz Gem - 7.6ct Octagon Step Cut (ID: 491017)

Octagon / Emerald Cut Yellow Quartz

7.6ct
16.3 x 8.1 mm
$ 7.61
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Warm Yellow Quartz Gem - 5.3ct Asscher Cut (ID: 394816)

Octagon / Emerald Cut Yellow Quartz

5.3ct
10.4 x 10.3 mm
$ 26.55
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Medium Yellow Quartz Gem - 22ct Octagon / Scissor Cut (ID: 399296)

Octagon / Emerald Cut Yellow Quartz

22ct
20.8 x 13.7 mm
$ 35.04
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Mellow Yellow Quartz Gem - 5.2ct Octagon / Scissor Cut (ID: 404729)

Octagon / Emerald Cut Yellow Quartz

5.2ct
10.6 x 10.6 mm
$ 9.69
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Laguna Yellow Quartz Gem - 10.3ct Asscher Cut (ID: 394982)

Octagon / Emerald Cut Yellow Quartz

10.3ct
13.7 x 13.5 mm
$ 51.45
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Medium Yellow Quartz Gem - 7.3ct Octagon Step Cut (ID: 491109)

Octagon / Emerald Cut Yellow Quartz

7.3ct
14.5 x 8.5 mm
$ 7.34
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Pineapple Yellow Quartz Gem - 8.9ct Octagon / Scissor Cut (ID: 400751)

Octagon / Emerald Cut Yellow Quartz

8.9ct
12.3 x 12.2 mm
$ 44.99
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Earthy Yellow Quartz Gem - 7.4ct Octagon Step Cut (ID: 491102)

Octagon / Emerald Cut Yellow Quartz

7.4ct
13.6 x 8.5 mm
$ 7.37
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Light Pineapple Yellow Quartz Gem - 12ct Asscher Cut (ID: 394973)

Octagon / Emerald Cut Yellow Quartz

12ct
14.6 x 14.5 mm
$ 60.05
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Medium Yellow Quartz Gem - 7.8ct Octagon Step Cut (ID: 472972)

Octagon / Emerald Cut Yellow Quartz

7.8ct
16.8 x 8.9 mm
$ 15.66
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Pale Yellow Quartz Gem - 3.9ct Asscher Cut (ID: 394657)

Octagon / Emerald Cut Yellow Quartz

3.9ct
9.3 x 9.3 mm
$ 19.70
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Light Yellow Quartz Gem - 6.8ct Asscher Cut (ID: 395012)

Octagon / Emerald Cut Yellow Quartz

6.8ct
12.2 x 12.1 mm
$ 34.05
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Laguna Yellow Quartz Gem - 10.4ct Asscher Cut (ID: 395011)

Octagon / Emerald Cut Yellow Quartz

10.4ct
13.6 x 13.5 mm
$ 51.80
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Light Yellow Quartz Gem - 9.1ct Octagon Step Cut (ID: 473009)

Octagon / Emerald Cut Yellow Quartz

9.1ct
12.9 x 10.3 mm
$ 18.12
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Pale Yellow Quartz Gem - 4.8ct Asscher Cut (ID: 394658)

Octagon / Emerald Cut Yellow Quartz

4.8ct
10.7 x 10.4 mm
$ 23.75
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Pale Yellow Quartz Gem - 13.3ct Asscher Cut (ID: 394639)

Octagon / Emerald Cut Yellow Quartz

13.3ct
14.5 x 14.3 mm
$ 66.70
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Bumblebee Yellow Quartz Gem - 29.5ct Octagon / Scissor Cut (ID: 518738)

Octagon / Emerald Cut Yellow Quartz

29.5ct
21.7 x 14.9 mm
$ 72.23
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Pale Yellow Quartz Gem - 13.4ct Asscher Cut (ID: 394648)

