RUBY
the red variety of corundum

  Like: Share:  

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.

Ruby Jewelry - Hover over an item for more information
Baguette Simulated Ruby, 2.30ct t.w. CZ Bangle Bracelet in Silver
Ruby illusionists: this red and white bangle bracelet hosts 4x2mm simulated ruby baguettes and 2.30 ct. t.w. round CZs in a charming display. Foldover clasp closure. Hinged, sterling silver bracelet. CZ weights are diamond equivalents. Ruby birthstones...Only $195.00 at Ross-Simons
no photoBaguette Simulated Ruby, 2.30ct t.w. CZ Bangle Bracelet in Silver
$195.00
Ross-Simons
Round Ruby Sterling Silver Vintage-Inspired Ring with Pink Sapphire & Black Onyx - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $210.00 at Gemvara
no photoRound Ruby Sterling Silver Vintage-Inspired Ring with Pink Sapphire & Black Onyx - Venus Band
$210.00
Gemvara
Lab-Created Ruby & Sapphire Earrings, Yellow, Womens
These lab-created ruby and white sapphire earrings have a timeless style that is versatile and stunning. Metal: 14K yellow gold over sterling silverStone: 2.18 ct. lab-created ruby, 8x5mmOther Stones: .4 ct. tw. lab-created white sapphires, 1.2mm and...Only $166.65 at jcpenney
no photoLab-Created Ruby & Sapphire Earrings, Yellow, Womens
$166.65
jcpenney
Round Alexandrite Sterling Silver Vintage-Inspired Ring with Black Onyx & Ruby - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $225.00 at Gemvara
no photoRound Alexandrite Sterling Silver Vintage-Inspired Ring with Black Onyx & Ruby - Venus Band
$225.00
Gemvara
Round Pink Tourmaline Sterling Silver Mother's Ring with Ruby & Red Garnet - Liana Ring with Three Gems
This lovely leafy vine ring twines across the finger while brilliant gems bloom among the leaves.Only $200.00 at Gemvara
no photoRound Pink Tourmaline Sterling Silver Mother's Ring with Ruby & Red Garnet - Liana Ring with Three Gems
$200.00
Gemvara
Round London Blue Topaz Sterling Silver Vintage-Inspired Ring with Ruby & Emerald - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $225.00 at Gemvara
no photoRound London Blue Topaz Sterling Silver Vintage-Inspired Ring with Ruby & Emerald - Venus Band
$225.00
Gemvara
Ruby Pacha Bangle, Dark Horn - Ashley Pittman - Horn/Bronze
Ashley PittmanRuby Pacha Bangle, Dark HornDetailsWide, polished dark horn snake bangle.Hand-hammered, inlaid bronze snake details.Faceted, bezel-set ruby.Slip-on style.8in inner diameter.1 3/4inW.Handcrafted in Kenya.Designer About Ashley Pittman: The...Only $785.00 at Neiman Marcus
no photoRuby Pacha Bangle, Dark Horn - Ashley Pittman - Horn/Bronze
$785.00
Neiman Marcus
Balinese 15.00 Carat Ruby Ring in 14kt Yellow Gold and Sterling Silver
So fiery and intense, this beautiful Balinese 15.00 carat ruby ring showcases the sensational coloring of this round gem in a wonderfully exotic setting. 14kt yellow gold and sterling silver ring. Ruby birthstones are the perfect gift for July birthdays.Only $131.25 at Ross-Simons
no photoBalinese 15.00 Carat Ruby Ring in 14kt Yellow Gold and Sterling Silver
$131.25
Ross-Simons
Men's Sterling Silver Lizard Toggle Wrap Bracelet, Ruby - JvdF - Ruby
JvdFSterling Silver Lizard Toggle Wrap Bracelet, RubyDetailsSterling silver toggle clasp with JvdF logo.Ring lizard skin bands wrap twice around wrist.Contrasting silk loop.Handmade in USA.Designer About Jvdf Men's Jewelry:JvdF, founded by Justin von...Only $128.00 at Neiman Marcus
no photoMen's Sterling Silver Lizard Toggle Wrap Bracelet, Ruby - JvdF - Ruby
$128.00
Neiman Marcus
Round Ruby Sterling Silver Vintage-Inspired Ring with Citrine & Ruby - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $215.00 at Gemvara
no photoRound Ruby Sterling Silver Vintage-Inspired Ring with Citrine & Ruby - Venus Band
$215.00
Gemvara
Round Ruby Sterling Silver Ring with Blue Topaz & Aquamarine - Split Bamboo Three-Stone Ring
The open band of this stylish ring cradles three brilliant bezel-set gems.Only $205.00 at Gemvara
no photoRound Ruby Sterling Silver Ring with Blue Topaz & Aquamarine - Split Bamboo Three-Stone Ring
$205.00
Gemvara
Round Red Garnet Sterling Silver Necklace with Ruby & White Sapphire - Birds of a Feather Pendant
This lovely feather necklace has three gems. Pick a palette to accent your wardrobe of choose birthstones to carry those you love close to your heart.Only $190.00 at Gemvara
no photoRound Red Garnet Sterling Silver Necklace with Ruby & White Sapphire - Birds of a Feather Pendant
$190.00
Gemvara
Round Ruby Sterling Silver Vintage-Inspired Ring with Emerald & Citrine - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $225.00 at Gemvara
no photoRound Ruby Sterling Silver Vintage-Inspired Ring with Emerald & Citrine - Venus Band
$225.00
Gemvara
Round Ruby Sterling Silver Vintage-Inspired Ring with Fire Opal & Green Tourmaline - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $210.00 at Gemvara
no photoRound Ruby Sterling Silver Vintage-Inspired Ring with Fire Opal & Green Tourmaline - Venus Band
$210.00
Gemvara
Round Peridot Sterling Silver Ring with Ruby & Amethyst - Split Bamboo Three-Stone Ring
The open band of this stylish ring cradles three brilliant bezel-set gems.Only $200.00 at Gemvara
no photoRound Peridot Sterling Silver Ring with Ruby & Amethyst - Split Bamboo Three-Stone Ring
$200.00
Gemvara

This Site Awarded
Available RUBY specimens:
RUBY specimen RUB-52
$ 45.00 -50% = $ 22.50
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
$ 22.50
no photo
RUBY specimen RUB-48
$ 25.00 -20% = $ 20.00
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
$ 20.00
no photo
see this List of ALL specimens including SOLD ones
 

Copyright ©1995-2013 by Amethyst Galleries, Inc.
Site design & programming by galleries.com web services