1.20 CTS CERTIFIED TOURMALINE - STUNNING COLOUR [TMG4]
- UGS
- Dimensions (mm)
- 7.000 x 6.850 x 4.350mm
- Poids (cts)
- 1.200
- Certified Gemstones
- Oui
- Taper
- Faceted
- Couleurs
-
Member of International Coloured stone asociation commited to full disclouser of stone with money back guarantee
SEDAGEMS
TOURMALINE BIRTHSTONE FOR OCTOBER.
Sent with a display certificate and plastic cover
NATURAL GEM - NO TREATMENTS
MINED IN BRAZIL
GRADING VS
MOHS SCALE 7-7.5
WEIGHT 1.20 CTS
SIZE 7.00 x 6.85 x 4.35 MM
Tourmaline is a crystal silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline gem stones come in a wide variety of colors.Tourmaline has a variety of colors. Usually, iron-rich tourmalines are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmalines are almost any color: blue, green, red, yellow, pink etc. Rarely, it is colorless. Bi-colored and multicolored crystals are common, reflecting variations of fluid chemistry during crystallisation. Crystals may be green at one end and pink at the other, or green on the outside and pink inside: this type is called watermelon tourmaline. Some forms of tourmaline are dichroic, in that they change color when viewed from different directions.
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
- UGS
- Dimensions (mm)
- 7.000 x 6.850 x 4.350 mm
- Poids (cts)
- 1.200
- Certified Gemstones
- Oui
- Taper
- Faceted
- Couleurs
-
Member of International Coloured stone asociation commited to full disclouser of stone with money back guarantee
SEDAGEMS
TOURMALINE BIRTHSTONE FOR OCTOBER.
Sent with a display certificate and plastic cover
NATURAL GEM - NO TREATMENTS
MINED IN BRAZIL
GRADING VS
MOHS SCALE 7-7.5
WEIGHT 1.20 CTS
SIZE 7.00 x 6.85 x 4.35 MM
Tourmaline is a crystal silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline gem stones come in a wide variety of colors.Tourmaline has a variety of colors. Usually, iron-rich tourmalines are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmalines are almost any color: blue, green, red, yellow, pink etc. Rarely, it is colorless. Bi-colored and multicolored crystals are common, reflecting variations of fluid chemistry during crystallisation. Crystals may be green at one end and pink at the other, or green on the outside and pink inside: this type is called watermelon tourmaline. Some forms of tourmaline are dichroic, in that they change color when viewed from different directions.
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
Fournisseur d'expédition | Expédition vers Australia | Expédition dans le reste du monde |
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FedEx | $12.00 / 3 | $39.00 / 10 |
Australia
FedEx bénéficie d'une remise de $12.00 sur les commandes contenant 2 ou plus d'articles
Reste du monde
FedEx bénéficie d'une remise de $39.00 sur les commandes contenant 2 ou plus d'articles
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Registered Shipping | $9.00 / 7 | $16.00 / 21 |
Australia
Registered Shipping bénéficie d'une remise de $9.00 sur les commandes contenant 2 ou plus d'articles
Reste du monde
Registered Shipping bénéficie d'une remise de $16.00 sur les commandes contenant 2 ou plus d'articles
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Positif
Great thank very much, lovely pearls.
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Positif
Nice piece of rough. thankyou
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Positif
Nice stone. Thankyou
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Positif
Have received the rough. Nice colour. Thankyou
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Positif
Beautiful ametrine. Very fast delivery. Professional seller
Audit
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The Verified Seller responsible for this item has diligently provided us with accurate and comprehensive information, encompassing crucial details such as weight, dimensions, and treatment. It is important to reiterate our commitment to upholding the highest standards of integrity and transparency in the gemstone industry. As part of our policy, we strictly permit the sale of exclusively natural gemstones that have been sourced directly from the Earth. However, in the event that a gemstone has undergone any form of treatment, it is mandatory for the seller to provide full disclosure regarding the treatment process. Furthermore, we would like to emphasize that man-made gemstones, including simulants and imitations, are strictly prohibited on our platform. We prioritize the promotion of authentic, natural gemstones to ensure a genuine and trustworthy marketplace for our valued customers. Should you have any further inquiries or require additional assistance, please do not hesitate to reach out. We are here to assist you and provide a seamless experience on Gem Rock Auctions.