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Frequently Asked Questions

Can I see the gems in person?

Yes, absolutely. We understand that it can be sometimes difficult to get a true and proper impression of a gemstone based solely on the images that you see on your screen. Whilst we make every effort to represent the colour of each and every gem as accurately as possible, there is no substitute for actually seeing and holding the gem in the palm of your palm. This also helps to gauge the size of the stone against your fingers to ensure that the stone is just the right size for what you have in mind.

It is very important to us that you are completely satisfied with any gemstones you purchase from us.  We want you to be happy and comfortable with your choice and to know that that gem will bring you much happiness and good fortune in the years ahead.

Please contact us to arrange an appointment for a private gem viewing at our office.

IMPORTANT: If this is your first time visiting us then for security purposes you may be requested to provide identification beforehand or on arrival at our office. This maybe a driver’s license, passport or something similar.

Are the colours of the gems I see on my screen accurate?

They are as accurate as we are able to make them. We strive to represent each gem as true to life as possible but occasionally due to how some stones react under different lighting situations and the limitations of the cameras and other technology used, it is possible that there might be slight variations between the images you see on the screen and the gem in the hand. There are subtleties of light and colour in gems that can be so very hard to capture, however we do the very best we can. Another thing to remember is that different screens can show colours differently depending on the settings applied.

What we are sure of is that if you like the picture, you will love the gem! The gemstone is always brighter, livelier  and more beautiful then we are able to capture with a photograph. Make an appointment with us to come and see your next gem in the palm of your hand.

How do you grade the clarity of the gems?

When assessing the clarity of our gemstones, we use the following grades :


EYE CLEAN :: This is normally the best clarity grade we will assign to a gem. As the name suggests, it means that to the naked UNAIDED EYE the gemstone appears to be clean of any internal flaws or inclusions. There appears to be no visible faults within the stone that mar the overall appearance of it to the eye.

However please note, that with the aid of a 10x magnifying loupe glass and holding it close up to the eye, very small inclusions may be visible. These are generally so small that you literally need a powerful magnifying glass to see them.

Additionally, when taking photographs of our gems we use very powerful macro focusing lens and these have a tendency to reveal even the tiniest of inclusions within the stone, inclusions that are so small that for all practical purposes they are invisible to the naked unaided eye. Therefore, there may be instances where we have described a gem as being eye clean, and to the unaided eye they certainly appear so, even though on close inspection of the photo you may see some tiny inclusions.

We have nothing to hide and our photographs clearly show this. We do not photoshop out unsightly inclusions like other merchants and we also show the gem from multiple angles. Most merchants will only provide a single photograph which is generally pretty small. We use powerful lenses and provide large images so that you are aware of everything that exists within the stone so as to aid and facilitate online transactions.

You can be confident that when we describe a gem as eye clean, that is exactly what you will receive.


VERY VERY SLIGHTLY INCLUDED :: Nature very rarely works in “perfects” and sometimes there is just the tiniest of natural inclusions inside a gem. More often then not it is a solitary inclusion, one tiny little spot or needle that is all but invisible to the naked eye. However, when we inspect a gem and see that its there, this is the grade we will give the gemstone.

For all practical purposes the gem could be considered eye clean as the inclusion is generally very hard to see unless you know its there and are specifically looking for it. Often these small minor inclusions are desirable as they serve as a sort of fingerprint and can uniquely identify a gemstone as well as indicating that it is truly a natural gemstone created by Mother Earth and not a synthetic or fake.


VERY SLIGHTLY INCLUDED :: Generally assigned to gemstones that have three, four or more small minor inclusions that might be visible to the naked eye upon careful inspection. These usually do not detract from the overall appearance of the stone in any significant way.


SLIGHTLY INCLUDED :: These gems definitely have inclusions that you can see with the naked eye. Usually the intense wonderful colours of the gemstone more then make up for any inclusions that it might have but when looking at the stone you will more then likely see them. Emeralds are one type of gemstone that always has inclusions, its just the degree of them that we take into consideration. With emeralds, it is accepted in the industry that they will have inclusions and therefore this is not considered a negative in any way.


INCLUDED :: When you look at a stone and there are numerous inclusions which are plainly visible to the eye, then we will consider the stone to be included. There are some gemstones, such as emeralds, that are always included and is simply the nature of the type of stone itself. If an emerald wasn’t included and was instead eye clean, then you would be suspicious.

There are other stones as well which must be included in order for it to produce certain effects, like “star” sapphires or “cats-eye” chrysoberyls. Inclusions can also be very attractive in their own right and produce beautiful “picture” stones, like moss-agate and tourmaline or rutile “grass” stones.

I am a jeweller, do you give jewellery trade discounts?

We do offer trade discounts to bona fide jewellers who have an Australian Business Number (ABN) or similar industry registration. Please contact us for more information.


Treatments and Enhancements

Many gemstones are subject to certain enhancements or treatments. These are usually done to improve the colour and quality of the stone and should not necessarily be regarded as a negative. Many of these enhancements are done as a de facto standard within the gemstone trade.

For example, sapphires and rubies are quite often heated to remove certain impurities that might otherwise detract from the beauty of the stone, thus improving the clarity and colour of the stone. Emeralds are generally “oiled” and this is accepted in the trade as a standard practice and is not considered a negative.