Octagon / Emerald Cut Yellow Quartz

13.4ct
14.5 x 14.4 mm
$ 66.85
Item in Stock
1 2 3 4 5 6 7 8 9 10
Quartz

Quartz Gemstone Information - History, and Introduction

Quartz is one of the essential minerals on earth and makes up one of the most popular gemstone groups in the world of colored stones. It is the second most abundant mineral found in Earth's continental crust, second only to the feldspars. The name 'quartz' is thought to come from the German word 'quarz,' which likely originated from the Slavic and Polish words meaning 'hard.' The name is descriptive regarding quartz being the definitive mineral that measures 7 on the Mohs scale of hardness. Other gemstones are often compared to quartz when it comes to classifying them as being hard, soft or durable.

Quartz gemstones are beautiful, durable and hard. Also in most cases, quartz is relatively inexpensive and available in enormous sizes. Some quartz varieties can be scarce, while others are very readily available. Quartz is an extremely versatile material that can be cut and carved into many shapes and sizes. For centuries quartz has been used in the creation of jewelry and ornamental objects. Today, quartz is not only one of the essential gemstones in the colored stone trade, but it also has many important industrial usages.

Quartz Gemstone Color

The color of macrocrystalline quartz is as variable as the spectrum, but clear quartz is by far the most common color followed by white or cloudy quartz. Purple (amethyst), pink (rose quartz), gray or brown to black (smoky quartz) are also typical. Cryptocrystalline quartz varieties can be multicolored. In artificial light, quartz does not display a desirable quality. It looks best in daylight, particularly after sunrise and just before sunset. The deep colors are the most valuable.

Quartz Gemstone Clarity and Luster

High-quality quartz is transparent, which means that the light passes through the stone unhindered. In translucent quartz, the passage of light through the gemstone becomes weakened by the gem material. The best quality quartz is 'clean,' free from inclusions of any kind. Since quartz is plentiful, there is little reason to go for stones with visible inclusions, except those that define the character of the gemstone (e.g., cat's eye, hawk's eye or scenic stones). Luster is glassy to vitreous as crystals, while cryptocrystalline forms are usually waxy to dull, but can be vitreous. Crystals are transparent to translucent; cryptocrystalline forms are generally translucent or opaque.

Quartz Gemstone Cut and Shape

Due to the roughness of the color distribution in the crystals, quartz is often cut as brilliant rounds to maximize their color. Other cuts are ideal when the color is better distributed. Quartz is available in a wide range of calibrated sizes and shapes, including many fancy shapes.

Quartz Gemstone Treatment

Colorless quartz is always untreated. Colored stones can occasionally be enhanced by dyes (as in the case of agate), irradiation (bombardment with low-level radioactivity), or heating. Some gemstones may also be impregnated or coated with wax, clear resin and even foil for enhanced color, luster, and stability. Synthetic quartz is also abundant. Naturally colored quartz typically exhibits color zoning.

Quartz Gemstone and Jewelry Design Ideas

Quartz is the ideal jewelry gemstone. It is readily available and relatively affordable. Even large stones can be bought at great prices. Quartz is also one of the few colored stones that you'll find in almost every jewelry retail store. Amethyst and citrine are official birthstones and are often used in birthstone jewelry. Since most quartz is untreated, there are many astrological uses for different types of quartz gemstones (carnelian for example), so you can find many planetary jewelry designs featuring quartz. Quartz is also often used for the making of fine timepieces, including bezels and moving components.

Quartz is durable enough for wearing in everyday quartz gemstone rings, and it is also ideal for any other jewelry application available. Men or women can wear quartz gemstones as they can be found in just about any color imaginable. You can find quartz in any style of cut and shape, from cabochons to faceted stones, as well as tumbled and drilled beads. Quartz is also often carved into interesting ornamental designs, such as paperweights, animal carvings or as seals, intaglios and insignias.

