Posted on June 01, 2018 by Jan at Neville Jordan | 0 Comments


June is one of only two months that has three birthstones associated with it, giving the lucky people born in June a choice of gemstones between pearl, alexandrite and moonstone.


Posted on April 11, 2018 by Jan at Neville Jordan | 0 Comments

Over recent years coloured diamonds have become increasingly popular & values can be 100 times more than that of a white diamond!
Most diamonds are in the colourless to light yellow range, BUT some have a natural colour that is deep, distinct, and opulent. These are known as fancy-colour diamonds and are valued for the intensity of their colour. Intensely coloured diamonds are the rarest and most beautiful of nature's gem treasures. Rarity and desire are the two things that set the price of coloured diamonds. The most rare and prized in order are red, blue, pink, green, gold and then yellow, milky white, champagne and black.

Blue Diamonds
Natural blue diamonds are a light greyish blue shade, more "steely" than sapphire. The most famous blue diamond is the 45.52 carat Hope diamond - found in India in 1642.
Pink Diamonds
The LARGEST pink diamond in the world, weighing approximately 186 carats is part of Iran’s Imperial Crown Jewels collection. The table-cut, pale pink Darya-i-Nur (“Ocean of Light”) diamond is one of the oldest known to man and is mounted with 457 smaller diamonds.
Green diamonds
Green diamonds have come in contact with radioactive minerals, creating a green "skin".
The Gruosi Green diamond is a near flawless, cushion cut green diamond, weighing 25 carats & surrounded by 382 smaller black diamonds. The ring is estimated at US$7.3m  and is described as the finest modern specimen of a green diamond.
Yellow Diamonds
Fancy yellow diamonds come in a range of hues from greenish yellow to amber.The most intense yellow is called "canary” and prices rise with increasing intensity.  
One of the biggest yellow diamonds in the world, the dazzling Tiffany Yellow Diamond,  was cut from 287.42 carats into a magnificent 128.54 carat yellow diamond.
Black Diamonds
Natural untreated black diamonds are popular in high-fashion jewellery
The Black Orloff was discovered in India in the early 1800s. It a cushion cut diamond  weighing  67.50 carats. It is also called the Eye of Brahma Diamond and is currently owned by a diamond dealer from USA who bought it for an unspecified sum in 2005.


Posted on February 13, 2018 by Jan at Neville Jordan | 0 Comments



Pantone has announced Ultra Violet as its Color of the Year for 2018, but just who are the experts that make this decision each December?

Pantone got its start in 1963. Founder Lawrence Herbert created a system for identifying, matching and communicating colors for consistency across the print and textile design industries. His initial work led to the Pantone Matching System, a book that standardized colors across these fields.


Purple has ancient associations with power and royalty. We also associate it with the mysterious — the cosmos, mysticism, and counterculture. Think of Prince, David Bowie, and Jimi Hendrix, alternative icons who favored this brilliant hue.

Ultra Violet-inspired gemstones include amethyst and tanzanite.




Posted on October 19, 2017 by Jan at Neville Jordan | 0 Comments

Did you wonder why a 2 carat diamond does not look twice as big as a 1 carat diamond?
The carat is a unit of mass which is used to weigh diamonds. 
Just because a diamond is twice as heavy as another stone, it doesn’t mean it will look twice as large as the other.


Posted on October 01, 2017 by Jan at Neville Jordan | 0 Comments

Tourmaline is a birthstone for October and is also the gem of the eighth anniversary.
Tourmalines come in a wide variety of exciting colours and very few gems match tourmaline’s dazzling range of colours. From rich reds to pastel pinks and peach, intense emerald greens to vivid yellows and deep blues, this gem’s colour range is unrivalled.The chemical composition is responsible for its colour.
Many tourmaline colour varieties have inspired their own trade names:

Rubellite is a name for pink, red, purplish red, orangy red, or brownish red tourmaline.
Paraíba is a greenish blue, or blue tourmaline from the state of Paraíba, Brazil.
Watermelon tourmaline is pink in the centre and green around the outside.
 Care & Cleaning Guide
Tourmaline ranks 7 to 7.5 on the Mohs scale. Its toughness is considered Fair.
Heat can damage a tourmaline. High heat can alter the colour, and sudden temperature change (thermal shock) can cause fracturing.



    Posted on September 01, 2017 by Jan at Neville Jordan | 0 Comments

    One ounce of gold can be stretched to a length of 50 miles; the resulting wire would be just five microns wide.

    One ounce of pure gold could be hammered into a single sheet nine metres square.

    Over 90 percent of the world’s gold has been mined since the California Gold Rush.

    The chemical symbol for gold is Au, from the Latin word aurum meaning “shining dawn” and from Aurora, the Roman goddess of the dawn.

    Most of the world's gold supply is extracted by hard rock mining; the process of using open pit or underground mining tunnels to retrieve the gold from the rock.

    Where does gold come from?

    China (The world's top gold producer for 10 years) Australia, Russia, USA are the leading producers by volume.



    Posted on August 01, 2017 by Jan at Neville Jordan | 0 Comments


    Diamonds were first discovered and mined in India over 2,400 years ago. Over time, diamonds were found in many other areas around the world and today Africa, Russia, Australia, and Canada produce the most diamonds.
    The world’s largest diamond mine to open for more than a decade opened in 2016.
    The new 1200 hectare mine, Gahcho Kué, is located 280 km northeast of Yellowknife in the Northwest Territories  of Canada. It is a joint venture between De Beers Group, which owns 51 per cent, and Canadian diamond mining company Mountain Province Diamonds, which owns 49 per cent. The mine cost more than $1 billion to develop.
    In February 2017 workers at the Gahcho Kue diamond mine discovered a 68-carat diamond, the largest gem in the mine's short history.
    According to De Beers, the site is on track to reach full commercial operation in the first quarter of 2017 and is expected to produce about 54 million carats of rough diamonds over its expected 11 to 13-year lifetime.