Castellani Sale - Collection of Gemstone & Diamond Jewellery

Sale no: 2507582

Sale closed

Castellani Sale - Collection of Gemstone & Diamond Jewellery
Sale type
Online Delivery
Start time
05/01/2017 9.30 PM AEDT
Closed
12/01/2017 9.00 PM AEDT
Deliver to
Nationwide Delivery
Buyers premium
17.50%
GST
Inclusive
Sales Support
GraysOnline Help Centre
Under instructions from
Castellani

This auction has now closed. If you are interested in similar sales, click here.

Catalogue and Bidding available from 05/01/2017 9.30 PM AEDT

About Valuations

Each valuation is produced for "Retail Replacement" in the following environment;

  • Traditional Metropolitan retail outlet
  • In the SydneyCBD
  • Based upon Australian material & labour costs.

When a valuer generates a valuation for "Retail Replacement" he is trying to most accurately determine what that item would sell for in the above retail environment. As grading diamonds and precious stones is not an exact art variations do occur.

Emerald Info

Emerald Info

Emerald

The emerald has over the last decade seen resurgence in popularity. The emerald’s rich green colour adds glamour and sophistication to any women’s jewellery collection. With the emerald taking centre stage once again amongst the rich and famous, a general increase in demand and value was noted, making it not only stunningly wearable but a great investment.

Like any stone, the qualities that govern its investment potential come from the same qualities one would consider when buying a diamond. With the right knowledge, investing in emeralds can reap rewards. The better the quality, the better the returns over the long run.

The C’s that govern the Emerald’s value.

COLOUR:

The emerald’s number one indicator of quality will be its colour. The most desirable emerald colours are bluish green to pure green. A great emerald is also highly transparent because its colour is spread evenly with no eye-visible colour zoning. An intensely green coloured emerald is extremely rare.

CLARITY:

Most emeralds contain inclusions that are visible to the eye. Once you know this, it becomes easier to further asses the overall quality of the emerald and accept any inclusion you might see. However, if the inclusion has a negative effect on the transparency and clarity the value of the emerald is reduced. Eye-clean emeralds are especially valuable because they are so rare. *see notes on enhancement.

CLARITY ENHANCEMENT:

Almost all emeralds are enhanced with what the trade call ‘natural oil’. Oils are used to enhance the overall appearance of the stone. Both the GIA and CDTEC labs more correctly describe oils as ‘artificial resins’. It should be noted that Minor or Moderate treatment is entirely normal.

‘SIGNIFICIANT’ treatment will have a negative effect on the price of the stone. A stone with no treatment is VERY RARE.

CUT:

The cut of the emerald is an important part of its overall appeal. The cutter has taken all the factors that make up the stone to bring out its best. From how the colour is distributed to where any inclusion might be. The emerald is a more brittle stone so a good cutter will also consider the cut that will minimise and damage to the stone.

CARAT WEIGHT:

Emerald stones can be found as small as 0.02carats and as big as 20 carats.

Why Columbian Emeralds?

Colombian emeralds have a vibrancy in their colour which cannot be found in emeralds sourced from other regions. The finest Colombian emeralds are often more valuable than the same size fine diamond.

The colour of emeralds are closely linked to the location of where they are mined. The concentration or absence of the chromium, vanadium and iron which provide the emerald’s colour will dictate the richness of greens and the hues of blue.

Castellani source emeralds direct from miners and traders in the heart of Bogota, Colombia ensuring the best possible price for the customer by cutting out a multitude of middle-men.

Are emeralds treated?

Generally emeralds are treated and oiled as part of the post-lapidary process improving their clarity and stability.

Gems are graded on a scale of; none, insignificant, minor, moderate and significant. These categories reflect levels of enhancement, not clarity. A gem graded none on the enhancement scale may still exhibit visible inclusions.

Laboratories tend to apply these criteria differently. Some gem labs consider the mere presence of oil or polymers to constitute enhancement.

Given that the vast majority of all emeralds are treated as described above, and the fact that two stones that appear visually similar may actually be quite far apart in treatment level and therefore in value, a consumer considering a purchase of an expensive emerald is well advised to insist upon a treatment report from a reputable gemological laboratory.

