- Make an Offer
Make an Offer Form
Need a better price ? You can try to make an offer.We kindly ask you to provide reasonable offers,no jokes,our prices are "NO FANTASY" prices like at some shops and our discounts are limited.However we are open to do some discounst for certain items or when buying more specimens.If you consider to buy more specimens,you can provide product code numbers in a message.
Important:Please enter correct "Product code" for item you are sending an offer.Code is listed above "Availability" status.
Mineral: GISMONDINE-Ca
Locality: Dobrná, Děčín District, Ústí nad Labem Region, Czech Republic
Dimension (mm): 45 x 24 x 44 mm
Weight (gr): 44 gram
Description / Notes: Gismondin forms in the cavities of basalts colorless, whitish, vitreous, translucent, dipyramidal crystals that are up to 2 mm in size.
- Formula:CaAl2Si2O8 · 4H2O
- Colour:Colorless, white, grayish, bluish white, reddish
- Lustre:Vitreous
- Hardness:4½
- Specific Gravity:2.20 - 2.26
- Crystal System:Monoclinic
- Member of:Gismondine Subgroup > Zeolite Group
- Name:Named gismondine in 1817 for Carlo Giuseppe Gismondi (1762-1824), Italian mineralogist, who previously discovered "zeagonite" - a mixture of gismondine and phillipsite. The suffix was added by the IMA in 2021, after the discovery of gismondine-Sr. The suffix/modifier follows the naming convention for zeolites and denotes the dominant extra-framework cation.
- Type Locality:Capo di Bove, Rome, Metropolitan City of Rome Capital, Lazio, Italy
- IMA Status: Valid Species (Pre-IMA) 1817
Further information in mineralogy databases:
Contacts
Address:
Eva & David Kalat
Pocernicka 330/92,
This is billing addres only,no store nor showroom at above address.
No visist availability nor collecting your orders.All orders are shipped by parcels only !
CZ:Zde neni obchod ani provozovna,jedna se jen o fakturacni adresu.Objednavky pro ceske zakazniky posilame zasadne jen postou,osobni odber neni mozny.Dekujeme za pochopeni.
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How to Reach Us
If we are online,you can contact us via online help/chat.If we do not respond shortly,please contact us via email or via following contact form.We will get back to you as soon as we can.Sometimes we may have some backlogs or busy time and it may take some day for our response.Please remind us,if we do not answer.
- 9.Silicates
- Gismondine-Ca
We automatically include to every Moldavite-Tektite-Meteorite item our company authenticity card/label (Certificate of Authenticity) with our IMCA International Meteorite Collectors Association (ID #2082) and owner signature.You can check our profile here
This form is for UK customers only !
We are not registered for UK VAT and due to this we can not ship lower price parcels under 135 GBP value.If you like to place order under this level,we can list item(s) on Etsy or eBay where vat is cleared by markteplace.
Orders above 135 GBP can be processed in our shop and we can ship it directly.Vat will be charged by UK customs prior delivery.UK buyers are responsible for all import fees and duties.
Use this form to request to list item(s) on marketplace.
IMPORTANT ! We will need to add 10-15% to our original price to cover our seller fees.eBay will charge 20% UK Vat.Please be aware,that final price will be than about 30-35% higher than in our shop.To avoid this higher charge,you can place order above $200 and than get charged just 20% VAT only upon delivery.
Important:Please enter correct "Product code" for item you are sending an offer.Code is listed above "Availability" status.
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We have second shop focusing on Jewelry combined with Moldavites, Meteorites, Tektites, Libyan Desert Glass, Minerals, Crystals and other semiprecious stones.We will be happy to combine shipping from our both stores.