Opals
Gemstones
Jewelry
Coins
No has pujado en esta subasta.
$301.00
Oferta actual
42
Ofertas
Cerrado
25/07/2023 06:30 pm
42
910
20
16.77CT~BOLIVIAN AMETRINE~CUSTOM CUT
42
910
20
- SKU
- Dimensiones (mm)
- 17.500 x 16.900 x 12.100mm
- Peso (cts)
- 16.770
- Treatment
- No Treatment
- Tipo
- Faceted
- Colores
-
Natural Ametrine
Ametrine is a variety of bi-color quartz that has zones of amethyst (purple) and citrine (golden yellow) in contact with one another in a single crystal. This material is known by other less-frequently used names including: "amethyst-citrine," "trystine," "bicolor amethyst," "bi-color quartz," and "bolivianite." The bolivianite name is a response to the material being designated as the national gemstone of Bolivia. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Natural Ametrine is a rare gemstone with a finite supply that is produced in commercial quantities at only one mine in the world. The color of the zones visible within ametrine is due to differing oxidation states of iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.
*CARE (Ametrine)*
Ultrasonic: Usually safe
Steamer: Risky
Heat: Fair; color change may occur with heat
Chemicals that harm: Hydrofluoric acid, ammonium fluoride can damage.
Best; Warm, soapy water and then gently clean with a soft brush. Dry with a soft cloth or air dry.
*CLARITY CHART*
IF – Internally flawless; free of inclusions
VVS – Very, very slight inclusions; microscopic inclusions barely
seen under a loupe with 10x magnification
VS – Very Slight inclusions; visible inclusions that can be seen under magnification and sometimes also with the unaided eye.
SI – Small inclusions; inclusions that are obvious under magnification and to the unaided eye.
I – Heavy or large inclusions obvious to the naked eye
All gemstones listed here have been cut by myself. I work exclusively with a precision machine when faceting gemstones. This allows extra brilliance and appeals only seen in precision-cut gems. Gemstones are cut at their correct refractive index using digital precision, this facilitates making the correct facet angles allowing the maximum amount of light to enter and reflect back up through the table. This allows optimum brilliance according to each gemstone's individual refractive index. Special care in polishing ensures that the faceted gem is showcased in all its brilliance. The introduction of precision faceting machines has revolutionized the art of gem cutting allowing the gem cutter to unveil the inner beauty of every single gemstone like it has never been done before. The cut of a gem is one of the main values of a gemstone and each gemstone requires special attention in order to unveil its potential beauty. If you're looking for that extra special stone, I hope you find it here.
Sincerely,
Doug
"Light reflects off of Jewels,
But, "It" comes from above."
- Grading: IF
- Design: Custom
- Color: Purple, Yellow, Multicolored
- Origin: Bolivia (Anahi Mine)
- Treatment: None at all
- Hardness: 7
- Refractive Index: 1.54-1.55
- Cut: Custom cut by Doug (2X Award-winning gemstone faceter/USFG Certified Grand Master Faceter)
Ametrine is a variety of bi-color quartz that has zones of amethyst (purple) and citrine (golden yellow) in contact with one another in a single crystal. This material is known by other less-frequently used names including: "amethyst-citrine," "trystine," "bicolor amethyst," "bi-color quartz," and "bolivianite." The bolivianite name is a response to the material being designated as the national gemstone of Bolivia. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Natural Ametrine is a rare gemstone with a finite supply that is produced in commercial quantities at only one mine in the world. The color of the zones visible within ametrine is due to differing oxidation states of iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.
*CARE (Ametrine)*
Ultrasonic: Usually safe
Steamer: Risky
Heat: Fair; color change may occur with heat
Chemicals that harm: Hydrofluoric acid, ammonium fluoride can damage.
Best; Warm, soapy water and then gently clean with a soft brush. Dry with a soft cloth or air dry.
*CLARITY CHART*
IF – Internally flawless; free of inclusions
VVS – Very, very slight inclusions; microscopic inclusions barely
seen under a loupe with 10x magnification
VS – Very Slight inclusions; visible inclusions that can be seen under magnification and sometimes also with the unaided eye.
SI – Small inclusions; inclusions that are obvious under magnification and to the unaided eye.