CERTIFICATION:

Our Colombian Emeralds have been graded by the strict CDTEC Lab in Colombia. Using the latest technology in grading and committed to quality and credibility, the lab offers reliable grading and classification.

http://www.gemlabcdtec.com/home/en

How do I care for Emeralds:

  • Treat with love and care – put your emeralds on after you have showered and dressed, applied makeup, lotions, perfume and hairspray.
  • Avoid ammonia, dishwashing liquid – it is not good to expose many types of jewellery to harsh cleaning chemicals.
  • Be careful not to knock your emeralds against a hard surface – treat with care as you would your best diamonds. All stones can chip, crack or be damaged if care is not taken.
  • You can choose to clean your emerald occasionally in warm soapy water and rinse well, however you are best to take it to be professionally cleaned every few years if you wear your emeralds on a regular basis.

Please refer to the GIA website for further information on looking after your emeralds.

http://www.gia.edu/emerald-care-cleaning

Diamond Cut

Cut refers not only to a diamonds shape (e.g. round, oval, pear, etc.) but to a diamonds proportions, symmetry and polish. Many gemmologists consider the cut of a diamond to be its most important characteristic. The beauty of a diamond depends more on cut than any other factor. Though extremely difficult to analyse and quantify, diamond cut has three primary effects on appearance: brilliance (the brightness created by the combination of all the white light reflections from the surface and the inside of a polished diamond), fire (the dispersion of light into the colours of the visible spectrum, seen as flashes of colour), and scintillation (the flashes of light and dark, or sparkle, when a diamond or light source is moved). In other words, a diamond with a poor cut will appear dull, even if it has the perfect colour and clarity.

See Diagram below.

Diamond Clarity

Because they are formed deep within the earth under extreme heat and pressure, virtually all diamonds contain "birthmarks"; small imperfections inside the diamond (called inclusions), or on its surface (called blemishes). Clarity refers to the degree to which these imperfections are present. Diamonds which contain numerous or significant inclusions or blemishes have less brilliance because the flaws interfere with the path of light through the diamond.

See Diagram below.

Please note P1 - 3 & I1 - 3 are exactly the same

Colour

When it comes to a diamonds colour, many people think that a "good" colour means that it is brilliantly white - but this is seldom the case. Nature has provided a whole spectrum of colours in the makeup of diamonds, including red, pink, green, blue, and yellow. Acting as a prism, a diamond divides light into a spectrum of colours and reflects this light as colourful flashes called fire. The less colour in a diamond means the more colourful the fire, which results in a better colour grade.

The photo below shows a master set used by gemmologists to grade colour in diamonds. Each diamond to be graded is compared to the master set to determine where it should fall on the diamond colour scale. The colours you see below are slightly exaggerated, since viewing diamonds face down makes their body colour more pronounced. The face down orientation makes the detection of body colour easier because brightness and fire are minimized when the diamond is face down.

Carat

A diamond or gemstones "Carat" designation is a measurement of both the size and weight of the stone. One "Carat" is a unit of mass that is equal to 0.2 grams (200 milligrams). A carat can also be divided into "points" with one carat being equal to 100 points, and with each point being 2 milligrams in weight. Therefore, a 1/2 carat diamond would be 50 points, a 3/4 carat diamond is 75 points, and a 2 carat diamond is 200 points.When a single piece of jewellery has multiple stones, the total mass of all diamonds or gemstones is referred to as "Total Carat Weight" or "T.C.W."

Two diamonds of equal carat weight may also appear very different in size based on the shape of the diamond. For instance, a 1 carat marquise tends to appear larger than a 1 carat round. The chart below illustrates why. For each diamond, the chart shows the following:

  • Approximate size. The diamond images shown are a very close approximation of the actual size of a 1 carat excellent cut for each shape. Visually, the longer shapes (oval, marquise, pear, emerald) tend to appear larger to the eye than the round and square shapes.
  • Measurements (Length x Width). The measurements correspond to the shape shown above, and are typical for excellent cut diamonds of 1 carat weight.
  • Crown Area - The total surface area (mm2). The area gives the true size of the diamond face up (as it would appear when set in a ring). For example, while the oval diamond image appears larger than the round image, the actual surface area is the same for the two shapes, meaning the difference in size is one of perception, not reality. In contrast, the oval not only appears larger than the princess cut, it actually has a larger surface area (approximately 10% larger in this example), meaning the difference is not simply an illusion created by the elongated shape.

Remember that while the measurements below are typical, every diamond is unique.

