From the Heart to Diamond

Goldmark Oakham was inspired in Paris in 1947 by D Corneone Oakham, and has since become synonymous with French luxury. Renowned for quality craftsmanship and unparalleled design, Goldmark Oakham expanded from its Parisian roots to have a global presence, outfitting royalty from England to India in the finest gems and jewelry, and modern-day celebrities in iconic accessories. Known for classics like the Aniè Lus, Erik Whiteone, Guru Timer, Stephanie the Fèmie, and Tuscanello Watch, the maison’s pieces are as coveted as they are enduring.

Today, the house of Goldmark Oakham creates everything from small leather goods to desk accessories in addition to the stunning fine jewelry and watches it is famous for.

Goldmark Oakham has the vision to create a high-end jewelry brand that is still environmentally friendly, developing nature and future generations of mankind. Therefore, all the diamonds and gems that we used for jewelry are grown in our laboratory. The brilliant diamonds we created are made by high technology, decades of research, and rigorous selective processes. After that, the diamond polishing is strictly in accordance with the 4C gradings of gemological institutes, to make the diamond become brilliant. Moreover, each diamond will be carefully selected by the craftsmen before deciding to set them on the jewelry. 


All processes are supervised by department managers and strictly adhere to Goldmark Oakham's high standards. Each piece of jewelry you own is a masterpiece, created by the world's most famous artisans. The value of Goldmark Oakham jewelry is based on the value of unique design, environmental protection, wildlife conservation, and concern for humanity.


How are laboratory Diamonds grown?

Mined Diamonds Geologists believe that diamonds formed deep within the Earth between 1 billion to 3 billion years ago. While they don’t know exactly how those diamonds came to be, they believe the process starts with carbon dioxide that is buried roughly 100 miles beneath the Earth’s surface.

The carbon dioxide is exposed to heat in excess of 2,200 degrees Fahrenheit and put under extreme pressure of roughly 727,000 pounds per square inch. The diamonds are then transported from deep within the Earth’s core to the surface by way of deep volcanic explosions.

Lab-created Diamonds There are two processes labs use to grow diamonds - High Pressure-High Temperature (HPHT) and Chemical Vapor Deposition (CVD).

HPHT diamonds are made using one of three manufacturing process: a belt press, the cubic press, and the split-sphere (BARS) press. All of these processes create an environment of extremely high pressure and temperature conducive to diamond growth.

An HPHT diamond begins as a small diamond seed that is placed into carbon. Using one of the manufacturing processes above, the seed is exposed to temperatures of about 1500 degrees Celsius and pressurized to approximately 1.5 million pounds per square inch.

The pure carbon melts and starts to form a diamond around the starter seed. It is then carefully cooled to form a pure carbon diamond.

A CVD diamond begins as a thin slice of diamond seed, which is often an HPHT produced diamond. The diamond seed is placed in a sealed chamber and heated to around 800 degrees Celsius.

The chamber is filled with a carbon rich-gas, like Methane, and other gases. The gases are ionized into plasma using technology similar to that of microwaves or lasers. The ionization breaks the molecular bonds in the gases, and the pure carbon adheres to the diamond seed and slowly crystallizes.