Certified Customer Reviews
Overall Rating -> 9 star ratings
i saw a program on the science channel about varieties of fluorite - a special on John 'something' from perhaps wales and varieties of colors... and i was chatting w/ friend who sent me link to your site
Posted By DrLaura in December, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
Well I was looking for the perfect stone to set in a ring for my partner. I found this Garnet on a website called Gemselect and it captured my eye. I had to have it for her. It looked as perfect as she does. I got the stone I wanted for $150 shipped straight to me. It’ll be the perfect Christmas present
Posted By Willy Wonka in December, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Always enjoy browsing the website. It's super easy to use and very informative. Second order I have placed and will buy again in the future.
Posted By Negem in December, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
GemSelect has a wonderful well described selection that surprises me how quickly it ships.
Posted By Tim in December, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
They have the best selection of different gems and the prices and fantastic
Posted By Brandi in December, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
Very clear site. The photos and video make sure you know exactly what you are getting. I also appreciate all of the additional info. and definitions/explanations offered
Posted By NuthinClever in December, 2019
Source: Bizrate
Sign up for our Newsletter
More Shapes
  • Asscher Cut
  • Baguette / Scissor Cut
  • Baguette Cabochon
  • Baguette Checkerboard
  • Baguette Crystal Cluster
  • Baguette Facet
  • Baguette Rose-Cut
  • Baguette Step Cut
  • Baguette Sugarloaf Cabochon
  • Baroque
  • Barrel
  • Barrel / Checkerboard
  • Barrel / Full-Round
  • Barrel / Scissor Cut
  • Barrel Cabochon
  • Barrel Rose Cut
  • Bear Carving with Hole
  • Bird Carving
  • Briolette with Hole
  • Carved Baguette
  • Carved Cameo
  • Carved Cushion
  • Carved Elephant
  • Carved Fancy
  • Carved Fish
  • Carved Fish with Hole
  • Carved Flower
  • Carved Fruit
  • Carved Half Heart
  • Carved Half Moon
  • Carved Heart
  • Carved Heart Cabochon
  • Carved Leaf
  • Carved Marquise
  • Carved Marquise Cabochon
  • Carved Octagon
  • Carved Oval
  • Carved Oval Cabochon
  • Carved Owl
  • Carved Pear
  • Carved Pear Cabochon
  • Carved Rhomb
  • Carved Rose
  • Carved Rose with Half Drilled Hole
  • Carved Round
  • Carved Round Cabochon
  • Carved Sheep
  • Carved Shell
  • Carved Square
  • Carved Teardrop
  • Carved Trillion
  • Carved Turtle
  • Cushion Buff-Top
  • Cushion Cabochon
  • Cushion Carved Medusa Cameo
  • Cushion Checkerboard
  • Cushion Checkerboard (double sided)
  • Cushion Concave Cut
  • Cushion Concave Fantasy Cut
  • Cushion Crystal Cluster
  • Cushion Mixed Cut
  • Cushion Rose-Cut
  • Cushion Shape Sugarloaf Cabochon
  • Cushion Sugarloaf Cabochon
  • Cushion-Cut
  • Diamond-Cut
  • Drilled Faceted Sphere
  • Drilled Sphere
  • Drilled Square Rondelle Slice
