APRIL BIRTHSTONE - DIAMOND

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Diamond is the ultimate gemstone, having few weaknesses and many strengths. It is well known that Diamond is the hardest substance found in nature, but few people realize that Diamond is four times harder than the next hardest natural mineral, corundum (sapphire and ruby). But even as hard as it is, it is not impervious. Diamond has four directions of cleavage, meaning that if it receives a sharp blow in one of these directions it will cleave, or split. A skilled diamond setter and/or jeweler will prevent any of these directions from being in a position to be struck while mounted in a jewelry piece.

As a gemstone, Diamond's single flaw (perfect cleavage) is far outdistanced by the sum of its positive qualities. It has a broad color range, high refraction, high dispersion or fire, very low reactivity to chemicals, rarity, and of course, extreme hardness and durability.

Diamond is the April Birthstone, and an alternate Zodiac stone for the Constellation of Aries.

Diamond is the ultimate gemstone in several ways:

  • Hardness: Diamond is a perfect "10", simply the hardest substance known by a wide margin. Nothing can scratch a diamond other than another diamond. And a diamond can scratch anything, even a sapphire.
  • Clarity: Pure diamond is completely colorless and transparent over a larger range of wavelengths (from the ultraviolet into the far infrared) than is any other solid or liquid substance - nothing else even comes close.
  • Thermal Conductivity: Diamond conducts heat better than anything - five times better than the second best element, Silver! This characteristic is the basis for "diamond tests", as it is simple and cannot be faked.
  • Refraction: Diamond has a relatively high index of refraction (ability to bend light), which gives it the high luster called adamantine.
  • Dispersion: Diamond has a relatively high optical dispersion which gives diamond the "fire" that makes it so desirable.
Diamonds may be nearly any color in the rainbow plus browns, grays, and white. Shades of yellow are most common, followed by colorless. Blue, black, reddish, and greenish are more valuable (some extremely so).

Diamonds are found in a type of rock called "Kimberlite", which comprises the core of certain volcanoes over especially thick portions of the earth's crust.  This hard stone is mined and then crushed between giant steel rollers.  The kimberlite is reduced to fine gravel, yet the extremely hard diamonds come out unharmed!  Water is added and a grease covered roller sorts the diamonds from the gravel, as the diamonds stick to the grease. Typically, a single carat of diamond is recovered from a ton of rich ore.

Diamonds are found in many areas including South Africa, Russia, and even in Arkansas in the USA.  In all cases, the diamonds formed deep within the earth's mantle, and were brought to the surface in volcanic eruptions.  In many cases, the diamonds weathered out of the kimberlite by natural processes, and were transported downstream by water.  Many diamonds are mined in the resulting alluvial deposits in areas such as along the coast of South Africa.


To see our natural diamond specimens, see the diamond specimens pages.

