Clear Quartz Point 42.5 g 48x26x23 mm Well Cut Polished Single Terminated

Description

Well cut and polished natural untreated Clear Quartz crystal Point (single terminated) made in China.
The quartz crystal is from Brazil.
Weight:    42.5 g
Size    :   48x26x23 mm
***
Quartz
Quartz is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar.
Allaboutlearning
Your best online business partner
Clear Quartz Point 42.5 g 48x26x23 mm Well Cut Polished Single Terminated
Well cut and polished natural untreated
Clear Quartz crystal Point (single terminated)
made in China.
The quartz crystal is from Brazil.
Weight:    42.5 g
Size    :   48x26x23 mm
***
Quartz
Quartz
is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar.
Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at 573 °C (846 K; 1,063 °F). Since the transformation is accompanied by a significant change in volume, it can easily induce fracturing of ceramics or rocks passing through this temperature threshold.
There are many different varieties of quartz, several of which are semi-precious gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia.
Quartz belongs to the trigonal crystal system. The ideal crystal shape is a six-sided prism terminating with six-sided pyramids at each end. In nature quartz crystals are often twinned (with twin right-handed and left-handed quartz crystals), distorted, or so intergrown with adjacent crystals of quartz or other minerals as to only show part of this shape, or to lack obvious crystal faces altogether and appear massive. Well-formed crystals typically form in a 'bed' that has unconstrained growth into a void; usually the crystals are attached at the other end to a matrix and only one termination pyramid is present. However, doubly terminated crystals do occur where they develop freely without attachment, for instance within gypsum. A quartz geode is such a situation where the void is approximately spherical in shape, lined with a bed of crystals pointing inward.
Although many of the varietal names historically arose from the color of the mineral, current scientific naming schemes refer primarily to the microstructure of the mineral. Color is a secondary identifier for the cryptocrystalline minerals, although it is a primary identifier for the macrocrystalline varieties.
Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. These color differentiations arise from chromophores which have been incorporated into the crystal structure of the mineral. Polymorphs of quartz include: α-quartz (low), β-quartz, tridymite, moganite, cristobalite, coesite, and stishovite.
The most important distinction between types of quartz is that of
macrocrystalline
(individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline. Chalcedony is a cryptocrystalline form of silica consisting of fine intergrowths of both quartz, and its monoclinic polymorph moganite. Other opaque gemstone varieties of quartz, or mixed rocks including quartz, often including contrasting bands or patterns of color, are agate, carnelian or sard, onyx, heliotrope, and jasper.
Item Specifics
Total Carat Weight (TCW)
212.5
Natural/Lab-Created
Natural
Color
White
Shape
Rough
Treatment
Not Enhanced
Brand
Unbranded
Country/Region of Manufacture
China
Length
48
Width
26
Depth
23
Country of Origin
Brazil
Cut Grade
Good
Transparency
Translucent
Modified Item
No
Payment
Payment: By Paypal
Shipping cost
Free shipping cost.
We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery.
We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery.
Return policy
Returns: We accept returns with any reason in 30 days. Buyer will bear the return shipping cost.
Messages
We will answer messages in 24 hours during working days.
[ Policy
: This is the contents of your policies. You can add a banner for this policy as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]
Allaboutlearning
Your best online business partner
Clear Quartz Point 42.5 g 48x26x23 mm Well Cut Polished Single Terminated
Well cut and polished natural untreated
Clear Quartz crystal Point (single terminated)
made in China.
The quartz crystal is from Brazil.
Weight:    42.5 g
Size    :   48x26x23 mm
***
Quartz
Quartz
is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar.
Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at 573 °C (846 K; 1,063 °F). Since the transformation is accompanied by a significant change in volume, it can easily induce fracturing of ceramics or rocks passing through this temperature threshold.
There are many different varieties of quartz, several of which are semi-precious gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia.
