RUBY
the red variety of corundum

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VARIETY INFORMATION:

  • VARIETY OF: Corundum , Al2O3 .
  • USES: Gemstone.
  • BIRTHSTONE FOR: July
  • COLOR: various shades of red.
  • INDEX OF REFRACTION: 1.76 - 1.78
  • BIREFRINGENCE: 0.009
  • HARDNESS: 9
  • CLEAVAGE: none, although there is a rhombic parting
  • CRYSTAL SYSTEM: trigonal
  • PLEOCHROIC: strongly
  • For natural ruby mineral specimens see our For Sale or Sold lists
    For Ruby Jewelry, see --> RUBY JEWELRY

Ruby is the red variety of corundum, the second hardest natural mineral known to antiquity. The non-red variety of corundum is Sapphire. Sapphires are well known among the general public as being blue, but can be nearly any color. The red color in ruby is caused by trace amounts of the element chromium. The best shade of red for ruby is often given the name "pigeon blood red", but ruby can be any shade of red up to almost pink.

Oriented rutile crystal inclusions cause a six-rayed-star light effect (called asterism) to form the popular Star Ruby.

Rubies come from all over the world but good gemstones are found at Thailand, India, Madagascar, Zimbabwe, North Carolina in the U.S., Afghanistan, Pakistan, Sri Lanka, Kenya, Tanzania, Kampuchea, and perhaps most notably, Burma.

Rubies have a famous place in science - the first lasers were made from artificial ruby crystals.  They still are used for this purpose although other materials offer improved efficiency.  Some ruby crystals show the fluorescence (actually very short term phosphorescence) that makes a laser possible.

