ROYAL BLUE KYANITE STONE FACETED -INDIA 1.88 CTS [S5081 ]
- UGS
- Dimensions (mm)
- x x mm
- Poids (cts)
- Certified Gemstones
- Non
- Taper
- Faceted
- Couleurs
-
KYANITE
This is a natural untreated stone well faceted and ready for setting.This stone is becoming more popular due to it looking like blue sapphire and Tanzite but at a much cheaper price.
Royal deep blue
Grading SI1[refer to note below]
Weight 1.88 cts app
Size 8 x 6 x 4 mm app
Kyanite, whose name derives from the Greek word kuanos sometimes referred to as "kyanos", meaning deep blue, is a typically blue silicate mineral, commonly found in aluminium-rich metamorphic pegmatites and/or sedimentary rock.
Kyanite derives its color from the trace elements or minerals iron and titanium, similar to the ones that give the blue sapphire its color.
Kyanite, like most gemstones, is available in all qualities: VVS, VS, SI1 and I, though VVS quality Kyanites are hard to find. The common faint natural inclusions visible to the naked eye are minute needle-like inclusions, feathers and color zoning.However as the stone is dark the inclusions arent that obivious
At present here are no treatments known that could enhance kyanite.
Kyanite's elongated, columnar crystals are usually a good first indication of the mineral, as well as its color (when the specimen is blue).
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)
- x x mm
- Poids (cts)
- Certified Gemstones
- Non
- Taper
- Faceted
- Couleurs
-
KYANITE
This is a natural untreated stone well faceted and ready for setting.This stone is becoming more popular due to it looking like blue sapphire and Tanzite but at a much cheaper price.
Royal deep blue
Grading SI1[refer to note below]
Weight 1.88 cts app
Size 8 x 6 x 4 mm app
Kyanite, whose name derives from the Greek word kuanos sometimes referred to as "kyanos", meaning deep blue, is a typically blue silicate mineral, commonly found in aluminium-rich metamorphic pegmatites and/or sedimentary rock.
Kyanite derives its color from the trace elements or minerals iron and titanium, similar to the ones that give the blue sapphire its color.
Kyanite, like most gemstones, is available in all qualities: VVS, VS, SI1 and I, though VVS quality Kyanites are hard to find. The common faint natural inclusions visible to the naked eye are minute needle-like inclusions, feathers and color zoning.However as the stone is dark the inclusions arent that obivious
At present here are no treatments known that could enhance kyanite.
Kyanite's elongated, columnar crystals are usually a good first indication of the mineral, as well as its color (when the specimen is blue).
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 |
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Positif
Beautiful agate piece , and as always fast efficient service from Sedagems
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Positif
Nice
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Positif
Gorgeous stones, very happy
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Positif
Gorgeous stone, very happy