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[SG] TOURMALINE STONE -NATURAL 1.75CTS [S1348 ]
- 存貨單位
- 尺寸（毫米）
- x x mm
- 重量 (cts)
- 顏色
-
SEDAGEMS
TOURMALINE BIRTHSTONE FOR OCTOBER.
NATURAL UN HEATED
MINED IN BRAZIL
GRADING SI1
MOHS SCALE 7-7.5
WEIGHT 1.75CTS
SIZE 9X 7X4 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 |
- 存貨單位
- 尺寸（毫米）
- x x mm
- 重量 (cts)
- 顏色
-
SEDAGEMS
TOURMALINE BIRTHSTONE FOR OCTOBER.
NATURAL UN HEATED
MINED IN BRAZIL
GRADING SI1
MOHS SCALE 7-7.5
WEIGHT 1.75CTS
SIZE 9X 7X4 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 |
| 運輸商 | 運送至：國家 | 運送到世界其他地區 |
|---|---|---|
| FedEx | $12.00 / ：幾天天 | $39.00 / ：幾天天 |
|
：國家
FedEx 對包含 2 或更多商品的訂單折扣為 $12.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $39.00
|
||
| Registered Shipping | $9.00 / ：幾天天 | $16.00 / ：幾天天 |
|
：國家
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $9.00
世界其他地區
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $16.00
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積極的Beautiful agate piece , and as always fast efficient service from Sedagems
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積極的
Gorgeous stones, very happy
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積極的
Gorgeous stone, very happy
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