You have not bid on this auction.
4.36 Cts Natural Mexican Yellowish Orange Fire Opal 1$ NR
- SKU
- Dimensions (mm)
- 12.000 x 8.000 x 6.000mm
- Weight (cts)
- 4.000
- Colours
-
GEMEX
Natural Fire Opal (3976)
Weighs 4.36 cts and of dimensions 11.9 x 7.7 x 5.7 mm.
This is a Natural Orange Opal which is Unheat Untreated.
Origin is Mexico & Color is Yellowish Orange.
Origin and Properties
Opals stand in a class by themselves. More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied folklore. They are both one of the luckiest and unluckiest gems a person can own. They are so unique, they have their own descriptive vocabulary. Opals are also the most delicate gems commonly worn. They require special care to insure their health and longevity. Opal's fire was long thought to be the result of iridescence. However, with the advent of scanning electron microscopes, we now know that it is a result of diffraction.
Opal is an amorphous form of silica, (SiO2.nH2O) chemically similar to quartz, (SiO2) but containing 3% to 21% water within the mineral structure. Gem grade opals are usually 6% to 10% water content.
Volcanic ash gives black opal its color, but inclusions have nothing to do with the play of color. That is due entirely to the tiny spheres. They must be smaller than 1500 angstroms for blue and violet colors, but no larger than 3500 angstroms to produce oranges and reds. To put that in perspective, 20,000 spheres are about the size of the period at the end of this sentence. Opal grows by filling in cavities, regardless of their shape. Hence, we have many pseudomorphs, materials with shapes that are unrelated to the chemical content. The most common are opalized wood and seashells.
Black opal, precious opal with black body color. Also used for black potch covered with thin layer of crystal opal that lets the black under layer show through.
Semiblack, or gray opal, precious opal with dark body color.
Light opal is in between semi-black and white.
White opal, precious opal with white or very light body color.
Crystal opal, transparent to semitransparent, colorless body with play of color.
Doublets and Triplets make use of opal that is too thin to use as a solid gemstone. A doublet is a thin layer of precious opal glued to a black base. A triplet adds a transparent, quartz cap.
Black crystal opal, transparent to semitransparent opal, with dark body color and play of color.
Fire opal, translucent to transparent, with yellow, orange, or red body color. May or may not have play of color. Also called Mexican opal or Sun opal.
Boulder opal, a thin seam of precious opal on ironstone matrix. Since this is a natural occurrence, its value is higher than that of a man made doublet. The ironstone is very dark, which makes the fire stand out and gives a close resemblance to black opal.
Matrix opal consists of thin seams or spots of precious opal in matrix. The matrix is usually dark ironstone, but occasionally a light sand stone. Also called Mass opa
-------------------------------------------------------------------------------------------------------------------------------------------
Shipping / Handling / Retuns
5.50$ for Registered Post - Trackable (delivery 3 weeks). 25$ for DHL Express - Trackable (delivery 3 days).
Payments for 5 or more items in one order will be FREE UPGRADE to DHL Express Shipping (few countries exempted).
No Combined Shipping Rebate for NR Auctions. For Store / BIN auctions - Only one Shipping Fee charged per shipment.
No HANDLING Charges.
Insured Shipments will be done either via Registered Post or DHL Express (depending on delivery country).
Hassle Free Returns - 14 days Inspection Period upon Receipt - Return Postage to be paid by the Buyer.
- SKU
- Dimensions (mm)
- 12.000 x 8.000 x 6.000 mm
- Weight (cts)
- 4.000
- Colours
-
GEMEX
Natural Fire Opal (3976)
Weighs 4.36 cts and of dimensions 11.9 x 7.7 x 5.7 mm.
This is a Natural Orange Opal which is Unheat Untreated.
Origin is Mexico & Color is Yellowish Orange.
Origin and Properties
Opals stand in a class by themselves. More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied folklore. They are both one of the luckiest and unluckiest gems a person can own. They are so unique, they have their own descriptive vocabulary. Opals are also the most delicate gems commonly worn. They require special care to insure their health and longevity. Opal's fire was long thought to be the result of iridescence. However, with the advent of scanning electron microscopes, we now know that it is a result of diffraction.
