RUBY
the red variety of corundum

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.

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

Written in the Stars Ring Round Ruby Sterling Silver Ring with Pink Tourmaline
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

Written in the Stars Ring Round Ruby Sterling Silver Ring with Pink Tourmaline
$168.00

Written in the Stars Ring Round Ruby Sterling Silver Ring with Yellow Sapphire
Two glittering gemstones and numerous star etchings rest atop the hollowed upper band of this gleaming ring, designed for the stargazers among us.Only $173.00 at

Written in the Stars Ring Round Ruby Sterling Silver Ring with Yellow Sapphire
$173.00

Roberto Coin Exclusive Pave Cross Medallion Bracelet
A dazzling cross pendant suspends from a lovely, simple link-chain bracelet with pave diamond stations. Exclusively ours. 18-karat white gold. Evenly spaced pave diamond stations lead to a diamond cross pendant at center; 0.18 total carat weight....Only $740.00 at

Roberto Coin Exclusive Pave Cross Medallion Bracelet
$740.00

Sterling Silver White Topaz, Ruby, Rubellite Tourmaline Tennis Bracelet Jewelry
This Bracelet was handmade by a master artisan and is one of a kind.Only $746.24 at

Sterling Silver White Topaz, Ruby, Rubellite Tourmaline Tennis Bracelet Jewelry
$746.24

Modern Flower Ring Round Ruby Sterling Silver Ring with Fire Opal & Black Onyx
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 $213.00 at

Modern Flower Ring Round Ruby Sterling Silver Ring with Fire Opal & Black Onyx
$213.00

Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold, Size 5
Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold, Size 5 #08ES41008CRU:V5. An incredible heart felt ruby gemstone rests regally as the glistening center stone in this 10 karat yellow gold ring while two crisp diamonds serve to...Only $149.00 at

Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold, Size 5
$149.00

1/2 TCW Genuine Sapphire Lab-Created Ruby Platinum Over Sterling Silver Heart Pendant and Chain 18'' by PalmBeach Jewelry
Rated by 25,000+ Customers. 1/2 TCW Genuine Sapphire Lab-Created Ruby Platinum Over Sterling Silver Heart Pendant and Chain 18''Only $119.99 at

1/2 TCW Genuine Sapphire Lab-Created Ruby Platinum Over Sterling Silver Heart Pendant and Chain 18'' by PalmBeach Jewelry
$119.99

Claddagh Ring Heart Red Garnet Sterling Silver Ring with Rhodolite Garnet & Ruby
This timeless design is inspired by the traditional Irish Claddagh Ring, which is given as a token of love or of marriage. The heart symbolizes love, the hands friendship and the crown, loyalty.Only $428.00 at

Claddagh Ring Heart Red Garnet Sterling Silver Ring with Rhodolite Garnet & Ruby
$428.00

Written in the Stars Ring Round Ruby Sterling Silver Ring with Black Onyx
Two glittering gemstones and numerous star etchings rest atop the hollowed upper band of this gleaming ring, designed for the stargazers among us.Only $161.00 at

Written in the Stars Ring Round Ruby Sterling Silver Ring with Black Onyx
$161.00

Initials 'J' Disc Charm Pendant with Gem Sterling Silver Necklace with Ruby
Your initial, or that of someone you love, is engraved in elegant script on a disc of precious metal, and accented by a single, sparkling gemstone. You choose the letter, metal and gem. Our artisans set to work, handcrafting the kind of pendant you'll...Only $196.00 at

Initials 'J' Disc Charm Pendant with Gem Sterling Silver Necklace with Ruby
$196.00

Lover's Knot Ring Sterling Silver Ring with Ruby & Black Onyx
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 $209.00 at

Lover's Knot Ring Sterling Silver Ring with Ruby & Black Onyx
$209.00

Written in the Stars Ring Round Ruby Sterling Silver Ring with Smoky Quartz
Two glittering gemstones and numerous star etchings rest atop the hollowed upper band of this gleaming ring, designed for the stargazers among us.Only $162.00 at

Written in the Stars Ring Round Ruby Sterling Silver Ring with Smoky Quartz
$162.00

Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold, Size 7
Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold, Size 7 #08ES41008CRU:V7. An incredible heart felt ruby gemstone rests regally as the glistening center stone in this 10 karat yellow gold ring while two crisp diamonds serve to...Only $149.00 at

Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold, Size 7
$149.00

Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold
Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold #08ES41008CRU. An incredible heart felt ruby gemstone rests regally as the glistening center stone in this 10 karat yellow gold ring while two crisp diamonds serve to complete the...Only $149.00 at

Created Ruby Heart Ring with Diamonds 7/8 Carat (ctw) in 10K Yellow Gold
$149.00

"14K Yellow Gold 14Mm Ladies Synthetic Ruby Ring"
"Solid 14k yellow gold synthetic ruby ring. The ring width is 14mm. Made In USA"Only $196.00 at

"14K Yellow Gold 14Mm Ladies Synthetic Ruby Ring"
$196.00

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