  • Drop / Pear
  • Fancy Cabochon
  • Fancy Carved Cushion
  • Fancy Carved Oval
  • Fancy Carved Pear
  • Fancy Carved Round
  • Fancy Carved Trillion
  • Fancy Carving
  • Fancy Crystal Cluster
  • Fancy Facet
  • Fancy Fantasy Carved Leaf
  • Fancy Fantasy Carving
  • Fancy Slice
  • Fancy Star Facet
  • Fancy-Cut
  • Fantasy Carved Flower
  • Fantasy Carved Flower Cut
  • Fantasy Carved Leaf
  • Flower Carving
  • Flower-Cut
  • Half Heart Cabochon
  • Half Heart Facet
  • Half Moon Cabochon
  • Half Moon Facet-Cut
  • Half Moon Faceted
  • Half-Drilled Briolette
  • Half-Drilled Heart Checkerboard Facet
  • Half-Drilled Sphere
  • Heart Cabochon
  • Heart Checkerboard (double sided)
  • Heart Facet
  • Heart Rose-Cut
  • Hexagon Cut
  • Marquise Buff-Top
  • Marquise Cabochon
  • Marquise Checkerboard
  • Marquise Checkerboard (double sided)
  • Marquise Facet
  • Marquise Mixed Cut
  • Marquise Slice
  • Marquise Sugarloaf Cabochon
  • Octagon / Scissor Cut
  • Octagon Cabochon
  • Octagon Checkerboard
  • Octagon Facet
  • Octagon Step Cut
  • Oval Buff-Top
  • Oval Cabochon
  • Oval Cabochon with Hole
  • Oval Carved Cameo
  • Oval Checkerboard
  • Oval Checkerboard (double sided)
  • Oval Concave Cut
  • Oval Crystal Cluster
  • Oval Diamond-Cut
  • Oval Facet
  • Oval Fancy Facet
  • Oval Fantasy Concave Cut
  • Oval Mixed Cut
  • Oval Portuguese-Cut
  • Oval Rose-Cut
  • Oval Slice
  • Pear Cabochon
  • Pear Checkerboard
  • Pear Checkerboard with Hole
  • Pear Concave Cut
  • Pear Concave Fantasy Cut
  • Pear Crystal Cluster
  • Pear Double-Sided Checkerboard
  • Pear Facet
  • Pear Shape Sugarloaf Cabochon
  • Pear Slice
  • Pencil
  • Pencil Cut
  • Pentagon Facet
  • Princess-Cut
  • Rhomb Cabochon
  • Rhomb Checkerboard
  • Rhomb Checkerboard (Double-Sided)
  • Rhomb Facet
  • Rondelle
  • Round Buff-Top
  • Round Cabochon
  • Round Carved Cameo
  • Round Checkerboard
  • Round Checkerboard (double sided)
  • Round Concave Cut
  • Round Concave Fantasy Cut
  • Round Drilled Checkerboard (Double Sided)
  • Round Drilled Rondelle
  • Round Facet
  • Round Mixed Cut
  • Round Mixed-Cut
  • Round Petal Cut
  • Round Portuguese-Cut
  • Round Rose-Cut
  • Round Rose-Cut (double sided)
  • Round Slice
  • Shark Fin Cabochon
  • Shield Cabochon
  • Shield Checkboard
  • Spherical
  • Square / Scissor Cut
  • Square Cabochon
  • Square Facet
  • Square Rose-Cut
  • Square Step-Cut
  • Square Sugarloaf Cabochon
  • Square with Hole
  • Tapered Baguette
  • Tapered Baguette Cabochon
  • Teardrop Cabochon
  • Trapezoid
  • Trapezoid Cabochon
  • Trapezoid Checkerboard
  • Triangle
  • Triangle Cabochon
  • Trillion Cabochon
  • Trillion Checkerboard
  • Trillion Concave Cut
  • Trillion Concave Fantasy Cut
  • Trillion Crystal Cluster
  • Trillion Facet
  • Trillion Rose-Cut
  • Trillion Shape Sugarloaf Cabochon
  • Undrilled Briolette Teardrop
Popular Gemstones
  • Sapphire
  • Emerald
  • Ruby
  • Aquamarine
  • Zircon
  • Opal
  • Topaz
  • Tourmaline
  • Garnet
  • Amethyst
  • Citrine
  • Tanzanite
All Gemstones (144)
