Opal Valuations
Opal Valuations
Opal Valuations: $50 per certificate. We provide a free estimate of value to our customers and visitors. However a proper certificate of authenticity and valuation requires a proper physical inspection of the opal to be valued. * Of course giving an estimate of value using a photo is not suitable for insurance purposes.
$50.00
To get a free estimate of value simply email Peter at opalmine.com with some photos of the opal to be valued. Please give a full description of where you purchased the opal, what type of opal you were told it is, how much you paid for it.
To have your opal properly valued you first need to contact us for packaging instructions to have your opal sent to us. It is important to have it packed correctly and also photographed and the photos emailed to us to ensure that nothing is broken or damaged in transit.
Opal Valuations Are a Tricky Business
Opal valuations are a big challenge. Over the years it has been very difficult to arrive at a consistent price for opal because of the nature of the industry. Firstly, up unto relatively recently we did not have an official nomenclature (naming system) for opal and so each opal miner, opal cutter, opal dealer, opal exporter, opal jeweler (jeweller) and opal hobbyist had to make up his or her own mind about what to call this most diverse of gems.
Opal Prices
Opal prices as a result were all over the place, based sometimes on how long or how much it cost to produce the stone and ‘what you could get’ for it in the world of supply and demand. To a large extent this situation still exists because opal does not have a standard valuation system even though we do have a nomenclature. In one way this is good because we don’t have ‘big brother’ telling us what to charge for an opal in the same way as firms like De Beers do with diamonds. Stones like diamonds are usually priced according to what the cartel states rather than because of a shortage or a sufficient supply of the gems.
How is opal priced?
The price of opal is established largely by the people who deal in it from day to day. Buyers who search the mines for opal parcels. The prices in this way find a level because the miner obviously will sell to the highest bidder and this price is translated into finished opal stones and opal jewellery which of course commands a higher price taking into consideration the precious metals it is often associated with such as silver and gold.
Opal Appraisal Software
Having said that, Jewelers concerned with credible opal valuations for insurance loss purposes have benefited greatly by the introduction of the amazing Smart Chart: Opal Appraisal Software which is available on this site. Peter Evens, a man who has had around 40 years experience in the opal industry, in consultation with many other experts has come up with a system that you can use on your computer that takes into consideration all the variances that occur in establishing the value of an opal.
The Basics About Opal Valuations
For the purpose of opal information for the novice visiting this site, basically opal is valued according to it’s statement of color. The more colors of the rainbow existing in the stone, the better. When those same colors have a nice dark background and are clear with large patterns, the stone is more valuable. If it has red in it, all the better as this color is the rarest. Having said that though, opal’s value is often in the eye of the beholder who has a wide choice of preferences to suit different outfits and situations.
Valuation certificates
We provide a service for opal valuations and certificates of authenticity on this site. If you have a stone that needs to be valued for insurance purposes, you can send it to us registered in the mail for photographing and installing in a certificate. These certificates are of course our opinion and not necessarily the opinion of another dealer, so they are always issued with a clause that valuation of any sort whether it be for opal or for diamonds, is not an exact science. Still, it is an attempt to arrive at a value that can be insured. We are able to send your insurance company a copy of these official opal valuations as well if you submit it to us.
21 Responses to Opal Valuations
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In 2007, I purchased the Opal Smartchart software, version 1.1.1. I installed it on my old laptop, which subsequently died a horrible death (harddrive failure). Two laptops later, I would like to start using the software again. I would like to install the software on my new laptop, but can neither remember the password, nor can I find it in any of my email accounts. I must not have saved the installation notes, which came with the software either. I do remember registering the software. I am hoping, that you maintained records and can guide me in re-installing this valuable program.
Thanks so much!
Robert, i will reply to you by email as well as this forum. i will do everything i can to get the details for you. as i recall, each password was issued direct from the supplier who was Peter Evans at the time, but Peter has become ill and no longer produces it. i believe someone else knows about it so i will do the best research possible. expect an email with this mail. best wishes Robert. peter
Hi Peter, thank you again for your valuation of my ring and earrings. I have made an appt with a professional appraiser and will let you know if their assessment matches yours!
No problems Anna, when you get your opals assessed let me know. It will be interesting to compare notes. Best wishes, Peter
Hi Peter, It turns out you were completely correct for both items (I’m sure you don’t remember the items anymore), the earrings were doublets and the ring was a matrix. I sent both back for a full refund thankfully. I was hoping you could take a look at another item for me. This is on auction and the description does not mention whether or not the stones are synthetic. It’s “vintage” so that implies they are real, right? I wanted to see if it was worth bidding on. Thanks so much again!
Here is another shot. It looks like there are backings on some of the stones but that may have been done to make them all the same height? Just a guess.
Anna, i’m pretty sure these are real opals. They dont look synthetic. probably solid crystal opal from Coober pedy. hope that helps. Peter
They look to be nice bright crystals. let me know how much you are paying for it so i can give an opinion. peter
Hi Peter, We are looking for a value on these stones so we have a better idea of what to ask when we sell them. The coin in the pic is a 10 cent piece, I have other pics if you would like to see them up close, Thankyou, nicole
here are some better pics
this one is a finished stone, two different people have given it two quite different values already
the top one and this one have only been rubbed back to reveal their colour
Nicole, its better that we continue the opal conversation by email so just leave your details here http://www.opalmine.com/contact-us/ so that we dont get too many opal images on this page. i will get back to you from this area and take a better look at the opal images if you attach them to emails. You can improve your photography by taking the shots with a quality black velvet (material) background, not black cardboard and you might have to either get a better quality macro camera or if you are not already doing it, use a tripod with a timer on it to avoid vibration. Of course its difficult to be too accurate with a picture but it can give you an approximate. You will get large differences between idea values based on what is to offer locally, and its impossible from an opal photo to get the full picture.
