Precious Gemstones

All MV precious stones are hand-chosen by Monica and bespoke cut to her specifications. Learn more about diamonds in our stone guide.


Diamond is the hardest known mineral to man, formed by the elemental forces of heat and pressure up to 50 miles below the earth, more than three billion years ago. This universally adored precious stone is 140 times harder than sapphire and ruby, which explains why it is symbolic the world over for everlasting love.

Diamonds are made of pure crystallised carbon with trace amounts of other elements, notably nitrogen and boron. Increased amounts of these trace elements in the crystal create variation in colour. Stones with no trace elements are colourless. Increased amounts of nitrogen create a yellow 'Champagne' colour in the stone. Monica Vinader blue diamonds are treated by the annealing process in which heat is used to improve their colour and achieve a beautifully vivid tone.

The' brilliance' and 'fire' within a diamond is caused by its high refractive index - the highest of any naturally occurring gemstone - so the light will bounce and reflect within the stone, which along with its ability to be highly polished, creates the exquisite 'sparkle' effect.

Birthstone for: April

Ethical Sourcing

Monica Vinader is committed to ensuring ethical sourcing of our products and we work closely with our suppliers to ensure that they adhere to our Code of Conduct, which sets outs the standards of business behaviour we expect from our suppliers.

Our diamonds are sourced through suppliers who adhere to the Kimberley Process and the World Diamond Council's System of Warranties, preventing the distribution of conflict diamonds both in rough, cut and polished stones. Conflict diamonds are those smuggled by rebels to finance wars against legitimate governments. Our diamond suppliers are also compliant with United Nations resolutions.

The 4 C's

Cut refers to the diamond's reflective qualities resulting from the exact placements of facets within the stone. MV diamonds are cut to show their brilliance to optimum effect and the shape we use is round.

Diamonds are graded on their lack of colour. Most valuable diamonds are colourless, with the exception being diamonds with strong colour traces such as yellow, blue and pink, which are very rare. MV diamonds are H/I colour, which is near colourless on the scale.

Nearly all diamonds contain some natural inclusions. The visibility and number of these inclusions determine its clarity, and the fewer inclusions, the more valuable the diamond. The clarity grades are: Flawless, Internally Flawless, Very Very Slightly Included, Very Slightly Included, Slightly Included and Included. MV diamonds range from slightly Included- Included, meaning minute inclusions can be detected under 10 x magnification.

A Carat (ct) is a unit of measurement to weigh gemstones. A one carat diamond can come in varying sizes depending on how it is cut. You can find the carat weight of your MV diamond piece in its style description.

  • Black Diamond

    Translucent black with no visible inclusions or character to the naked eye. Smooth surface which shines when cut and polished.

  • Blue Diamond

    A translucent teal-blue colour which may vary slightly between each diamond. No visible inclusions or character to the naked eye. Smooth surface which shines when cut and polished.

  • Champagne Diamond

    Translucent champagne colour, also referred to as 'light brown' or 'cognac'. The shade may vary slightly between each diamond. No visible inclusions or character to the naked eye. Smooth surface which shines when cut and polished.

  • Diamond

    We use H or I colour diamonds which are near colourless. Our I1 clarity means our diamonds are slightly included. Due to the small 0.8mm size of our diamonds, these inclusions are not visible to the naked eye and we are sure they do not affect the over all sparkle. Diamonds are inherently 140 times harder than sapphire and ruby.