I – Heavy or large inclusions obvious to the naked eye
All gemstones listed here have been cut by myself. I work exclusively with a precision machine when faceting gemstones. This allows extra brilliance and appeals only seen in precision-cut gems. Gemstones are cut at their correct refractive index using digital precision, this facilitates making the correct facet angles allowing the maximum amount of light to enter and reflect back up through the table. This allows optimum brilliance according to each gemstone's individual refractive index. Special care in polishing ensures that the faceted gem is showcased in all its brilliance. The introduction of precision faceting machines has revolutionized the art of gem cutting allowing the gem cutter to unveil the inner beauty of every single gemstone like it has never been done before. The cut of a gem is one of the main values of a gemstone and each gemstone requires special attention in order to unveil its potential beauty. If you're looking for that extra special stone, I hope you find it here.
Sincerely,
Doug
"Light reflects off of Jewels,
But, "It" comes from above."
- SKU
- Dimensiones (mm)
- 17.500 x 16.900 x 12.100 mm
- Peso (cts)
- 16.770
- Treatment
- No Treatment
- Tipo
- Faceted
- Colores
-
Natural Ametrine
Ametrine is a variety of bi-color quartz that has zones of amethyst (purple) and citrine (golden yellow) in contact with one another in a single crystal. This material is known by other less-frequently used names including: "amethyst-citrine," "trystine," "bicolor amethyst," "bi-color quartz," and "bolivianite." The bolivianite name is a response to the material being designated as the national gemstone of Bolivia. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Natural Ametrine is a rare gemstone with a finite supply that is produced in commercial quantities at only one mine in the world. The color of the zones visible within ametrine is due to differing oxidation states of iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.
*CARE (Ametrine)*
Ultrasonic: Usually safe
Steamer: Risky
Heat: Fair; color change may occur with heat
Chemicals that harm: Hydrofluoric acid, ammonium fluoride can damage.
Best; Warm, soapy water and then gently clean with a soft brush. Dry with a soft cloth or air dry.
*CLARITY CHART*
IF – Internally flawless; free of inclusions
VVS – Very, very slight inclusions; microscopic inclusions barely
seen under a loupe with 10x magnification
VS – Very Slight inclusions; visible inclusions that can be seen under magnification and sometimes also with the unaided eye.
SI – Small inclusions; inclusions that are obvious under magnification and to the unaided eye.
I – Heavy or large inclusions obvious to the naked eye
All gemstones listed here have been cut by myself. I work exclusively with a precision machine when faceting gemstones. This allows extra brilliance and appeals only seen in precision-cut gems. Gemstones are cut at their correct refractive index using digital precision, this facilitates making the correct facet angles allowing the maximum amount of light to enter and reflect back up through the table. This allows optimum brilliance according to each gemstone's individual refractive index. Special care in polishing ensures that the faceted gem is showcased in all its brilliance. The introduction of precision faceting machines has revolutionized the art of gem cutting allowing the gem cutter to unveil the inner beauty of every single gemstone like it has never been done before. The cut of a gem is one of the main values of a gemstone and each gemstone requires special attention in order to unveil its potential beauty. If you're looking for that extra special stone, I hope you find it here.
Sincerely,
Doug
"Light reflects off of Jewels,
But, "It" comes from above."
- Grading: IF
- Design: Custom
- Color: Purple, Yellow, Multicolored
- Origin: Bolivia (Anahi Mine)
- Treatment: None at all
- Hardness: 7
- Refractive Index: 1.54-1.55
- Cut: Custom cut by Doug (2X Award-winning gemstone faceter/USFG Certified Grand Master Faceter)
Ametrine is a variety of bi-color quartz that has zones of amethyst (purple) and citrine (golden yellow) in contact with one another in a single crystal. This material is known by other less-frequently used names including: "amethyst-citrine," "trystine," "bicolor amethyst," "bi-color quartz," and "bolivianite." The bolivianite name is a response to the material being designated as the national gemstone of Bolivia. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Natural Ametrine is a rare gemstone with a finite supply that is produced in commercial quantities at only one mine in the world. The color of the zones visible within ametrine is due to differing oxidation states of iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.
*CARE (Ametrine)*
Ultrasonic: Usually safe
Steamer: Risky
Heat: Fair; color change may occur with heat
Chemicals that harm: Hydrofluoric acid, ammonium fluoride can damage.
Best; Warm, soapy water and then gently clean with a soft brush. Dry with a soft cloth or air dry.