Quartz belongs to the trigonal crystal system. The ideal crystal shape is a six-sided prism terminating with six-sided pyramids at each end. In nature quartz crystals are often twinned (with twin right-handed and left-handed quartz crystals), distorted, or so intergrown with adjacent crystals of quartz or other minerals as to only show part of this shape, or to lack obvious crystal faces altogether and appear massive. Well-formed crystals typically form in a 'bed' that has unconstrained growth into a void; usually the crystals are attached at the other end to a matrix and only one termination pyramid is present. However, doubly terminated crystals do occur where they develop freely without attachment, for instance within gypsum. A quartz geode is such a situation where the void is approximately spherical in shape, lined with a bed of crystals pointing inward.
Although many of the varietal names historically arose from the color of the mineral, current scientific naming schemes refer primarily to the microstructure of the mineral. Color is a secondary identifier for the cryptocrystalline minerals, although it is a primary identifier for the macrocrystalline varieties.
Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. These color differentiations arise from chromophores which have been incorporated into the crystal structure of the mineral. Polymorphs of quartz include: α-quartz (low), β-quartz, tridymite, moganite, cristobalite, coesite, and stishovite.
The most important distinction between types of quartz is that of
macrocrystalline
(individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline. Chalcedony is a cryptocrystalline form of silica consisting of fine intergrowths of both quartz, and its monoclinic polymorph moganite. Other opaque gemstone varieties of quartz, or mixed rocks including quartz, often including contrasting bands or patterns of color, are agate, carnelian or sard, onyx, heliotrope, and jasper.
Item Specifics
Total Carat Weight (TCW) :
212.5
Natural/Lab-Created :
Natural
Color :
White
Shape :
Rough
Treatment :
Not Enhanced
Brand :
Unbranded
Country/Region of Manufacture :
China
Length :
48
Width :
26
Depth :
23
Country of Origin :
Brazil
Cut Grade :
Good
Transparency :
Translucent
Modified Item :
No
Payment
Payment: By Paypal
Shipping cost
Free shipping cost.
We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery.
We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery.
Return policy
Returns: We accept returns with any reason in 30 days. Buyer will bear the return shipping cost.
Messages
We will answer messages in 24 hours during working days.
[ Policy
: This is the contents of your policies. You can add a banner for this policy as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]
Copyright of XXXXX. All right reserved.
Shop Category
Store Home
Minerals, Stones & Gemstones
◈  Display Specimens Set
◈  Stone Mix & Bulk Lots
◈  Single piece
Animal and plant specimens
◈  Collection Sets
◈  Life Cycle Specimen
◈  Animal Skeleton
◈  Laminated Specimen
◈  Insect single specimen
◈  Animal single specimen
◈  Plant Single Specimen
Animal & plant ornament
◈  Key ring
◈  Bracelet
◈  Necklace
◈  Hanger
◈  Cabochon
◈  Magnet
◈  Dome paperweight
Meteorite & Tektite
◈  Black Tektite - Single piece
◈  Black Tektite - Loose Lot
◈  Black Tektite - Crafts
Star Ruby & Sapphire
▷  Star Ruby
♢  Opaque Star Ruby
◈  Star Sapphire
Turquoise items
◈  Natural - cabochon
Other
Hot Item
Insect Cabochon Golden Scorpion Oval 18x25 mm on white bottom 2 pieces Lot
USD 12.00
Murder Hornet - 7 Seven Bee Wasp & Hornet Collection Set Education Specimen
USD 35.00
Insect Cabochon Golden Scorpion Oval 12x18 mm on white bottom 2 pieces Lot
USD 12.00
Insect Cabochon Golden Scorpion 38.5 mm Round inner 35 mm on Black 2 pieces Lot
USD 12.00
Insect Cabochon Golden Scorpion Oval 18x25 mm on black bottom 2 pieces Lot
USD 12.00
Picture
New List Item
Turquoise Stone Pear 25x18 mm Flat Cabochon 129 Carat 9 pieces 25.8 gram
USD 31.99
4 Simplified Life Cycle Scorpion & Butterfly & Beetle & Bee Specimen Slide SS75L
USD 32.99
Turquoise Stone Flat Free Form Cabochon 189.5 Carat 3 pieces 37.9 gram Lot A
USD 28.99
Clear Quartz crystal Carving Dolphin 6.6 gram 34x19x12 mm
USD 17.99
Pyrite Stone from China Golden Color Small & Tiny Pieces 200 gram Lot
USD 17.99
Custom Item