Category Archives: Diamond

A diamond moment! Forever in love.

If we turn back the clocks to when the cave men existed, the ring which was normally made from garlands and flowers, were given to a woman as a symbol of ownership by the male. This symbolism of ring giving still exists but has since become a joint decision between the man and the woman.

Engagement rings have been used for centuries but the use of diamonds was relatively recent. The main reason for this was because diamonds were not available on the world market. It was only in the 1870’s when miners began to find diamonds that we began to see more and more diamonds being used so prolifically. However, a rare occurrence took place in 1477 when Archduke Maximilian of Austria gave a diamond ring to Mary of Burgundy.

Most of us will always associate an engagement with the giving of a diamond ring but the tradition was owing to a marketing campaign started by De Beers back in the late 1930s. Frances Gerety wrote the slogan ‘A Diamond Is Forever‘ and it has appeared in every De Beers engagement advertisement since 1948.

Frances Gerety

Did you know?

Thousands of years ago the Greeks and Romans believed that a vein from the fourth finger in the left hand ran directly to the heart. By placing a ring on this finger was a way to be in direct contact with the vena amoris… the ‘vein of love’. Although this has been proved to be untrue, the tradition has continued right through to today.

The name ‘diamond‘ comes from the Greek word ‘Adamao‘ which means unconquerable – suggesting the eternity of love. Since ancient Greece, diamonds and diamond jewellery have been the traditional symbol of love, and the ancients believed they were hardened dew drops, splinters from the stars or crystallized lightning.

The Private Diamond Club are proud of the wonderful collection of diamond engagement and wedding rings and share the sentiment that diamonds are a true symbol of love!

Know Your Diamonds: All about the shape

Diamonds will always be a source of intrigue … This month we take a look at some of the shapes available when choosing diamonds and speak with the experts at the Private Diamond Club

Yvan Delcourt, investment diamond expert and founder of the Private Diamond Club tells us that the most common shape of diamond is the round one or “brilliant cut”. With 57 facets it is the form that returns the most light and is the best selling and most expensive.

There are other shapes, known as “fantasy” that are used in jewellery. We feature 10 shapes, the princess cut, emerald, pear, radiant, marquise, cushion, heart, oval and asscher.

Round Brilliant: Developed around 1900, the round diamond is the most popular cut given to diamond. It is usually the best choice in terms of saleability, insurability (due to its relatively “safe” shape), and desired optics.

Princess Cut: The princess cut is the second most popular cut shape for diamonds, next to a round brilliant.[citation needed] The face-up shape of the princess cut is square or rectangular and the profile or side-on shape is similar to that of an inverted pyramid with four beveled sides. The princess cut is a relatively new diamond cut, having been created in the 1960s.

Emerald: Stones whose outlines are either square or rectangular and whose facets are rectilinear and arranged parallel to the girdle are known as step- or trap-cut stones. These stones often have their corners truncated, creating an emerald cut with an octagonal outline. This is done because sharp corners are points of weakness where a diamond may cleave or fracture. Instead of a culet, step-cut stones have a keel running the length of the pavilion terminus. Like other fancy shaped diamonds, emerald cut diamonds can come in a variety of length to width ratios. The most popular and classic outline of emerald cut diamonds are close a value of 1.5.

Pear (or teardrop cut): The first pear-shaped diamond was created in the 1400s by Flemish cutter Lodewyk van Berquem of Bruges, inventor of the diamond-polishing wheel, or scaif. This invention enabled him to polish all the facets of the diamond to optimize light reflection within it. It was from this watershed moment onwards that diamonds began to be used in jewellery.

Radiant: This very special cut is the result of one man’s dream to combine the elegance of an Emerald Cut with the unparalleled brilliance of a Round Brilliant Cut. The Radiant Cut diamond allows people to choose a square or rectangular cut without compromising on brilliance. Recently, the shape has also gained popularity as a preferred choice for engagement rings. Usually these diamonds are set as a solitaire, but they also look amazing when set with either baguette or round shoulder stones.

Marquise: The name is derived from the Marquise of Pompadour, for whom King Louis XIV of France allegedly had a stone fashioned to resemble what he considered her perfectly shaped mouth. Because marquise diamonds are long and narrow, they can also create the illusion of greater size. Owing to the shape this cut is sometimes known as a “Navette” (little boat).

