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Gemstones

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GEMSTONES

 

Precious Gemstones:

When shopping for Gemstones, Rubies, Emeralds, and Sapphires are the first that come to mind. Following Diamonds, these precious stones are highly visible in popular culture. Angelina Jolie's famous red-carpet Emerald earrings, Shakespeare's mention of Rubies in his poems, and the largest Sapphire in the world "The Star of India" are just a few references to these desirable stones.

Rubies

The Ruby is a naturally-occuring gemstone with colors ranging from pink to deep reddish-brown. The color is due to the presence the Chromium element. In fact, color is the key factor in determining a Ruby's value. Unlike Diamonds, certain needle-like inclusions within a Ruby can increase it's brilliance and value. View all Ruby jewelry
 
 

Emeralds

Despite being often highly included and thus a significantly weaker gemstone, the green Emerald holds great appeal. They are graded using the four C's: Color, Cut, Clarity and Crystal. Crystal refers to it's level of transparency, and is a vital factor in determining value, as is it's green hue.

Sapphires

Sapphires are a naturally occuring gemstone variety of the mineral Corundum. They are found in many different colors, with the exception of red which are called Rubies. The color most noted is the Blue Sapphire which is caused by it's Titanium and Iron impurites. Sapphires are evaluated according to Hue, Saturation and Tone. Sapphires, may be heat-treated to improve color, but this may degrade the stone's clarity aspects.



Semi-Precious Gemstones

Aside from precious stones, there are also common gemstones that are widely used in jewelry and sought for their unique beauty. Grading these stones will vary amongst different laboratories, but Color will always be a significant factor in value, along with hardness and in some cases 'clarity'.

Here is a list of the most common Semi-Precious Gemstones:

Agate (Quartz: Chalcedony)
Alexandrite (Chrysoberyl)
Amber  (Fossilized Resin)
Amethyst (Quartz)
Andalusite
Aquamarine
Aventurine
Axinite
Benitoite
Beryl
Bixbite
Bloodstone
Carnelian
Cassiterite
Chalcedony
Chrysoprase
Citrine
Clinohumite
Diamond
Emerald
Garnet
Iolite
Jade
Jasper
Kunzite  
Lapis Lazuli
Malachite
Moonstone
Obsidian
Onyx
Opal
Pearl
Peridot
Quartz
Rose Quartz
Ruby
Sapphire
SpinelTanzanite
Tiger Eye
Topaz
Tourmaline
Turquoise
Zircon