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0.4 ct Natural White Red/Green/Blue fire flash Australian Opal

Condition: New With Tags
Price: $22.40

Why buy from Skyjems?

Skyjems is a trusted Canadian seller. I stand behind everything we sell and have been selling on eBay since 1999.

Also, and possibly most importantly, I buy on eBay too, I think like a buyer and I don't want a single customer to have a poor experience with our company.

Please note, ALL orders outside of Canada and USA over $100 total MUST be shipped with Express Shipping

Option. Prices for Express Shipping are given above, if your location does not automatically come up, please contact us for rates.


Stone Details:

Weight : 0.4cts

Flash Color(s) : Red/Green/Blue

Base Color : White

Base Type : Crystal

Measurements : 7x5.05x1.93MM

Cut : Good / Very Good

Finish & Polish : Very Good

Treatment/Enhancement : None

Origin : Australia

Estimate Retail Value : $155.2

The following certificate is NOT included with the stone but can be purchased with the stone for an additional $5.

The following is courtesy of Wikipedia:

Lightning Ridge in New South Wales, is the main source of black opal, opal containing a predominantly dark background (dark-gray to blue-black displaying the play of color).

Precious opal shows a variable interplay of internal colors and even though it is a mineraloid, it has an internal structure. At micro scales precious opal is composed of silica spheres some 150 to 300 nm in diameter in a hexagonal or cubic close-packed lattice. These ordered silica spheres produce the internal colors by causing the interference and diffraction of light passing through the microstructure of the opal.[7] It is the regularity of the sizes and the packing of these spheres that determines the quality of precious opal. Where the distance between the regularly packed planes of spheres is approximately half the wavelength of a component of visible light, the light of that wavelength may be subject to diffraction from the grating created by the stacked planes. The spacing between the planes and the orientation of planes with respect to the incident light determines the colors observed. The process can be described by Bragg's Law of diffraction.

Visible light of diffracted wavelengths cannot pass through large thicknesses of the opal. This is the basis of the optical band gap in a photonic crystal, of which opal is the best known natural example. In addition, microfractures may be filled with secondary silica and form thin lamellae inside the opal during solidification. The term opalescence is commonly and erroneously used to describe this unique and beautiful phenomenon, which is correctly termed play of color. Contrarily, opalescence is correctly applied to the milky, turbid appearance of common or potch opal. Potch does not show a play of color.

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If you REALLY want to know how much you would have to pay in a retail store. Bring in the item(s) you purchased and tell them that you got it/them as a gift/inheritance etc. and want one to match for your daughter /mother/wife/sister/friend and you need them to get one for you to match it. THEN you will see what kind of prices you are looking at to replace your items and you will see how much the item is really worth and I am sure you will be back again and again.

We would very much appreciate 5 star ratings on everything including shipping and handling fees. Please note, the shipping and handling fees are the actual fees incurred and include full insurance.

By bidding on or buying our items, you acknowledge that you have read and agreed to our terms and conditions as stated on our About Me page.


We ship worldwide via Canada Post and FedEx. Your item will be shipped within 2 business days of receipt of payment.

Shipping Cost

  • Canada & USA: $6 for first item + $1 per additional item
  • All other countries: $6 for first item + $1 per additional item
  • Shipping costs include full insurance.
Shipping Timing
Country Postal Delivery Estimate
Canada 3-10 business days
USA 3-15 business days
Western Europe 5-30 business days
Eastern Europe 10-40 business days
Africa 10-40 business days
Asia 10-40 business days
Australia 5-30 business days

Express Shipping

Express Shipping is mandatory for all orders over $100.

Express Shipping Cost
Item Price US/Canada Int'l
$0-$100 $12 Optional $12 Optional
$100-$200 $12 $15.00
Over $100 $1 per each additional $100 of item cost $1 per each additional $100 of item cost

Combined Shipping

  • Additional items may be shipped for an additional $1
  • Canada and USA: Shipping is $6 + $1 per additional item
  • All other countries: Shipping is $6 + $1 per additional item
  • Shipping costs include insurance.

We have a 7-day return policy. If you wish to return your item, please contact us within 7 days of receipt. A 10% restocking fee will apply.

105% Money-Back Guarantee

We offer a 105% money-back guarantee if the item you purchase appraises for less than the value that we state. Appraisal/certificate MUST be done by an independent gemological laboratory. Appraisals from jewelry stores etc. will NOT be honored.

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Items must be returned within 14 days .
Refund will be given as Money back.
Refund policy details:
We stand behind our items. If for any reason you are dissatisfied with our items, simply return the stones to us within 14 days for a refund. Shipping/Handling/Insurance and services (Such as appraisals and sizing) are not refundable.

Destination: Canada

CarrierMethodShipping CostPer additional Item
CUSTOMSurface Post (4-20 Business Days)$6.00$1.00
CUSTOMExpresspost/EMS $500 insurance included (2-5 Business Days)$12.00$1.00
CUSTOMFedEx (Full Insurance Included)$55.00$1.00

Destination: United States

CarrierMethodShipping CostPer additional Item
CUSTOMSurface Post (5-25 Business Days)$6.00$1.00
CUSTOMExpresspost/EMS (4-7 Business Days)$15.00$1.00
CUSTOMExpedited Parcel$35.00$1.00

Destination: United Kingdom & Germany & Japan & Australia

CarrierMethodShipping CostPer additional Item
CUSTOMSurface Post$8.00$1.00
CUSTOMExpedited Post$55.00$1.00
CUSTOMPriority World Package$120.00$1.00

Destination: Asia

CarrierMethodShipping CostPer additional Item
CUSTOMSurface Post$8.00$1.00
CUSTOMPriority World Package (Express)$120.00$1.00
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