A B C D E F G H I J K L M N O P Q R S T V Z
  • Actinolite Cat's Eye
  • Agate
  • Agate Geode
  • Almandine Garnet
  • Amazonite
  • Amethyst
  • Ametrine
  • Ammolite
  • Andalusite
  • Andesine Labradorite
  • Apatite
  • Aquamarine
  • Aventurine
  • Beryl
  • Black Opal
  • Bloodstone
  • Boulder Opal
  • Calcite
  • Carnelian
  • Cat's Eye Apatite
  • Cat's Eye Aquamarine
  • Cat's Eye Augite
  • Cat's Eye Gemstones
  • Cat's Eye Moonstone
  • Cat's Eye Opal
  • Cat's Eye Scapolite
  • Chalcedony
  • Charoite
  • Chocolate Opal
  • Chrome Diopside
  • Chrome Tourmaline
  • Chrysoberyl
  • Chrysocolla
  • Chrysoprase
  • Citrine
  • Color-Change Diaspore
  • Color-Change Fluorite
  • Color-Change Garnet
  • Color-Change Sapphire
  • Coral
  • Demantoid Garnet
  • Dendritic Agate
  • Diamond
  • Druzy Amethyst
  • Druzy Azurite
  • Emerald
  • Enstatite
  • Fire Agate
  • Fire Opal
  • Fluorite
  • Fossil Coral
  • Garnet
  • Golden Beryl
  • Grandidierite
  • Grossularite Garnet
  • Hawk's Eye
  • Hematite
  • Hemimorphite Druzy
  • Hessonite Garnet
  • Hiddenite
  • Howlite
  • Idocrase
  • Imperial Topaz
  • Iolite
  • Jade Gemstones
  • Jadeite
  • Jasper
  • Kornerupine
  • Kunzite
  • Kyanite
  • Labradorite
  • Lapis Lazuli
  • Larimar
  • Malachite
  • Malaya Garnet
  • Mali Garnet
  • Maw-Sit-Sit
  • Moonstone
  • Morganite
  • Moss Opal
  • Mother of Pearl
  • Mystic Quartz
  • Mystic Topaz
  • Nuummite
  • Obsidian
  • Opal
  • Opal Doublet
  • Opal in Matrix
  • Pearl
  • Peridot
  • Pietersite
  • Prehnite
  • Pyrite
  • Pyrope Garnet
  • Quartz
  • Quartz Cat's Eye
  • Quartz With Marcasite
  • Rainbow Moonstone
  • Rainbow Pyrite
  • Rhodochrosite
  • Rhodolite Garnet
  • Rhodonite
  • Rose Quartz
  • Rubellite Tourmaline
  • Ruby
  • Ruby in Fuchsite
  • Ruby-Zoisite
  • Rutile Quartz
  • Sapphire
  • Scolecite
  • Seraphinite
  • Serpentine
  • Sillimanite
  • Sillimanite Cat's Eye
  • Smithsonite
  • Smoky Quartz
  • Snowflake Obsidian
  • Sodalite
  • Spectrolite
  • Spessartite Garnet
  • Sphalerite
  • Sphene
  • Spinel
  • Star Diopside
  • Star Garnet
  • Star Gemstones
  • Star Lemon Quartz
  • Star Moonstone
  • Star Rose Quartz
  • Star Ruby
  • Star Sapphire
  • Star Sunstone
  • Strawberry Quartz
  • Sugilite
  • Sunstone
  • Tanzanite
  • Tiger's Eye
  • Tiger's Eye Matrix
  • Topaz
  • Tourmaline
  • Tsavorite Garnet
  • Turquoise
  • Variscite
  • Zircon
Main Categories
  • New Arrivals
  • Gemstone Lots
  • Calibrated Gemstones
  • Gemstones By Piece
  • Top Grade Gems
  • Matching Pairs
  • Cabochon Gemstones
  • Drilled Gems, Briolettes and Beads
  • Birthstones
  • Gemstone Carvings
  • Fancy Gemstones
  • Star Gemstones
  • Unheated Sapphire
English speaking customer support only

Toll Free - USA & Canada only:
1-800-464-1640

International:
+66-39303404

Save Money
No shipping Fees for Additional Items!
$8.90 Worldwide Shipping

Update Translation
 
Current Value
New Value
GemSelect Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
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