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Ruby Jewelry - Hover over an item for more information
Lover's Knot Ring Sterling Silver Ring with Sapphire & Ruby
Two knots intertwine in an unending braid that symbolizes the love that ties you together. Two gems, two people, forever. Add your birthstones for extra significance.Only $227.00 at Gemvara
no photoLover's Knot Ring Sterling Silver Ring with Sapphire & Ruby
$227.00
Gemvara
14K Ladies Precious Rings
14K Ladies Precious Rings. Available in white and yellow gold in emeral, ruby or sapphire precious stones. 10 points total diamond weight.Only $210.00 at valeriestreasuresonline
no photo14K Ladies Precious Rings
$210.00
valeriestreasuresonline
Lab-Created Ruby/Sapphire Band Sterling at JCPenney
appraised at learn more about appraisals Dazzling with sparkling personality, this sterling silver ring boasts lab-created rubies and lab-created sapphires in a sophisticated design. Metal: Sterling silver Metal Color: White Stone: 1.9 ctw. lab-created...Only $100.00 at jcpenney
no photoLab-Created Ruby/Sapphire Band Sterling at JCPenney
$100.00
jcpenney
Round Ruby and Diamond Seven Stone Ring
Round Ruby and Diamond Seven Stone RingOnly $629.99 at Angara.com
no photoRound Ruby and Diamond Seven Stone Ring
$629.99
Angara.com
Lab-Created Ruby Ring Rose Gold over Sterling at JCPenney
appraised at learn more about appraisals Bold and breathtaking! The focal point of this captivating ring is an impressive 16x12mm lab-created ruby, a fiery stone that demands to be noticed. With its vibrant red hue, sophisticated styling and warm 10K...Only $100.00 at jcpenney
no photoLab-Created Ruby Ring Rose Gold over Sterling at JCPenney
$100.00
jcpenney
Lab-Created Ruby Earrings 14K-over-Sterling at JCPenney
appraised at learn more about appraisals Feel the rush of color. Breathtaking drop earrings glitter with lab-created rubies and diamond-accents. Set in two-tone 14K gold over sterling silver for added drama. Metal: 14K gold over sterling silver Metal...Only $100.00 at jcpenney
no photoLab-Created Ruby Earrings 14K-over-Sterling at JCPenney
$100.00
jcpenney
Lover's Knot Ring Sterling Silver Ring with Ruby & Smoky Quartz
Two knots intertwine in an unending braid that symbolizes the love that ties you together. Two gems, two people, forever. Add your birthstones for extra significance.Only $211.00 at Gemvara
no photoLover's Knot Ring Sterling Silver Ring with Ruby & Smoky Quartz
$211.00
Gemvara
Cupid's Arrow Diamond & Ruby Pendant
It will be love at first sight with this charming 24kt gold-plated sterling silver pendant, adorned with nearly a carat of rubies and stylishly accented with diamonds.Pendant is 1/2" in length, chain is 18".Only $225.00 at Danbury Mint
no photoCupid's Arrow Diamond & Ruby Pendant
$225.00
Danbury Mint
Written in the Stars Ring Round Green Tourmaline Sterling Silver Ring with Ruby
Two glittering gemstones and numerous star etchings rest atop the hollowed upper band of this gleaming ring, designed for the stargazers among us.Only $168.00 at Gemvara
no photoWritten in the Stars Ring Round Green Tourmaline Sterling Silver Ring with Ruby
$168.00
Gemvara
Fizzy Stack Ring Sterling Silver Ring with Green Tourmaline & Ruby
Sparkling gemstones and bubbly discs punctuate this irresistible stackable ring that you'll want to wear with all of the other rings you own.Only $272.00 at Gemvara
no photoFizzy Stack Ring Sterling Silver Ring with Green Tourmaline & Ruby
$272.00
Gemvara
Ross-Simons .40ct t.w. Ruby, .15ct t.w. Diamond Ring In14kt White Gold. Size 7
With three sparkling rows, this .40 ct. t.w.ruby and .15 ct. t.w. diamond ring creates a piece that's an absolute delight! Wear it on its own or stack it with other rings for a glamorous effect. We love the modern, wider-styled band. 14kt white gold...Only $671.25 at Ross-Simons
no photoRoss-Simons .40ct t.w. Ruby, .15ct t.w. Diamond Ring In14kt White Gold. Size 7
$671.25
Ross-Simons
Genuine Ruby & Diamond Ring 10K Gold at JCPenney
A radiant ruby center stone is flanked by shining diamond accents in this exquisite ring. Metal: 10K gold Metal Color: Yellow Stones: .618 ct. ruby Other Stones: Diamond accents Setting: Prong Sizes: 5-9, whole Gemstones may have been treated and may...Only $195.00 at jcpenney
no photoGenuine Ruby & Diamond Ring 10K Gold at JCPenney
$195.00
jcpenney
Musical Note Pendant Sterling Silver Necklace with Ruby
For music lovers who also love style, this sculptural note is inspired by hand-written scores. A gem adds a personal touch of brilliance.Only $181.00 at Gemvara
no photoMusical Note Pendant Sterling Silver Necklace with Ruby
$181.00
Gemvara
Split Bamboo Ring Sterling Silver Ring with Ruby
The open band of this stylish ring cradles a brilliant bezel-set gem.Only $253.00 at Gemvara
no photoSplit Bamboo Ring Sterling Silver Ring with Ruby
$253.00
Gemvara
Modern Flower Ring Round Ruby Sterling Silver Ring with Aquamarine & Blue Topaz
Six, sparkling petals surround a seventh round-cut stone. The bezel setting gives a stylish, modern feel to a classic, star-shaped flower ring.Only $231.00 at Gemvara
no photoModern Flower Ring Round Ruby Sterling Silver Ring with Aquamarine & Blue Topaz
$231.00
Gemvara
See More Ruby Jewelry Selections

This Site Awarded
Available RUBY specimens:
RUBY specimen RUB-52
$ 45.00 -40% = $ 27.00
Dims: 1.89x1.55x1.49in (4.80x3.94x3.77cm) .... Wt: 5.1oz (144g) .... Loc: Madagascar
The cross-section of this sapphire crystal shows good hexagonal form and most of one natural termination. Part of the specimen is a mass of brown to black muscovite plus minor amounts of albite.
no photo
RUB-52
$ 27.00
no photo
RUBY specimen RUB-48
$ 25.00 -10% = $ 22.50
Dims: 0.88x0.84x0.64in (2.22x2.14x1.62cm) .... Wt: 0.40oz (11.3g) .... Loc: Rai-Iz, Polar Ural, Russia
This small specimen contains four ruby crystals, but only one is significantly exposed - the others show a single face. Still, it is a nice ruby crystal, with excellent color and a pleasing appearance when examined using a loupe.
no photo
RUB-48
$ 22.50
no photo
see this List of ALL specimens including SOLD ones
 
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