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Help CenterNatural Semi-precious Stones Prehnite Mineral Raw Materials
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Natural semi-precious stones prehnite mineral raw materials
Prduct Knowledge
Prehnite is a silicate mineral, usually they appear in igneous voids, sometimes you can see them on the stalactites. Color from light green grape stone between the gray, as well as white, yellow, red and other colors, but the most commonly green. Both transparent and translucent. Their shape plates, sheets, grape-like, kidney-shaped, radial or massive aggregates like. Good quality grapes can be used for gem stones, known as the Cape of Good Hope this gem emerald.
Physical properties of grapes stone
[Crystal]: orthorhombic.
[Crystalline state]: crystalline aggregates, often plates, sheets, grape-like, kidney-shaped, radial or massive aggregates.
[Cleavage]: a complete set to Medium cleavage: complete cleavage; moderate cleavage, aggregates usually disappear.
[Fracture]: irregular-shaped fracture.
[] Mohs hardness: 6 to 6.5.
[Density]: 2.80g / cm 3 ~ 2.95g / cm 3.
Chemical properties of grapes stone
[Chemical composition]: Ca 2 Al (AlSi 3 O 10) (OH) 2, may contain Fe, Mg, Mn, Na, K and other elements.
Chemistry Category]: silicates.
The optical properties of grapes stone
[Common Color: white, yellow, red meat, green, often pale green.
[Transparency]: transparent to translucent.
[Gloss]: shiny glass.
[Optical characteristics]: Non-homogeneous body, two-axis crystal Masamitsu, often heterogeneous aggregates.
[Refractive index]: 1.616 - 1.649 (+ 0.016, -0.031), often measured as 1.63 point.
[Birefringence]: 0.020 to 0.035, aggregate unpredictable.
[Multicolor]: None.
[UV fluorescence]: None.
[Absorption spectrum]: 438nm weak absorption band.
Our main minerals, rocks, fossils, semi-precious stones, etc all kinds of specimens as well as a variety of original rock of mineral raw materials, all kinds of stone crafts. Our products are from the original natural stone, so there are little differences between various stone, because nature is not a natural stone is the same.
Our service
1.Reply your inquiry in 24 working hours.
2.Experienced staffs answer all your questions.
3.Exclusive and unique solution can be provided to our customer by our well-trained and professional engineers and staffs.
4.We pay attention to the process of production, and will check the outlooking and detailed request before packing.
5.Check the track number after the delivery, keep contact with customer and care about the feedback and supply assistance to avoid inconvenience to the clients.
Q&A:(The questions you may like)
1:How long you can fulfill the order normally?
We have in stock if there is no OEM or big quantity,
According to your order quantity decide the time of delivery,usually 15 working days.
2:What is your minimum order quantity?
1 k
ilogram is available.
3:How long the transportation take?
The time depends on the delivery method.which depends on the transportation,almost 3-7 working days.
4:What is the transportation?
Usually We send the goods by air,small order is best to choose international express,such as DHL,FEDEX,EMS,UPS,TNT,Aramex is better for middle east etc.Big orders are suitable for the delivery by sea.
5:What is the payment terms and payment method you can accept?
30% T/T in advance,Balance payment before delivery.
T/T,Western union,Money gram,Master card,Escrow,Paypal,etc..
6:Where is your company?
Our company is located in Xinxiang City,Henan,Province,China,near to Zhengzhou city and yellow river,that is our mother river,we can show you when we meet you from the Zhengzhou airport.(surely, we can drive to meet you when you plan to visit factory, welcome!)
7:Can you supply me the samples?
Yes, but the samples should be charged,we will return the sample cost after you make the firm order.
8:Can you do OEM&ODM for me?
Yes, we offer OEM&ODM, we can do special service on the product,may your logo, may the color, may the different design,all is up to you.
9:Can you supply other products to me?
No problem,Our main products are prepared slides, microscope glass slides,coverslips,heating mantle,microtomes,microscope accessories,biological specimens, teaching models, liquid nitrogen tank,experiment materials etc.
10:OK, last one,do you have after-sale service?
Sure, we do have, and we do very well during the ordering time,many urgent reply and calling;we can supply 1 year after sale service. And do contact us if you have any question.
Xinxiang Vic Science&Educational Co.,Ltd. located in Xinxiang city, Near to Yellow river and Zhengzhou airport.
Our main products are microscope slides,prepared microscope slides, plastic and wooden slides box,stone specimen,models,microtome, Liquid nitrogen tank, heating mantle, microscopes and Counting chambers,Syringe Filter and other lab instruments.
We have win very good reputation after more than 10 years export experience, we have taken part in many foreign exhibition, such as 2014 Arab Lab.
Our products have been exported to USA, Australia,Russia, Germany,Brazil, Singapore,Malaysia,
Pakistan,Dubai, Iran,Iraq, Dubai, Nigeria, Turkey,Japan and Korean and so on.
Profession,Efficient, Active ,this is the unique feature of our working team,Safe and Fast is the Aim of our logistics team.
Send Inquiry to This Supplier
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