Many of these practices have been done since antiquity, such as heating, whilst others are relatively new and have only become possible because of advances in technology.  Just because a gem has been enhanced or treated does not mean that it should be viewed in a lesser light, quite the opposite should be the case.

There are however certain types of treatments that are not very favorable and we personally avoid at King Stone Gems. For instance, be very wary of “glass filled” rubies as these are generally a very poor quality ruby to begin with which are injected with a red glass under great pressure in order to fill the cracks and make the stone more marketable. We do not sell such inferior quality stones.

For a good discussion and explanation of the various types of enhancements and treatments, visit the Gemological Institute of America (GIA) website here :



All gems offered by King Stone Gems are completely natural and untreated or enhanced unless they have one of the following codes listed :

H = Heated.

I = Irradiated

O = Oiled

N = No treatments or enhancements.


Why is one gem worth more then another of the same colour?

You could ask the same thing of two bottles of wine, two items of jewellery, two of anything really, even comparing shares or real estate. Whilst to the casual observer two stones of the same colour might look identical, there are variations and subtleties that to the trained eye or connoisseur can make all the world of difference. Even jewellers who have been in the trade for 30 years or more still struggle to understand the same question.

With gemstones, the most subtle of differences in colour tones and hues, sizes, treatments and even the origin can mean a big difference in price. For instance, we all know that rubies are red and would probably expect that all rubies would be priced the same. But this is not the case, for within the world of rubies the subtle hues of red are graded and evaluated carefully and the best and most desirable of all, is that known as “pigeon blood red”. There is an old saying associated with rubies, “Asking to see the pigeon’s blood is like asking to see the face of God”. These exceptionally coloured rubies were the rarest of the rare and still are. However, and unfortunately, many merchants and online vendors today are, how shall we say, very generous with their descriptions. Any claims to such desirable appellations should be backed up with a certificate from a gem lab.

Size also plays a big part in assigning a value to a gem. Many gems may be relatively common up to a certain size but over that suddenly become quite scarce. Nature is funny like that. Again, taking rubies for example, whilst they are generally considered to be rare, gems over one carat are considered large, over two carats very large… five carats is exceptional and very very rare. The price for these gems as they increase in size goes up accordingly.

Treatments and enhancements are also another factor that will influence the price. Within the mainstream commercial gem and jewellery market place, the vast majority of gemstones that you will see have been treated or enhanced in some way. Many of these treatments are well accepted and industry standard, such as the heating of sapphires and rubies to improve colour and have been done since time immemorial. However, for every hundred or even a thousand stones that are treated to get a certain hue of blue or red, there might be only one gem that Mother Nature has produced which is naturally that colour and has not had any treatments or enhancements done to it. Those perfect stones are very few and all things being equal, a natural untreated gem should demand a premium over a treated gem of the same colour.

These are subtleties and nuances to be sure, and there are merchants out there who will tell you that none of this matters and quickly gloss over all of this.  But it does matter, especially when you are paying good money for something small and precious and particularly if it is for investment purposes. You should expect to get what you are paying for and not get taken advantage of. If you are unsure about any of this or would like to know more, please contact us as we are happy to explain and inform.

Do the gems come with a certificate?

Yes. Every gemstone we sell comes with our King Stone Gems certificate. This is a complementary report which contains the basic information relating to the gemstone described. It is provided so that the customer has a description of the gemstone which they may refer to. The gemstone has been carefully examined using various techniques which may include 10x loupe magnification, refractive index analysis, spectral analysis, specific gravity, polarisation, dichroscope, Chelsea filter and other benchmarks and tools. This identification is the opinion of King Stone Gems and all gemstone are sold in good faith as being that which they are said to be. This report is not a guarantee, valuation or appraisal. The owner of the gem agrees to be fully responsible for the use of this report for trading the gemstone described herein. For a more comprehensive and complete identification of the gemstone we strongly recommend the services of an independent gemmological laboratory. These can be arranged for an additional fee if required.

Many of our gemstones also come with a certificate from an independent gemological laboratory, such as the American Gemological Laboratories (AGL), Gubelin, GemResearch Swisslab (GRS) and Gem Studies Laboratory (GSL). These institutes are highly respected within the industry and we are happy to offer these optional certificates for any gems in our collection. Please contact us for more information and pricing.


Afghanistan Indicolite Blue Tourmaline Emerald Cut in Sydney Australia available from King Stone Gems

Afghan Indicolite Blue Tourmaline Emerald Cut

SKU #130086
10.29 CARATS
18.7X9.3X6.7 MM

Ceylon Cornflower Blue Sapphire available from King Stone Gems in Sydney Australia

Ceylon Cornflower Blue Sapphire Oval

SKU #150259
10.25X7.63X5.72 MM

Ceylon Yellow Sapphire Cushion Available From King Stone Gems Sydney Australia 150321

Ceylon Yellow Sapphire Square Cushion

SKU #150321
10.05 CARATS
11.7X10.9X8.3 MM

Unheated Madagascan Padparadscha Sapphire Oval King Stone Gems 150456

Madagascan Padparadscha Sapphire Oval

SKU #150456
7.05X6.24X4.35 MM

King Stone Gems is the leading retail merchant of loose coloured gemstones in Sydney Australia