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#Engagement Ring Buying Guide
#Diamonds - The 4Cs plus more
Common Gemstone Terms
Gemstone: is a mineral or other natural
material that is beautiful enough, durable enough, and rare enough, to be used
for personal adornment or for the embellishment of personal possessions. This is
the modern definition of a gemstone. Non-mineral gemstones include: coral,
pearl, amber, ivory, these examples are all organic
Treated: Gemstones can undergo various treatments to enhance their value. These gemstones are still natural gemstones. Example: Natural Blue Sapphire - heat treated, Natural Emerald - oiled.
Synthetic: A synthetic 'gemstone' is a
man-made material having the same chemical composition, crystal structure, and
most physical properties of a (natural) gemstone. For example, Synthetic Ruby or
Synthetic Diamond. Synthetic gemstones are sometimes called "lab-created",
"created" or "man-made".
Some Popular Gemstones
Amethyst: A member of the Quartz family. Colour ranges from pale lilac to deep purple. The major source of amethyst gemstones is Brazil. Others include India, Namibia, Sri Lanka, USA, Uruguay and Zambia. The hardness of amethyst is 7 on teh Mohs scale, with Diamond being 10.
Aquamarine: A member of the Beryl family. Colour varies from greenish blues to blue-green. The major source of Aquamarine is Brazil. Other sources include Australia, China, Kenya, Madagascar & Nigeria. The hardness of aquamarine is 7.5 - 8 on the Mohs scale, with Diamond being 10.
Citrine: A member of the Quartz family. Colour varies from yellow to orange. Sources of Citrine include Bolivia, Brazil and Spain. The hardness of Citrine is 7 on the Mohs scale, with Diamond being 10.
Emerald: A member of the Beryl family of gemstones. Colour is various shades of green. Sources of Emerald include Afghanistan, Brazil, Colombia, Pakistan, Russia, Zambia & Zimbabwe. The hardness of Emerald is 7.5 - 8 on the Mohs scale, with Diamond being 10.
Peridot: Colour ranges from brownish green, yellowish green to greenish yellow. Sources of Peridot are Myanmar, Pakistan and USA. The hardness of Peridot is 6.5 - 7 on the Mohs scale, with Diamond being 10.
Rhodolite: A member of the Garnet family. Colours range from light to dark purplish red through to reddish purple. Sources of Rhodolite include Sri Lanka, Tanzania and Zimbabwe. The hardness of Emerald is 7 - 7.5 on the Mohs scale, with Diamond being 10.
Ruby: A member of the Corundum family. Colour is predominantly red but can be ever so slightly pink, purple or orange. Sources include Myanmar, Sri Lanka, Thailand, Afghanistan, Kenya, Madagascar and Vietnam. The hardness of Emerald is 9 on the Mohs scale, with Diamond being 10.
Sapphire: A member of the Corundum family.
Tanzanite: Source is Tanzania.
Topaz: Colours include brown, blue, green, yellow, orange, pink, red, purple or colourless. Sources of Topaz include Australia, Brazil, Madagascar, Mexico, Myanmar and Namibia.
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