Turquoise / Nishapur Ring / Cabochon / new- 9.3 g - (1)
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Selected by Antonio Rapisarda
Holds a master’s in chemistry with 25 years’ experience in minerals consulting.
Estimate € 150 - € 200
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Ring with Nishapur turquoise cabochon set in 925 sterling silver, weight 9.3 g (46.5 ct), ring size U 60 (UK S, US 9.1, FR 20), originating from Persia (Nishapur).
AI-assisted summary
Description from the seller
Nishapur turquoise ring / cabochon / new
Cast in 925 sterling silver
Weight: 46.5 ct / 9.30 g !!
24.0 mm x 16.7 mm
Brand new and unworn
Ring size
U 60
UK S
US 9.1
Fr 20
Inner diameter: 19.1 mm
Turquoise is a rare, water-containing copper-aluminium phosphate from the mineral class of 'phosphates, arsenates, and vanadates,' with the chemical composition CuAl6(PO4)4(OH)8·4H2O. Instead of aluminium, iron can also be incorporated into the crystal structure as Fe3+ (diadochy), which is why the chemical formula is often also given as Cu(Al,Fe)6(PO4)4(OH)8·4H2O.
Turquoise crystallizes in the triclinic crystal system and is the namesake of a group of minerals with the same structure but different compositions, known as the turquoise group, which includes Faustite, Chalkosiderite, Aheylite, and Planerite.
In nature, turquoise typically forms in grape-like or earthy-massive mineral aggregates. Crystals visible to the naked eye are very rare and are usually only a few millimeters in size with a prismatic to needle-like habit. The characteristic blue-green color of turquoise gives it its name.
Turquoise is used exclusively for jewelry stones.
Shipping as insured registered mail.
Seller's Story
Dipl. Geol. Tim Güldenpfennig
Translated by Google TranslateNishapur turquoise ring / cabochon / new
Cast in 925 sterling silver
Weight: 46.5 ct / 9.30 g !!
24.0 mm x 16.7 mm
Brand new and unworn
Ring size
U 60
UK S
US 9.1
Fr 20
Inner diameter: 19.1 mm
Turquoise is a rare, water-containing copper-aluminium phosphate from the mineral class of 'phosphates, arsenates, and vanadates,' with the chemical composition CuAl6(PO4)4(OH)8·4H2O. Instead of aluminium, iron can also be incorporated into the crystal structure as Fe3+ (diadochy), which is why the chemical formula is often also given as Cu(Al,Fe)6(PO4)4(OH)8·4H2O.
Turquoise crystallizes in the triclinic crystal system and is the namesake of a group of minerals with the same structure but different compositions, known as the turquoise group, which includes Faustite, Chalkosiderite, Aheylite, and Planerite.
In nature, turquoise typically forms in grape-like or earthy-massive mineral aggregates. Crystals visible to the naked eye are very rare and are usually only a few millimeters in size with a prismatic to needle-like habit. The characteristic blue-green color of turquoise gives it its name.
Turquoise is used exclusively for jewelry stones.
Shipping as insured registered mail.
Seller's Story
Dipl. Geol. Tim Güldenpfennig
Translated by Google TranslateDetails
Number of items
1
Main Mineral
Turquoise / Nishapur
Mineral Form
Ring / Cabochon / new
Supplement
925. Sterling silver
Weight
9.3 g
Country of Origin
Persia
Sold by
GermanyVerified
protop
Rechtliche Informationen des Verkäufers
- Unternehmen:
- Tim Güldenpfennig
- Repräsentant:
- Tim Güldenpfennig
- Adresse:
- Tim Güldenpfennig
Hegelstr. 32
72108 Rottenburg
GERMANY - Telefonnummer:
- +4915756630304
- Email:
- tigue@gmx.de
- USt-IdNr.:
- DE246631347
AGB
AGB des Verkäufers. Mit einem Gebot auf dieses Los akzeptieren Sie ebenfalls die AGB des Verkäufers.
Widerrufsbelehrung
- Frist: 14 Tage sowie gemäß den hier angegebenen Bedingungen
- Rücksendkosten: Käufer trägt die unmittelbaren Kosten der Rücksendung der Ware
- Vollständige Widerrufsbelehrung
Disclaimer
It is believed that certain gemstones and minerals have beneficial health and spiritual properties. However, using or wearing gemstones or minerals does not mean that you can treat, cure or prevent any disease. Please consult your health care professional for information on health care issues and do not stop any medications or courses of treatment, without first consulting your health care professional. The use of gemstones or minerals as a wellness therapy is one of personal choice. While stones or crystals have been used historically to relieve or prevent symptoms, the objects sold on our website offer no guarantee of results. Therefore, Catawiki cannot guarantee or be held liable for the effectiveness of these objects sold herein.
It is believed that certain gemstones and minerals have beneficial health and spiritual properties. However, using or wearing gemstones or minerals does not mean that you can treat, cure or prevent any disease. Please consult your health care professional for information on health care issues and do not stop any medications or courses of treatment, without first consulting your health care professional. The use of gemstones or minerals as a wellness therapy is one of personal choice. While stones or crystals have been used historically to relieve or prevent symptoms, the objects sold on our website offer no guarantee of results. Therefore, Catawiki cannot guarantee or be held liable for the effectiveness of these objects sold herein.
