| Shipping Back To Top |
- FedEx or DHL for $20.00 only / Delivery 3-4 days / fully insured
- Registered Mail for $6.99 / Delivery 7-14 days / insured for $200.00
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| Payment Options |
- Credit Card
- PayPal
- Western Union
- Bank transfer
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| Guarantee / Certification |
- All gemstones are natural!
- All photos and videos are of the actual gem for sale (No Stock Photos)
- We offer certification from AIGS for $20.00 only (3-5 additional days)
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| Size and Weight Back To Top |
- Gems are always measured in Millimeter (mm)
Compare mm Size with US coins
- Dimensions are given as length x width x depth, except for round stones which are diameter x depth
- Select gems by size, not by weight! Gem varieties vary in density, so carat weight is not a good indication of size
- Note: 1ct = 0.2g
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| Additional Quantities |
- Every item is unique, so you can only order 1 of each item
- However, we often have similar or matching items. If so, we display them on the same gem detail page
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| Clarity Explained Back To Top |
- IF = Loupe Clean - Internally flawless; free of inclusions
- VVS = Almost Loupe Clean - Very, very slight inclusions; inclusions barely seen under 10x magnification
- VS = Eye Clean - Very slight inclusions; inclusions can be seen under 10x magnification
- SI = Slightly included - Small inclusions can be seen with the naked eye
- I1 = Included - Inclusions can be seen with the naked eye
- Transparent = A gemstone having the property of transmitting light without serious diffusion / may have rutile or other inclusions
- Translucent = Allowing light to pass through, but not transparent
- Opaque = Does not allow light to pass through
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| Return Policy |
- All gems have a 30-day inspection period, which begins on the date
of delivery. Gems may be returned for a full refund during this
period.
- Please email us for return authorization code when returning a gem.
- For more details click here
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About Opal Doublet
More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied a folklore. 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 relatively soft, with a rating of
5.5-6.5 on Mohs Scale. Despite its frequent use in rings, opal is a poor choice for a ring stone; it is much better suited to earrings, pins, and pendants.
Major suppliers include Australia, Brazil, Mexico, and the US. Values are normally determined by the presence and nature of color flashes.
An opal doublet consists of a slice of opal glued to a black backing, designed to imitate the appearance of a solid black opal. Adhering the slice of opal to a black backing causes the colour to become much darker and more vibrant. Opal doublets are highly regarded as an inexpensive alternative to solid opals which are very expensive in larger sizes.