*CLARITY CHART*
IF – Internally flawless; free of inclusions
VVS – Very, very slight inclusions; microscopic inclusions barely
seen under a loupe with 10x magnification
VS – Very Slight inclusions; visible inclusions that can be seen under magnification and sometimes also with the unaided eye.
SI – Small inclusions; inclusions that are obvious under magnification and to the unaided eye.
I – Heavy or large inclusions obvious to the naked eye
All gemstones listed here have been cut by myself. I work exclusively with a precision machine when faceting gemstones. This allows extra brilliance and appeals only seen in precision-cut gems. Gemstones are cut at their correct refractive index using digital precision, this facilitates making the correct facet angles allowing the maximum amount of light to enter and reflect back up through the table. This allows optimum brilliance according to each gemstone's individual refractive index. Special care in polishing ensures that the faceted gem is showcased in all its brilliance. The introduction of precision faceting machines has revolutionized the art of gem cutting allowing the gem cutter to unveil the inner beauty of every single gemstone like it has never been done before. The cut of a gem is one of the main values of a gemstone and each gemstone requires special attention in order to unveil its potential beauty. If you're looking for that extra special stone, I hope you find it here.
Sincerely,
Doug
"Light reflects off of Jewels,
But, "It" comes from above."
| Proveedor de envío | Envío a: país | Envíos al resto del mundo |
|---|---|---|
| Standard Shipping - Tracked | $7.00 / :días días | $19.00 / :días días |
dougpamgems
Welcome to DougPamGems. As a professional cutter specializing in opals (Topshelfopals), I have now ventured into the world of "other" gemstones. Precision faceting is my new-found love. As with opals, my goal is to reveal as much whimsical wonder and beauty as a piece of rough can produce. It is my goal to allow these heavenly treasures to lead and guide me, to shape and polish these colorful rustic stones into pure eye candy, to allow them to come into fruition as objects of beauty to pleasure and inspire others like myself. As an award-winning faceter and member of the USFG, You can rest assured that your gemstone has been cut and polished with love, excitement, anticipation and professional skill.
Sincerely,
Doug
:Ciudad, País
Verificado
98 de comentarios
-
PositivoThanks again Doug!!
-
Positivo
Thanks again Doug!!
-
Positivo
A Man who gives us wonderful stones! We thank you!
-
Positivo
Very beautiful gem!
-
Positivo
Paid and shipped - no feedback left after 100 days
Historial de ofertas (42)
kelvin30
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iona
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$299.00
kelvin30
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iona
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$292.00
kelvin30
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$285.00
kelvin30
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iona
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$273.00
kelvin30
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iona
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$261.00
kelvin30
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$249.00
kelvin30
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$227.00
kelvin30
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$205.00
kelvin30
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$175.00
kelvin30
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$158.00
kelvin30
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kelvin30
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$100.00
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$70.00
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$63.00
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$61.00
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$39.00
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$17.00
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Oferta automática
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$15.00
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$12.00
hace 1 año
$8.00
hace 1 año
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$2.00
hace 1 año
$1.00
¿Por qué los usuarios se superan a sí mismos?
Cuando se realiza una oferta, esta es la cantidad máxima que un usuario está dispuesto a ofertar por el producto. Luego, nuestro sistema ofertará automáticamente en nombre de ese usuario, aumentando gradualmente la oferta para mantener su posición como el mejor postor, hasta el máximo especificado.
Cuando hay un ícono que indica "Oferta automática", significa que nuestro sistema está realizando ofertas activamente para el usuario en función de su oferta máxima. Esto puede parecer como si los usuarios se estuvieran superando a sí mismos, pero es simplemente el resultado de que el sistema actualiza la oferta para reflejar el límite máximo de los usuarios.
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El programa Gemstone Sheriff permite a nuestros miembros solicitar una auditoría de cualquier producto, que se completa con una :cualificación independiente que evalúa la precisión de la descripción y las imágenes del artículo.
Detalles de envío
Envío:
$19.00 :cuenta días a través de :proveedor
Se envía desde:
United States of America
Opciones de pago
Descripción general
Tipo de listado :
Standard
ID del Producto :
2210769
Precio inicial : $1
Empieza : 11th July 2023 06:30 pm PDT
Finaliza : 25th July 2023 06:30 pm PDT
* Todos los precios están en :moneda
