Doug Menadue :: Bespoke Gems - Precision Hand Faceted Gemstones Of The Highest Quality

Amethyst

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Amethyst, Fantasy Cut, Africa, #c109
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Stone : Amethyst
Item : #c109
Design : Fantasy
Origin : Africa
Treatments : None
Weight : 18.3 Carats
Clarity : Very Slightly Included
Size : 19.2X16.4X8.4 mm
Price : 1830

Comments : This is a very beautiful amethyst from Africa with a nice rich colour, it is quite a stunning stone. It has been cut in a fantasy design and would be perfect as a ring or pendent stone. Very special amethyst.

Amethyst, Fantasy Cut, Africa, #c109
Amethyst, Fantasy Cut, Africa, #c109
Amethyst, Fantasy Cut, Africa, #c109
Amethyst, Fantasy Cut, Africa, #c109
Amethyst, Fantasy Cut, Africa, #c109
Amethyst, Fantasy Cut, Africa, #c109
Amethyst, Fantasy Cut, Africa, #c109

 

Amethyst, Fantasy Cut, Africa, #c108
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Stone : Amethyst
Item : #c108
Design : Fantasy
Origin : Africa
Treatments : None
Weight : 11.9
Clarity : Eye Clean
Size : 18X13X7.1 mm
Price : 715

Comments : A beautiful amethyst finished in a fantasy design.

Amethyst, Fantasy Cut, Africa, #c108
Amethyst, Fantasy Cut, Africa, #c108
Amethyst, Fantasy Cut, Africa, #c108
Amethyst, Fantasy Cut, Africa, #c108
Amethyst, Fantasy Cut, Africa, #c108
Amethyst, Fantasy Cut, Africa, #c108

 

Amethyst, Fantasy Cut, Africa, #c107
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Stone : Amethyst
Item : #c107
Design : Fantasy
Origin : Africa
Treatments : None
Weight : 9.5 Carats
Clarity : Very Slightly Included
Size : 15.8X12.4X6.5 mm
Price : 760

Comments : A very fine amethyst cut in a fantasy design.

Amethyst, Fantasy Cut, Africa, #c107
Amethyst, Fantasy Cut, Africa, #c107
Amethyst, Fantasy Cut, Africa, #c107
Amethyst, Fantasy Cut, Africa, #c107
Amethyst, Fantasy Cut, Africa, #c107
Amethyst, Fantasy Cut, Africa, #c107
Amethyst, Fantasy Cut, Africa, #c107

 

Amethyst, Amethyst Shield, #100

Stone : Amethyst
Cut By : Doug Menadue, 2009
Item : #100
Design : Amethyst Shield
Origin : Uruguay
Treatments : None
Weight : 2.7 carats
Clarity : Very Very Slightly Included
Size : 9mm X 9mm X 7mm
Price : 325

Comments : This rich little amethyst has deep colours with strong flashes of violets, blues and reds. This is an exceptional gemstones for those that like richly coloured amethysts.

Amethyst, Amethyst Shield, #100
Amethyst, Amethyst Shield, #100
Amethyst, Amethyst Shield, #100
Amethyst, Amethyst Shield, #100
Amethyst, Amethyst Shield, #100

 

Amethyst, Concave Trillion Zig Cut, Brazil, #c41
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Stone : Amethyst
Item : #c41
Design : Concave Trillion Zig
Origin : Brazil
Treatments : None
Weight : 5.65 carats
Clarity : Included
Size : 12 x 12 x 7.5 mm
Price : 190

This amethyst gem has a lovely colour and is cut in an interesting concave design. It is a good stone and has some veil inclusions. I think this stone would make a good pendant.

Amethyst, Concave Trillion Zig Cut, Brazil, #c41
Amethyst, Concave Trillion Zig Cut, Brazil, #c41
Amethyst, Concave Trillion Zig Cut, Brazil, #c41
Amethyst, Concave Trillion Zig Cut, Brazil, #c41
Amethyst, Concave Trillion Zig Cut, Brazil, #c41
Amethyst, Concave Trillion Zig Cut, Brazil, #c41

 

Amethyst, Amethyst Shield, #46

Stone : Amethyst
Cut By : Doug Menadue, 2008
Item : #46
Design : Amethyst Shield (John Bailey)
Origin : Uruguay
Treatments : None
Weight : 4.84 carats
Clarity : Very Slightly Included
Size : 11mm X 8.5mm
Price : 270

Comments : A very good amethyst ring stone. An interesting trillion design which works well with amethyst and citrine. There is a small veil inclusion just near one corner. It is not visible face up.

Amethyst, Amethyst Shield, #46
Amethyst, Amethyst Shield, #46
Amethyst, Amethyst Shield, #46

 

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Information For precious and semi precious gemstones

Stone : Amethyst
Moh's Hardness : 7
Origin Locations : Minas Gerais, Brazil; Nigeria, Tanzania, Mozambique, Zambia, Namibia, Africa; Sir Lanka, Madagascar; Russia; Mexico; Canada; Binbee near Bowen, QLD, Kuridala QLD, Australia
Treatments : None, Heating
Clarity : Eye Clean to Included
Color : Various shades of violet, pale red-violet, purple. See a colour chart for amethyst here.
Cleavage : None
Crystal System : (Trigonal), hexagonal prisms
Chemical Composition : SiO2 - silicon dioxide
Refractive Index (RI) : 1.544 - 1.553
Density : 2.65
Birthstones : Amethyst is the birthstone for February.
Amethyst is the ayurvedic birthstone for February.
Amethyst is the zodiac stone for Pisces.
Amethyst is the stone for the 6th anniversary.

Comments : Amethyst is instantly recognisable for its lovely violet and purple colors and has long been used in jewelry. It is perhaps the most valuable stone in the quartz family. The name is believed to come from the Greek meaning "not drunken" and was indeed used as an amulet against drunkeness. In past times and even today, amethyst is a favorite gemstone within the christian church, being worn by priests and officals in rings. Historically, amethyst was much rarer then it is today and was highly regarded and valued and considered to be a very precious gem along side emeralds, rubies and sapphires. Today, large deposits are known and this has made it very attainable.

Amethyst is found in many places but some of the best comes from Brazil, Uruguay and Zambia. The amethyst from each location can be quite distinct and recognisable, for example, top Uruguayan amethyst is very highly saturated and has strong blue-purple colors. Some stunning stone called "Siberian" amethyst came from Russia but the deposits have long since been mined out. This particular siberian amethyst had red tones and the name is now (probably too often and incorrectly) used for amethyst that has similar red-purple tones. The term is applied perhaps a little too liberally these days in the market place.

Amethyst is usually found as crystals, either loose or in geodes. These geodes are like hollow rocks with the inside being coated in amethyst crystals. Some of these geodes can attain sizes as big as watermelons and even as big as a person! They are cut in halves and the crystals removed if they are found to be of good facet grade. These geodes are often used as displays and are absolutely beautiful glittering in the candlelight. High quality amethyst facet rough is becoming expensive as costs of mining goes up.

Amethyst can also be heat treated at around 878-1382 degrees F to improve colour or change the colour completely to yellow (citrine), red-brown and even green. The coloring agent in amethyst is iron.

 

 

 

 

 

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