Diamond Anatomy

  • Diameter: The width of the diamond as measured through the girdle.
  • Table: The largest facet of a gemstone.
  • Crown: The top portion of a diamond extending from the girdle to the table.
  • Girdle: The intersection of the crown and pavilion which defines the perimeter of the diamond.
  • Pavilion: The bottom portion of a diamond, extending from the girdle to the culet.
  • Culet: The facet at the tip of a gemstone. The preferred culet is not visible with the unaided eye (graded "none" or "small").
  • Depth: The height of a gemstone measured from the culet to the table.

Delivery Information

Delivery time frames will depend on your location, please check the shipping calculator to see an estimate of when you can typically expect to receive your goods based on your postcode.

We will send you an email notifying you as soon as your items have left our warehouse.

In this email, you will find the name of the courier company and the consignment note number of your item as well as information on tracking the delivery of your item online. Simply follow the link and enter your reference number. You will then be able to quickly and efficiently track the delivery status of your item!

Please Note: Your goods will be delivered to your registered address. We do delivery Australia wide except for a few remote territories, please check the shipping calculator to confirm delivery availability and timeframes.

About Castellani Jewellery

Castellani Jewellery was formed in 2005 specialising in diamonds and engagement rings, and has evolved to become a premier supplier of beautiful Colombian emeralds to the Australian market.

Falling in love with the beauty of Colombian emeralds and continuing their ethos of supplying only the best quality, using Colombian stones for their Castellani branded jewellery was the obvious choice. Colombian emeralds have a reputation as ‘the best’ emeralds because of their vivid green colour.

Castellani integrates style, elegance and expertise in every piece of jewellery they design and sell. Their range of rings, earrings, pendants and bracelets are designed for all tastes – classic, romantic, art-deco inspired and more contemporary designs are created and made in Sydney, Australia by local artisans.

Castellani choose to provide the same premium quality jewels as you may find on the high street without the massive mark-ups on the price, as they don’t have the same expenses and pressures to sell at recommended retail values. The recommended retail valuations listed on all the auction items is what you would expect to pay if you were buying from a ‘shop front’, however the overheads are cut to make the price fair for everyone.

Although they specialise in Colombian emeralds, Castellani recognise that their valued customers also like variety and may not always be buying for themselves. So they offer a range of other gemstones and pricing options including the new Infinity range along with luxury Rolex watches.

Castellani has been a partner with Grayonline for the past 8 years, and they have weekly sales on the site.

FAQ'S

Where is Castellani jewellery made?

Castellani integrates style, elegance and expertise in every piece of jewellery they design and sell. Their range of rings, earrings, pendants and bracelets are designed for all tastes – classic, romantic, art-deco inspired and more contemporary designs are created and made in Sydney, Australia by local staff.

Resizing of Castellani jewellery

It is recommended that you take any Castellani jewellery you win to a high-street jeweller to be custom fitted to your finger or wrist. This will ensure you receive a bespoke fit which will feel more comfortable to wear. Castellani sell their jewellery at the most popular Australian ring sizes. Rings are designed to allow resizing unless stated differently.

Consider this… if you factor in the price of your newly purchased jewellery with the minimal cost of having it resized at a high-street jeweller, you may well save thousands of dollars.

What is the warranty?

Castellani offer a full one year warranty on the workmanship of their fine jewellery. Please refer to the individual piece to confirm this.

Rolex:

Founded by Alfred Davis and Hans Wilsdorf in England in 1905, Rolex is the largest luxury watch manufacturer is the world, as well as being a well known, trusted brand the people instantly recognise and aspire to own.

Our Rolex watches range from 100% factory original with boxes, through to a vintage model loved by another.

The vintage Rolex refurbishing service procedure is designed to ensure that every watch is overhaulded, with each case and bracelet refinished to restore it’s lustre. It is then tested to a new condition with aftermarket parts if required to reach the level of quality and reliability you expect from a Rolex watch.

Inspection Information

To make an appointment to view any of the Lots in this Sale, please contact jewellery@grays.com.au

Appointment is necessary.

All items are located in our Sydney warehouse.

Inspection information Privacy Policy:

Personal information provided to Grays for the purpose of a product inspection will be retained for internal use and is used only to establish identity at the time of inspection. By providing such information you consent to Grays retaining it for our internal records. Information requested for inspection may include, but is not limited to, Drivers Licence details, Passport, phone number and email address. Personal information provided for inspection is independent of any other personal details provided to Grays as part of the member registration process.

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