Diamond. (The month of April)
Actually that is strictly speaking, not true. Alexandrite (June), is far rarer and far more expensive than Diamond, Sapphire, Emerald or Ruby. This is due to the fact that Alexandrite is unique in the way that it dramatically changes colour depending on the light source. In sunlight it is blue, green or cyan but in all forms of indoor light it is purple, burgundy or maroon. An alexandrite of top Russian quality is worth up to $100,000USD per carat. Not even flawless diamonds are that valuable.
Therefore, the answer is:
Alexandrite (June)
Please note that the Hope Diamond, while priceless, doesn't count because its value comes from its history, not the fact that it is a Diamond.
All of the birthstones are important. For example, a peridot represents happiness, and a emerald represents pure love. Some people may think that a diamond is the most important because it is most valuable, or a peridot because it represents happiness and because happiness is the most important thing, but all the birth stones are important all the same. They would be perfect with each other.
the most popular birthstone is aqua marine
topaz
Garnets
The most famous birthstone for December just so happens to be blue topaz. Blue topaz shares several aesthetic similarities with aquamarine, the birthstone for March.
octobers birthstone is the opal. it can be many colors but the most common color is white.
Golden topaz was the most traditional birthstone for November but, due to the rarity of this stone, citrine is the more commonly referred to as the birthstone for that month.
It is a matter of personal opinion
There is no birthstone for birthdays, only birthstones. But November's birthstone is Citrine.
a very beatiful birthstone
The most famous birthstone for December just so happens to be blue topaz. Blue topaz shares several aesthetic similarities with aquamarine, the birthstone for March.
octobers birthstone is the opal. it can be many colors but the most common color is white.
Golden topaz was the most traditional birthstone for November but, due to the rarity of this stone, citrine is the more commonly referred to as the birthstone for that month.
Her birthstone is the Blue Topaz, the December birthstone.
It is a matter of personal opinion
Turquoise is the birthstone most often associated with the Zodiac sign Sagittarius. Other blue stones can also have a positive effect on this sign.
Citrine His birthstone is topaz.His birthday is November 5th, 1987 The birthstone for November is Topaz the alternate birthstone is Citrine The mystic birthstone for November was pearl
There is no birthstone for birthdays, only birthstones. But November's birthstone is Citrine.
The birthstone for July is the ruby. A mother's birthstone necklace for July can be purchased from Gemvara or Overstockjeweler. Ruby necklaces can also be purchased from most high street jewellery stores.
The modern birthstone for October is Opal or Tourmaline, the traditional birthstone is Tourmaline, the Mystical birthstone is Jasper, the Ayurvedic birthstone is Opal and the alternative birthstone is pink tourmaline.
The Birthstones January's birthstone is the garnet. February's birthstone is the amethyst. March's birthstone is the aquamarine. April's birthstone is the diamond. May's birthstone is the emerald. June's birthstone is the pearl. July's birthstone is the ruby. August's birthstone is the peridot. September's birthstone is the sapphire. October's birthstone is the opal. November's birthstone is the citrine. December's birthstone is the turquoise.