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{name} te trae los millones de historias que nos cuentan los minerales


Georgia Foteinou

Cobalt calcite (also known as cobaltoan calcite or cobaltocalcite) is a rare, vivid pink variety of calcite colored by cobalt impurities. Highly sought after by mineral collectors and holistic practitioners, it is primarily found in oxidized zones of cobalt ore deposits in Morocco and the Democratic Republic of Congo.

Open cuff bangle with a Cobalt Calcite main stone and 2 Rainbow Moonstone Cabochons as secondary stones. Hand - crafted. Adjustable size. Metal: unknown. Width: 3cm. Treatment of Moonstones: foiling. 

Explaining a blue-painted back on a moonstone involves clarifying that the technique, known as foil backing or closed-back setting, is a traditional method used to optimize the stone's natural adularescence (the internal floating light).
The Concept at a Glance: Optical Illusion: Moonstone relies on internal light scattering. A blue or dark background absorbs excess light and prevents it from washing out the stone.
The "Rayleigh Scattering" Effect: The paint acts as a contrast agent. It mimics the deep night sky, causing the stone's natural blue sheen (which results from natural Rayleigh scattering) to pop vividly.
Historical Context: Painting or foiling stones was widely practiced during the Art Nouveau and Art Deco periods by master jewelers like René Lalique to enhance a gem's luminous mystery.
The Structure: Natural moonstone is made of alternating microscopic layers of orthoclase and albite.
The Science: When light hits these microscopic layers, it scatters. Because blue light has a shorter wavelength, it scatters more intensely. This produces the gemstone's famous blue adularescence.
The Paint: Transparent or translucent moonstones are somewhat see-through. If light passes entirely through the stone without reflecting back, the blue flash looks weak or "dead".
The Contrast: By placing a painted blue or dark backing behind a high-domed cabochon cut, the jeweler prevents light from escaping through the bottom of the gem. Instead, the backing absorbs the excess light and reflects only the brilliant blue flash back to the viewer’s eye.
Transparency: High-quality blue moonstones are highly transparent. Jewelers often utilize this backing on these clear specimens to prevent the wearer's skin color from showing through.
Settings: If the stone is in a closed-back bezel, the backing is a deliberate design choice.
Authenticity: the stone itself is real, but the paint serves as a stylistic "stage" to enhance the gem's natural performance..

* NO SHIPPING TO THE USA*

Please note the sizes of the item listed and the description, photos are not the actual size of the item. Photos are enlarged and close ups to show the detail of the item listed. Lighting used to take photos can sometimes alter the colour in the photos and not correspond exactly to the true colour of the item, but we try to minimise differences in colour as much as possible. No extra tests are performed to obtain gemologist certificates, it is very costly and will increase the cost price of the item tremendously. 
No returns are accepted, see all photos before placing a bid. Also note the delivery costs comprise of postage, packaging, insurance and transport and are non refundable. If you are not satisfied with the delivery costs, then please do not bid on the item. If you do bid, then you agree to these costs and I would greatly appreciate it if you do not leave a negative review based on this. Parcel will be sent by registered mail and tracking number supplied. Once the parcel is sent, I cannot control the delivery time or problems that might arise during this process but if there are any problems, I will do my best to assist in any way possible. Deliveries to some countries may take 3 weeks or longer, please keep this in mind when placing a bid. Thank you.

 - Peso total: 31 g

Calcita de cobalto, Piedra lunar arcoíris - Ajorca

Joyería

Precio de reserva

Sin precio de reserva

Livestream

Presupuesto

Fecha final 

mañana

sábado

domingo

hoy 

lunes

martes

miércoles

18 octubre

17 octubre

16 octubre

15 octubre

19 octubre

21 octubre

Ubicación

Italia

Países Bajos

Bélgica

India

Israel

España

Japón

Alemania

Hong Kong

Estados Unidos

Francia

Suiza

Taiwán

Lituania

Irlanda

Turquía

Reino Unido

Bulgaria

Singapur

Austria

Tailandia

Polonia

Mónaco

Letonia

Portugal

Marca

Cartier

Tiffany & Co.

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Pomellato

Other brand

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Handmade

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Tasaki

Vieri

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Chimento

UnoAErre

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Harry Ivens

Chaumet

Mikimoto

Piaget

Niels Erik From

A. Augis

Objeto

Anillo

Pendientes

Collar

Pulsera

Colgante

Collar con colgante

Conjunto de joyas de 2 piezas

Anillo de compromiso

Broche

Conjunto de joyas de 3 piezas

Pulsera Tennis

Anillo de cóctel

Pendientes de botón

Anillo de eternidad

Cadena

Gemelos

Anillo con personalidad

Pendientes largos

Anillo de matrimonio

Ajorca

Colgante de cruz

Pendientes de cóctel

Gargantilla

Tira de cuentas

Pendientes de aro

País de origen

Desconocido

Zambia

Sin origen especificado

Mozambique

Brasil

Tanzania

Madagascar

África

Finlandia

Colombia

Dinamarca

Suecia

Material

Oro amarillo

Oro blanco

Plata

Oro rosa

Platino

Bañado en oro

Acero

Chapado en oro

Metal

Oro de 18 kt

Bronce

Género

Mujer

Unisex

Hombre

Niño

Estado

Nuevo

Excelente estado - apenas usado con mínimos signos de desgaste

Muy buen estado - ligeramente usado con pequeños signos de desgaste

Como nuevo - sin usar

Buen estado - usado con algunos signos de desgaste

Vintage - usado con señales de desgaste

Estado razonable - usado con signos visibles de desgaste

Vintage - utilizado, con signos de posible reparación

Estado nuevo o como nuevo, sin usar, con o sin el embalaje original

Muy bien: signos de desgaste menores

Excelente estado

Buen estado - usado y con pequeños signos de los años y con imperfecciones

Piedra

Diamante

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Piedras preciosas mixtas

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Ópalo

Perla cultivada de agua dulce

Morganita

Turquesa

Zircón

Certificado

Sin informe de laboratorio

International Gemological Institute (IGI)

HRD Antwerp

GEM-TECH Istituto Gemmologico

Gemewizard Gemological Laboratory (GWLab)

Antwerp Laboratory for Gemstone Testing (ALGT)

Gemological Center Israel (GCI)

Gemological Institute of America (GIA)

GFCO Gem Lab

Pearl Science Laboratory

Gem Report Antwerp (GRA)

Istituto Gemmologico Nazionale (IGN)

Lotus Gemology

Bellerophon Gemlab

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Calcita de cobalto, Piedra lunar arcoíris - Ajorca

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