Diamond Jewelry - Hover over an item for more information
.20 ct. t.w. Evil Eye Diamond Bracelet in Sterling Silver
An RS exclusive. Our lucky evil eye bracelet winks with .20 ct. t.w. of black, white and treated blue diamonds. Sterling silver bracelet. Diamond birthstones are the perfect gift for April birthdays.Only $168.75 at Ross-Simons
no photo.20 ct. t.w. Evil Eye Diamond Bracelet in Sterling Silver
$168.75
Ross-Simons
" 14k Yellow Gold Diamond Bracelet 7.5"""
"A stunning yellow gold bracelet, featuring 1.00 cts of baguette stones of SI1 in clarity and G in color."Only $855.00 at Sarraf Jewelry
no photo" 14k Yellow Gold Diamond Bracelet 7.5"""
$855.00
Sarraf Jewelry
1/6 TCW Round Diamond 10k Yellow Gold Engagement Anniversary Promise Ring
Light your look with diamond dazzle. Classic round diamond ring, 1/6 carat T.W., is the perfect choice for a ''first'' diamond gift, that special engagement ring, or as an extra touch of sparkle set in 10k gold. Sizes 5-10. (All carat weights are...Only $208.99 at PalmBeachJewelry
no photo1/6 TCW Round Diamond 10k Yellow Gold Engagement Anniversary Promise Ring
$208.99
PalmBeachJewelry
Lollipop Diamond Bezel Clear Quartz Pendant Necklace - Ippolita - Silver
IppolitaLollipop Diamond Bezel Clear Quartz Pendant NecklaceDetailsThis Ippolita pendant necklace offers light and luster with clear quartz and brilliant white diamonds.Hand-hammered sterling silver.Round-cut clear quartz pendant.Pave diamond...Only $495.00 at Neiman Marcus
no photoLollipop Diamond Bezel Clear Quartz Pendant Necklace - Ippolita - Silver
$495.00
Neiman Marcus
Diamond Band Ring - Armenta - Dark gray (7)
ArmentaDiamond Band RingDetailsRound diamonds create refracted lighting effects over this Armenta ring's signature oxidized sterling silver.Oxidized sterling silver band.Round-cut diamonds, 0.68 total carat weight.1/8inW.Made in USA.Designer About...Only $990.00 at Neiman Marcus
no photoDiamond Band Ring - Armenta - Dark gray (7)
$990.00
Neiman Marcus
Cushion Cut Halo Diamond Engagement Ring in 14k white gold, size 3 - 9
Delicate in design, this diamond engagement ring showcases micropave-set diamonds to frame the cushion cut diamond of your choice set in enduring 14k white gold.Only $1,570.00 at Blue Nile
no photoCushion Cut Halo Diamond Engagement Ring in 14k white gold, size 3 - 9
$1,570.00
Blue Nile
"14k Yellow Gold on White 6mm With 0.09ct. Diamond Wedding Band"
"An Elegant and stylish hand crafted Diamond wedding band. This wedding band is created by a master craftsman to make a special ring to commemorate your special day. This ring is 6mm wide, and inlayed with diamonds for more stylish look. The ring is s"Only $1,102.00 at Sarraf Jewelry
no photo"14k Yellow Gold on White 6mm With 0.09ct. Diamond Wedding Band"
$1,102.00
Sarraf Jewelry
Diamonds of Devotion Cross
A stunning 14kt gold-plated cross with a radiant central station. Sparkling with 18 diamonds -- four baguettes, or rectangular-cut diamonds, surround a gleaming round diamond in the center. Thirteen additional diamonds adorn the cross, reflecting the...Only $149.00 at Danbury Mint
no photoDiamonds of Devotion Cross
$149.00
Danbury Mint
Traviata Diamond Engagement Ring in 14k White Gold, size 3.5 - 8.5
Complement your center diamond perfectly with this 14k white gold engagement ring accented with three prong-set diamonds on each side.Only $870.00 at Blue Nile
no photoTraviata Diamond Engagement Ring in 14k White Gold, size 3.5 - 8.5
$870.00
Blue Nile
14-Karat White Gold Butterfly Ring with Pave Diamonds - Sydney Evan - White gold (6.5)
Sydney Evan14-Karat White Gold Butterfly Ring with Pave DiamondsDetails14-karat white gold butterfly ring by Sydney Evan.Pave white diamonds, 0.07 total carat weight.17mm (2/3in) interior diameter.Imported.Designer About Sydney Evan Jewelry:Creator...Only $750.00 at Neiman Marcus
no photo14-Karat White Gold Butterfly Ring with Pave Diamonds - Sydney Evan - White gold (6.5)
$750.00
Neiman Marcus
Princess Cut Diamond Engagement Ring and Wedding Band Set 1/2 Carat (ctw) in 10K Yellow Gold, Size 7
Princess Cut Diamond Engagement Ring and Wedding Band Set 1/2 Carat (ctw) in 10K Yellow Gold, Size 7 #08GS2420150:V7. Four invisible-set square princess cut diamonds are flanked by rows of gently glimmering round accent diamonds in this gorgeous...Only $995.00 at MyJewelryBox.com
no photoPrincess Cut Diamond Engagement Ring and Wedding Band Set 1/2 Carat (ctw) in 10K Yellow Gold, Size 7
$995.00
MyJewelryBox.com
CT. T.W. Diamond 10K White Gold Anniversary Band, White/Gold, Womens
A stunning choice for a wedding or anniversary band, this 10K white gold ring features etched metalwork and ct. t.w. round diamonds in a pavé setting she ll love forever. Metal: 10K white goldStones: ct. t.w. round diamondsColor: I-JClarity:...Only $749.98 at jcpenney
no photoCT. T.W. Diamond 10K White Gold Anniversary Band, White/Gold, Womens
$749.98
jcpenney
"14k Gold Diamond Cut Scorpion Pendant 15mm W X 31mm H"
"14K Gold diamond cut Scorpion Pendant measuring 15mm W x 31mm H including hook."Only $165.00 at Sarraf Jewelry
no photo"14k Gold Diamond Cut Scorpion Pendant 15mm W X 31mm H"
$165.00
Sarraf Jewelry
Evil Eye Bracelet with Sapphire & Diamonds - Jamie Wolf - Sapphire
Jamie WolfEvil Eye Bracelet with Sapphire & DiamondsDetails18-karat yellow gold.Integrated evil eye pendant with blue sapphire solitaire and white pave diamonds.Dainty cable chain bracelet.0.03 total diamond carat weight.6 1/2inL.Hook clasp with...Only $795.00 at Neiman Marcus
no photoEvil Eye Bracelet with Sapphire & Diamonds - Jamie Wolf - Sapphire
$795.00
Neiman Marcus
Heirloom Petite Cathedral Pave Diamond Engagement Ring in 18k Yellow Gold, size 3.5 - 15
Elegant with a touch of vintage, this diamond engagement ring setting features pave-set diamonds in a delicate 18k yellow gold milgrain design to frame your center diamond. 1/8 carat total diamond weightOnly $800.00 at Blue Nile
no photoHeirloom Petite Cathedral Pave Diamond Engagement Ring in 18k Yellow Gold, size 3.5 - 15
$800.00
Blue Nile
 



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