Opals
Gemstones
Jewelry
Coins
[SG] TOURMALINE STONE -NATURAL 1.8CTS [S1427 ]
- SKU
- 寸法(mm)
- x x mm
- 重さ (CT)
- 色
-
SEDAGEMS
TOURMALINE BIRTHSTONE FOR OCTOBER.
NATURAL UN HEATED
MINED IN BRAZIL
GRADING VS
MOHS SCALE 7-7.5
WEIGHT 1.8CTS
SIZE 10X 7X 4MM
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 |
- SKU
- 寸法(mm)
- x x mm
- 重さ (CT)
- 色
-
SEDAGEMS
TOURMALINE BIRTHSTONE FOR OCTOBER.
NATURAL UN HEATED
MINED IN BRAZIL
GRADING VS
MOHS SCALE 7-7.5
WEIGHT 1.8CTS
SIZE 10X 7X 4MM
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 |
| 配送業者 | 配送先Australia | その他の国への配送 |
|---|---|---|
| FedEx | $12.00 / 3 | $39.00 / 10 |
|
：国
FedEx 、 2以上のアイテムを含む注文で$12.00に割引されます
世界のその他の地域
FedEx 、 2以上のアイテムを含む注文で$39.00に割引されます
|
||
| Registered Shipping | $9.00 / 7 | $16.00 / 21 |
|
：国
Registered Shipping 、 2以上のアイテムを含む注文で$9.00に割引されます
世界のその他の地域
Registered Shipping 、 2以上のアイテムを含む注文で$16.00に割引されます
|
||
-
ポジティブNice piece of rough. thankyou
-
ポジティブ
Nice stone. Thankyou
-
ポジティブ
Have received the rough. Nice colour. Thankyou
![3.10 CTS MINT GREEN GLOSSULAR GARNET ROUGH [F5077]](https://liveplatforms-production.b-cdn.net/tenants/gr/uploads/images/415000-419999/419109/536873d918eb0.JPG?width=480&aspect_ratio=1001%3A1000)
-
ポジティブ
Beautiful ametrine. Very fast delivery. Professional seller
![AMETRINE ROUGH-BOLIVIAN 73.65 CTS [F2455]](https://liveplatforms-production.b-cdn.net/tenants/gr/uploads/images/205000-209999/205274/205274_1290135485.jpg?width=480&aspect_ratio=1001%3A1000)
-
ポジティブ
Really beautiful piece. Very happy