Opal is an amorphous form of silica, (SiO2.nH2O) chemically similar to quartz, (SiO2) but containing 3% to 21% water within the mineral structure. Gem grade opals are usually 6% to 10% water content.
Volcanic ash gives black opal its color, but inclusions have nothing to do with the play of color. That is due entirely to the tiny spheres. They must be smaller than 1500 angstroms for blue and violet colors, but no larger than 3500 angstroms to produce oranges and reds. To put that in perspective, 20,000 spheres are about the size of the period at the end of this sentence. Opal grows by filling in cavities, regardless of their shape. Hence, we have many pseudomorphs, materials with shapes that are unrelated to the chemical content. The most common are opalized wood and seashells.
Black opal, precious opal with black body color. Also used for black potch covered with thin layer of crystal opal that lets the black under layer show through.
Semiblack, or gray opal, precious opal with dark body color.
Light opal is in between semi-black and white.
White opal, precious opal with white or very light body color.
Crystal opal, transparent to semitransparent, colorless body with play of color.
Doublets and Triplets make use of opal that is too thin to use as a solid gemstone. A doublet is a thin layer of precious opal glued to a black base. A triplet adds a transparent, quartz cap.
Black crystal opal, transparent to semitransparent opal, with dark body color and play of color.
Fire opal, translucent to transparent, with yellow, orange, or red body color. May or may not have play of color. Also called Mexican opal or Sun opal.
Boulder opal, a thin seam of precious opal on ironstone matrix. Since this is a natural occurrence, its value is higher than that of a man made doublet. The ironstone is very dark, which makes the fire stand out and gives a close resemblance to black opal.
Matrix opal consists of thin seams or spots of precious opal in matrix. The matrix is usually dark ironstone, but occasionally a light sand stone. Also called Mass opa
-------------------------------------------------------------------------------------------------------------------------------------------
Shipping / Handling / Retuns
5.50$ for Registered Post - Trackable (delivery 3 weeks). 25$ for DHL Express - Trackable (delivery 3 days).
Payments for 5 or more items in one order will be FREE UPGRADE to DHL Express Shipping (few countries exempted).
No Combined Shipping Rebate for NR Auctions. For Store / BIN auctions - Only one Shipping Fee charged per shipment.
No HANDLING Charges.
Insured Shipments will be done either via Registered Post or DHL Express (depending on delivery country).
Hassle Free Returns - 14 days Inspection Period upon Receipt - Return Postage to be paid by the Buyer.
Shipping provider | Shipping to Thailand | Shipping to rest of world |
---|---|---|
Standard Shipping - Tracked | $5.00 / 7 days | $6.00 / 21 days |
Thailand
Standard Shipping - Tracked is discounted to $12.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $12.00 on orders with 2 or more items
|
||
DHL | $30.00 / 2 days | $30.00 / 4 days |
Thailand
DHL is discounted to $40.00 on orders with 2 or more items
Rest of the world
DHL is discounted to $40.00 on orders with 2 or more items
|
-
Positive
I love the opal I received,,, (FIREOPALBEADS), was not only willing to work with me, but were quick in response, and understanding. I would recommend them to any who finds an opal they like from their items to make a purchase. Tom Nobles.
-
Positive
good stone
-
Positive
Paid and shipped - no feedback left after 60 days
-
Positive
Good looking matched pair of Opals!
-
Positive
top quality! thanks
-
gemexreplied
▀▄▀░▒▓█▀Extremely very professional Gemrock buyer! Highly recommended▀▄▀
-
Positive
-
gemexreplied
❤.•:*¨¨*:•.❤ Thank you! ❤.•:*¨¨*:•.❤ (✿◠‿◠)
Why are users outbidding themselves?
When a bid is placed, this is the maximum amount a user is willing to bid for the product. Our system will then automatically bid on that users behalf, incrementally increasing the bid to maintain their position as the highest bidder, up to the specified maximum.
When there is an icon indicating 'Auto Bid,' it means our system is actively placing bids for the user based on their maximum bid. This may appear as if users are outbidding themselves, but it's simply a result of the system updating the bid to reflect the users maximum limit.