6.15 CTS SI AMETRINE STONE [S6425]

Item Information

Dimensions (mm) 13 x 11 x 6mm
Weight (carats) not provided
Colors
Certified Gemstone

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AMETRINE

 

This is a natural -un heated stone from Boliva.This rough was from the miner Joe Rudd who is credited with naming the stone "Ametrine "The mine closed down years ago and this is the last of the rough. These stones show differing amounts of citrine and amethyst (as opposed to the 50/50 mix commonly seen in synthetic stones). Beautiful cut.

Grade SI

Emerald cut

Weight 6.15 cts app

Size 12.5 x 10.5 x 5.8 mm app

Cut by a master cutter in Brazil.

The citrine flows through the stone.

Sometimes amethyst and citrine colours are found in the same crystal of quartz. These bicolour yellow and purple quartz gemstones are called ametrine.

Ametrine is most typically faceted in a rectangular shape with a 50/50 pairing of amethyst and citrine. Sometimes a checkerboard pattern of facets is added to the top to increase light reflection. Ametrine can also be cut to blend the two colours so that the result is a mixture of yellow, purple, and peach tones throughout the stone.

 

Type 1 Gemstones
The following gemstones are typically inclusion free, even minor inclusions detract from their value.
Diamond, Amethyst, Beryls(Aquamarine,Morganite), Citrine, Smoky Quartz, topaz, Chrysoberyl, Kunzite, Tanzanite, green Tourmaline, and Blue Zircon
IF Internally flawless under extreme magnification (Very rare)
F Flawless
VVS Minute inclusions under 10x; invisible to the unaided eye
VS Minor inclusions under 10x; usually invisible to the unaided eye
SI1 Noticeable inclusions under 10x; usually visible to the unaided eye
SI2 Noticeable inclusions under 10x; usually quite visible to the unaided eye
I1 prominent- moderate affect on appearance or durability
I2 prominent - severe affect on appearance or durability
I3 prominent- severe affect on beauty, transparency or durability
Type 2 Gemstones
Gemstones that normally have small inclusions that do not detract from value.
Alexandrite, Andalusite, Iolite, Peridot, Rhodolite, Ruby, Sapphire, Spinel, Tourmaline, Garnet, Amethyst, Red Zircon, Tsavorite; Blue, Orange, Purple, Fluorite.Yellow and Parti-colored Tourmaline
F Flawless
VVS Minor inclusions under 10x; usually invisible to the unaided eye
VS Noticeable inclusions under 10x; often invisible to the unaided eye
SI1 Obvious inclusions under 10x; visible to the unaided eye
SI2 Obvious inclusions under 10x; very apparent to the unaided eye
I1 prominent - moderate affect on appearance or durability
I2 prominent - severe affect on appearance or durability
I3 prominent - severe affect on beauty, transparency or durability

 

6 mm = 1/4 inch (Approx)

1d 15h 23m 1s

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Pricing & Details

Bid Increment $1.00
Starting Bid $45.00
Auction ID 259379
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Viewed 551 times
Starts 5th Dec 2016 8:02pm PST
Ends 8th Dec 2016 8:00pm PST

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