Cushion: The cushion cut diamond once referred to as old mine cut) combines a square cut with rounded corners, much like a pillow (hence the name). … While generally less brilliant than round brilliant diamonds, cushion cut diamonds often have better fire, which is part of their appeal. This classic cut has been in existence for almost 200 years, and for the first century it was the most popular diamond shape, similar to round cut today.

Heart Brilliant: Heart shaped diamonds are very popular in solitaire pendants as well as rings and are of course, the unique and unmistakable symbol of love. When choosing a heart, symmetry is a very important characteristic, since it is critical that the two halves of the heart are identical. The first recorded heart shape diamond appears in a portrait entitled “The Gonzaga Princess,” painted around 1605 by Frans Pourbus the younger.

Oval: The diamond oval cut is a newer type of cut created in the 1960s by the popular diamond company Lazare Kaplan International. The cut is a modified brilliant cut which preserves many of the supreme qualities of the original – and exceptionally flashy –  round brilliant cut. Most oval cuts contain 56 facets, but some may have a few more facets depending on how the underside of the stone (known as the pavilion) is cut.

Asscher: In 1902 Joseph Asscher designed the original Asscher cut. This emblematic cut was the first signature cut to be patented. The Asscher Diamond Company held its exclusive patent until the Second World War and saw strong sales internationally. This cut’s popularity peaked in the late 1920s but remained a somewhat rare commodity for the remainder of the century, available only in antique shops and specialised Art Deco jewellers. At the onset of the new millennium, following considerable research and development, the Asscher cut was redesigned with new specifications and additional facets for a more brilliant shine, and has since regained its popularity.

Whatever your preference for the style of diamond is, you can always speak with the Private Diamond Club who will be happy to help and advice. The Private Diamond Club always issue a certificate with every purchase which is the best way to guarantee the authenticity and quality of the diamond.

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Gorgeous Jewellery to Brighten Up your Summer Wardrobe

As you prepare to spring clean your wardrobe to reflect the change of seasons, why not brighten up your jewellery box with one of our stylish diamond rings?

Each jewel in the Private Diamond Club collection is named after a flower in French, offering a wonderful array of floral jewellery to match floaty, pretty, summer fashion. Continue reading Gorgeous Jewellery to Brighten Up your Summer Wardrobe

Vintage Glamour with Black & White Diamond Jewels

Next Tuesday sees the start of the 69th edition of the Cannes Film Festival. Along with being the world’s most famous celebration of cinema, the event, which runs from the 11th – 26th of May on the French Riviera, offers ample opportunity to star gaze as Hollywood’s A list arrive at both screenings and parties showcasing high fashion and stunning jewellery.

In homage to the stars of yesterday who have walked the iconic Cannes red carpet since the first festival in 1946, we’ve decided to showcase five classic pieces of black and white diamond jewellery from the Private Diamond Club collection that ooze old school Hollywood glamour. Continue reading Vintage Glamour with Black & White Diamond Jewels

What is the composition of diamond?

What connection is there between a lump of coal and this sumptuous stone that adorns most engagement rings? The composition of diamond

Carbon is the principal chemical element that composes the diamond. In fact, graphite or charcoal, under enormous temperature and pressure, saw its carbon atoms to draw nearer and especially to organize. Connections have been established between atoms creating very strong links between them.

While the structure of graphite is made of sheets (which tend to slide over each other), the structure or diamond is made of atoms which connections between them are directed in three directions.


This difference in the layout of the same atoms explains the differences in properties:

  • – Conduction of current: the graphite is conductive (current flowing between the layers), diamond is an insulator
  • – Heat conduction: the diamond is an excellent conductor of heat, the graphite is moderately
  • – Transparency: as everyone has noticed, graphite is opaque, diamond is transparent.
  • – Hardness: that of diamond is 10 on the Mohs scale (diamond can only be cut by another diamond) that of graphite is 2 on the same scale.

At the compression and processing of graphite over time, impurities may have been trapped in its structure.

Mechanical impurities that may be in the rough diamond, will hinder the path of light rays in the stone and reduce its brilliance. The cutter does everything possible to eliminate most mechanical impurities during the cut.

Chemical impurities, present in the form of some foreign atoms that are found trapped in the structure are themselves popular because they are the ones that give color so rare diamonds: the structure are themselves popular because they are the ones that give color so rare diamonds: Yellow for nitrogen atoms, blue for boron atoms or for titanium atoms.