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Nicole, Wow! You have some black opal carvings from Lightning Ridge and a lovely crystal opal probably but not necessarily from Coober Pedy. They are fantastic! I have coined a word that i think describes them best. I call them ‘undulates’ because, like the mountains they undulate. In my opinion opals like this have an added attraction because they get away from the conventional way of cutting and polishing opal. So much beautiful material was lost in years past because of grinding away color to force the natural piece to fit the accepted ‘standard’ of a high domed oval opal. I would be pleased to offer you a suggested price for the opal but keep in mind that like all opal valuations, it is only an estimate because opal prices are not forced by means of a cartel such as is the case with diamonds and other commodities. Opal prices are established by supply and demand. When the opal demand is high and the opal supply is low, the price goes up, and the opposite. However other things influence the price as well. If the world economy is low and tourism is also low, the demand decreases and even though at present opal supplies are possibly at their lowest ever because the opal fields have all but run out, because a lot of people don’t have heaps of money, the price becomes low as well. Anyway, please leave me a message in the contacts section of this site and we will communicate by email to give you some better ideas about prices. Then we can post any relevant information at this forum for the benefit of all if you give permission. Best wishes Nicole, Peter
Hello Peter,I was given this ring by a relative. It is marked on the inside1/30-14k R G P SHANK ORLANDO. I would like to know the value of it. Best, Leslie
Leslie, you will have to take some better quality pictures using a digital camera with macro (close up) facility, because i cant see by this picture, what the stone actually is. It could be opal but i cannot tell. It seems to have the colors of opal but it has the appearence of being a composite opal. It also looks a bit more like a mexican agate than an opal but like i say, i cant tell you. As far as the ring itself is concerned, by itself without the opal, I dont know what 1/30 applies to unless its a date or a casting label (one out of 30 for example) but the 14k refers to the Karet of the gold. Or, the percentage of 24karet. 14 out of 24, which means the gold content in the ring is 58% according to my calculation. the remaining percent is a mixture of silver, copper. Here is a more accurate summary of your question.
U.S.A. and British Gold Markings
• 24K is pure gold metal without any other metal added
• 18K has 18 parts of pure gold and 6 parts of other metals which means it’s 75% pure
• 14K has 14 parts of pure gold and 10 parts of other metals which means it’s 58.3% pure
• 12K has 12 parts of pure gold and 12 parts of other metals which means it’s 50% gold
• 10K has 10 parts of pure gold and 14 parts of other metals which means it’s 41.7% pure
• Sterling Silver is 92.5% pure silver and 7.5% usually copper. It can be marked SS or Sterl Silv or 925
British Gold Markings.
• 18K has 18 parts of pure gold and 6 parts of other metals which means it’s 75% pure
• 9K gold has 9 parts of pure gold and 15 parts of other metals which means it’s 37.5% pure
• Sterling Silver is 92.5% pure silver and 7.5% usually copper. It can be marked SS or Sterl Silv or 925
European Gold Markings
In Europe, numbers instead of parts of 24 are used so:
• 18K is 75% pure so it’s marked as 750
• 14K is 58.3% pure so it’s marked as 583
• 10K is 41.7% pure so it’s marked as 417
• Sterling Silver is 92.5% pure silver and 7.5% usually copper. Usually marked 925
Why are other Metals added to gold and silver?
Palladium or nickel is added to make white gold. Copper produces pink or rose colored tint. Silver adds a little green to the yellow. Various metals are added to make the gold more economical and tougher for general purpose use. A pure gold ring for example bends quickly and can easily allow claws to dislodge and lose a precious stone.
Thank you for all the great information. Here is a better photo. This ring is also very old.Best, Leslie
Leslie, i have not seen a natural opal or gemstone like this. I believe that it is an opal likeness, manufactured with some sort of polyester using what looks like small flowers or other material to give an opal appearance. This may be totally incorrect and i am only making this suggestion because i don’t really know. I would have to actually have it in front of me to assess it properly but i would say that an experienced jeweler, even if he doesnt know much about opal, could give an opinion on that. I have included some extra information below ont the subject of gold that you might find interesting. Thanks for your interesting question. It has inspired a great conversation on this subject.
Just for the benefit of all opalmine.com readers, gold is weighed in troy oz’s, not avoirdupois (french for ‘have weight’) which is the old british system inherited from the Romans, still used in many parts of the world where there are 16 oz in one pound. A troy oz has 12 oz in it’s pound. There are 20 pennyweights in a troy oz. To bring this into every day terms there are 31.1 grams in a troy oz. The average small ring is around 2 to three grams. Larger rings around 5 to 7 grams and gents rings or very large ladies rings are around 9 to 12 grams, with extremely heavy ones possibly up to 20 grams and more. Of course you have to take into consideration the karet of the gold in assessing its value. Incidentally the word Karet, or Caret is a weight that originated in ancient times when the carob seed (Arabic ‘qirat’ meaning ‘bean’ or ‘seed’), because of it’s acceptably consistant weight, was used for measuring small things.
I would like an approximate value of this ring. It was purchased approximately 5 yrs ago at the opal mine in Australia. I am interested in selling it.
Thank you
Kelley, did i get back to you about your opal ring? Please leave a message here if not. I have been missing some reminders of late. Pleased to help if i can. Peter