Gemstones by Colour : Multicolored Gems

In the category of multicoloured gemstones we list those gems which display multiple colours in a single stone. Some of these gems, such as tourmaline, fluorite and ametrine, have zones of different colours. Others, such as andalusite, are strongly pleochroic and display different colours from different angles.

Some multicoloured gemstones include: Tourmaline, AmetrineFluoriteAndalusiteOpalSphene, Colour-Change Sapphire, Mystic Topaz, Mystic Quartz, Watermelon Tourmaline (pictured below), Colour-Change Alexandrite, and Labradorite.

September 07, 2014 by Perrine Comeille

Gemstones by Colour : Grey Gems

There are very few gemstones which are predominantly grey or silver. In our experience the most popular is spinel, whose brilliance shows the finest shades of grey.

Some grey gemstones include: Spinel, Grey Diamond, Tourmaline, and Fluorite

August 31, 2014 by Perrine Comeille

Gemstones by Colour : Orange Gems

Spessartite garnet is the most famous orange gem, but there are a number of other options as well. Orange sapphire is produced by heat treatment. The finer fire opal occurs in hues from yellow-orange to red-orange. Natural fancy orange diamonds are caused by the presence of nitrogen in the diamond's carbon lattice structure.

Some orange gemstones include: Spessartite Garnet, Orange Diamond, Andesine, Zircon, Fire Opal, Orange Sapphire, Orange Tourmaline, Imperial Topaz, Mandarine Garnet, Mali Garnet, and Citrine


August 24, 2014 by Perrine Comeille

6 Facts You Should Know About Yellow Sapphires

  • After blue, the gorgeous yellow sapphire is the most popular color in today’s market.

  • Many yellow sapphires closely resemble yellow diamonds. They can range in color from greenish-yellow and orangish-yellow, to everything in between.

  • Yellow sapphire’s often-superior clarity is quite convenient, since the bright yellow color shows does little to hide inclusions.

  • Sapphire is the birthstone for September.

  • Yellow Sapphires rate 9.0 on the mohs hardness scale. 

  • The primary source for yellow sapphires is Sri Lanka. but they can also be found in Tanzania, Madagascar, Thailand and Australia.

August 21, 2014 by Perrine Comeille

6 Facts You Should Know About Purple Sapphires

  • The colours purple and violet are often confused, but are actually distinct hues. Purple is a blended hue: red with a mixture of blue. These colors may be considered more obscure due to the availability of other purple and violet gemstones.

  • Sapphires are far more durable and brilliant than other stones of the same colour.

  • Sapphires are the birthstone for the month of September.
  • Many purple sapphires show subtle shifts in color under different kinds of lighting. They will appear violet under daylight or fluorescent lighting, and distinctly purple under incandescent lights.

  • Purple Sapphires rate 9.0 on the mohs hardness scale, making them one of the best gemstones for use in jewellery. 

  • Purple sapphires come from Sri LankaKenyaTanzaniaMadagascar, and Myanmar.

August 19, 2014 by Perrine Comeille

Gemstones by Colour : Purple Gems

The list of violet and purple gemstones is quite short. Amethyst is the classic example, though fluorite can also be found in an amethyst-like purple. There are wonderful violet hues in spinel, tourmaline and sapphire. Chalcedony frequently occurs in a unique lavender hue.

Some purple gemstones include: Amethyst, Purple Diamond (shown below), Chalcedony, Purple Tourmaline, Fluorite, Spinel, and Purple Sapphire

August 17, 2014 by Perrine Comeille

6 Facts You Should Know About Yellow Diamonds

  • The dramatic and brilliant glow of these diamonds makes them a red carpet favorite among celebrities, and as a result, they are the most widely known of colours.

  • The most notably large and intense yellow diamonds have been discovered primarily in South Africa.

  • One of the largest polished diamonds in the world is the Incomparable, a 407ct internally flawless brownish yellow diamond.

  • The vast majority of all diamonds contain some nitrogen, which is the cause of a yellow diamond's beautiful colour.

  • Yellow Diamonds rate 10.0 on the mohs hardness scale, making them ideal for use in jewellery.

  • Yellow diamonds can contain an orange, green or brown modifying colour.

August 14, 2014 by Perrine Comeille

10 Facts You Should Know About Blue Diamonds

  • Blue diamonds are considered extremely rare and mysterious. They range from the light blue sky of a winters day to the deep blue of the ocean.

  • The movie Titanic features a fictional Fancy Deep Blue Diamond called "Heart of the Ocean." But the depiction of the diamond in the movie is unrealistic; it looks much more like a sapphire.

  • The striking blue colour often comes from boron trapped in the crystal’s structure.

  • Due to the presence of boron, only natural blue diamonds conduct electricity. 

  • Blue diamonds are rare, with only about one in 200,000 diamonds showing a bit of blue, and far fewer displaying rich colour.

  • The Cullinan mine and Golconda region are the most notable areas where blue diamonds have come from. 

  • In 2008 The Wittelsbach Diamond, a 35.56 carat cushion-shaped fancy deep blue, was purchased at auction for $24 million. 

  • The most famous blue diamond in history is the 45 carat Hope Diamond, which is rumored to be cursed. One of its owners Evalyn McLean believed it to be her good luck charm, but after possession of the gem she became a morphine addict, her young son died, her husband divorced her, and her daughter committed suicide.

  • Irradiated "blue diamonds" are genuine diamonds that have been treated with intense radiation. Irradiated diamonds are poor substitutes for their natural blue cousins, due to their electric-blue-green colour.

  • Blue Diamonds rate 10.0 on the mohs hardness scale, making them exceptionally well-suited for use in jewellery. 


August 12, 2014 by Perrine Comeille

Gemstones by Colour : Blue Gems

The most classic blue gemstone is sapphire, and the most highly valued blue sapphires are velvety-blue to violetish-blue in medium-to-medium-dark tones. Deeply saturated blue is also found in spinel and kyanite. There are a number of choices in the lighter blues including topaz, zircon and aquamarine. Tanzanite and iolite are more of a violet blue, while Paraiba tourmaline, apatite and fluorite tend to be blue-green.


Some blue gemstones include: Sapphire, Blue Diamond, Zircon, Iolite, Paraiba Tourmaline (pictured below), Tanzanite, Topaz, Spinel, and Aquamarine

August 10, 2014 by Perrine Comeille

5 Facts You Should Know About Pink Diamonds

  • Pink diamonds range from delicate pastel to deep raspberry, and are typically associated with romance.

  • These extremely rare diamonds have long been revered by Hollywood stars and today are a favourite of collectors and connoisseurs.

  • Pink diamonds have only been found in a few mines across the world. The rich Golconda region in India and the Minas Gerais region of Brazil produced notable diamonds in the 17th and 18th centuries.

  • Today, the Argyle mine in Western Australia is the source of the vast majority of the worlds supply. Argyle is famous for generating the hugely coveted full-bodied hot pink diamonds.

  • Pink diamonds rate 10.0 on the mohs hardness scale, making them exceptionally well-suited for jewellery.

August 07, 2014 by Perrine Comeille