All of our diamonds are processed via the Kimberley Process Certificate (KPC) System
In Australia, generally 3 to 5 days, depending on your location. Overseas, it takes around one week to obtain and complete KPC and Customs Clearance’s. Normal overseas postage times are from one week to ten days. Tracking and Insurance are part of all out posted parcels
Website Banking Facilities. Direct Deposits. For local buyers: cash is acceptable.
Within Australia an Australia Post Parcel costs $12.15 with Signature on Delivery $2.95 and insurance costing $2.50 per $100 of value up to $5000.00 Overseas Packages we use Australia Post Express service and pass on the actual costs.
We are holders of a Australian Government Department of Industry Occasional Diamond Exporters Licence and are inspected once a year by this department. We request for the Mine of Origin to be on our Importing KPC and Invoices. Rough diamonds have very distinctive and easily detectable surface markings that identify their country of origin.
All the measurements are in millimetres using verniers and a stainless steel ruler.
Height measured from North to South
Four Side Measurements, Measured from 1 to 4.
Height from North down to M
Four base Measurements from 1 to 4
The three sides measured and the Depth
Length x Width x Thickness
Yes, the purpose of cutting is to allow natural light in, which then reflects off the cut surfaces, enhancing the shine and brilliance. That’s why the cut is a very important factor when buying a polished stone. However each rough we sell has its own shine and lustre. They are certainly not dull!
Not as yet, the rarity and the high prices are a little daunting. However, if the right stone appears I’ll certainly be bidding.
This is one advantage of buying roughs – it is your choice – versus buying a pre-set stone from a shop window. You may already have one or two jewellers in mind. If not, I would look for an individual designer or jeweller and check out their work via their web site or retail outlet. Also you need to feel comfortable with the designer because it is a joint project, and you’ll both have ideas. Good designers will have good ideas and know what’s possible.
Only around 30% of diamonds mined have good crystal shapes suitable for setting into jewellery. The rest have various faults, cracks, ill-formed shapes and lots of inclusions (black specks of non-diamond material). However, many of these can still be cut and polished and their faults simply removed. Diamonds that are not worth cutting are crushed and used for industrial drill bits, grinding disks etc. These days most of the world’s industrial diamonds are manufactured. Simply put, a very low quality rough diamond looks exactly as it sounds. It could be a hard black cokey mass with no distinct shape, bad colour, cracks and deep faults. The lowest classification used when sorting roughs is ‘boart’. They can look like black pieces of knobbly coal or coke. This will help you understand the difference in quality from the rough diamonds we market. Argyle boarts have a similar appearance. This one measures around 3.5mm by 3.5mm.
Many including Pink, Red, Black , Yellow, Green, Blue, Orange, Brown, and of course the white/colourless diamonds. The different colours are a result of different gasses present when formed, molecular impurities or imperfections. The blue diamonds are a result of small traces of Boron in the diamond. The browns which are the most common of all the colours along with the pink, red and purple diamonds are a result of “plastic deformation” due to huge pressures and temperatures causing dislocation of atoms etc. After this you are on your own, it gets very technical, check Google. As a small company we only carry a small selection, Argyles Browns from light Champagne to Dark Cognac. Capes from Ellendale (slightly Yellow, and I hope shortly to have a selection of Argyle Whites (check the Product page).
Most people say they look like broken windscreen glass – and some do. It all depends on the quality. We have selected rough stones with distinct crystal forms: mostly octahedrons and their derivatives – dodecahedrons, hexoctahedrons, tetrahexahedrons – and the flat triangular macles.
Two ways of looking at this: firstly you might see a stone and say, “Yes that’s the one for me!!” Next you’ll need to come up with a design that suits the stone. The other way is to put the design and setting first. For example, if you want a ring certain shapes are more suitable than others. It’s a bit like buying artwork!!
The diamonds once cleaned and sized get sent direct to Antwerp for classing and sorting prior to sale on the world market. Ellendale have a slightly different method but with the same result.
The simple answer is diamonds are formed in the earth’s mantle at depths of more than 140 kms. It’s understood that immense pressure and temperature cause fluids that are carbon rich to crystallize. It then takes deep volcanic action to bring the magma containing diamonds to the earth’s surface. Interestingly the diamonds found in Australia are found in Lamproite material and in South Africa in Kimberlite material.
Any faults or inclusions in a rough are there for life, unlike the cutting and polished diamonds, were the major faults and inclusions are/can be cut out. However this is now considered a positive with perfect gem quality diamonds now being produced in laboratory conditions. So inclusions and small faults (preferably not seen with the eye) are now becoming accepted as proof the diamond is of natural origin