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Guide Buying



Yellow hues always creates a feeling of warmth and coziness, with a splash of sunshine that is gentle invigorating and cool just like the diamond infusing high level of activity, laughter and fun.

Fancy Yellow Diamond


Pink the powerful representation of energetic power of the feminine principle and unconditional love,
rarely expressed just like a handful of pink diamond from millions of carats from a whole years worth of supply.

Fancy Intense Pink Diamond


The natural, down-to-earth hue associated with warmth, comfort and security, abundantly found as diamonds exceptionally gorgeous and exude a sense of sophisticated allure

Fancy Vivid Yellow Diamond


Green the powerful representation of energetic power of the feminine principle and unconditional love,
rarely expressed just like a handful of pink diamond from millions of carats from a whole years worth of supply.

Fancy Green Diamond

Gemstones in same size but of different colours from amethyst to coloured zircon

Intrigued by nature's range of colours?

What's the top of the colour pyramid?

Presenting Natural Fancy Coloured Natural Diamonds

We all wish to enhance our appeal!

Natural Coloured Natural Diamonds at C. Krishniah Chetty will take your breath away. Take a look at the
rare diamonds and gemstones collection.

The rarest of rare diamonds, for the rarest of rare taste in fine living

Wish to more know more?
C. Krishniah Chetty began selling natural coloured by nature, natural diamonds recorded first in Circa 1945 (repeat the story of the yellow diamond sold by ckc here as per Heritage Jewellery Report... (with admin Sowmya)

Since then our expertise has been sought by leading who's who of india and around the world. Oh No! We don't sell a million of them, not even hundreds of them... remember nature produces only a handful a year.

The Argyle mine in Australia was the primary producer of coloured diamonds in modern times. The mine was closed in 2020-21 for commercial production. The various other mines producing diamonds or other minerals do bring us a small selection now and then, quite sporadically. C. Krishniah Chetty does offer a selection of fine stones and make them into stunning jewellery.

Here is a short primer of this segment of how we grade these marvels of nature:


Diamonds that exhibit any colour face-up beyond the normal colour range of D-Z on a diamond colour scale are called Fancy colour diamonds.

The colour classification for fancy colour diamonds is on three different axes.

1) Hue: The first primary impression of the colour of the diamond-like red, blue, green, yellow, and brown.
2) Tone: The intensity of darkness or lightness of the colour.
3) Saturation is the uniformity of the colour within the diamond.

C. Krishniah Chetty Laboratory Grading System for Fancy coloured diamonds:

The colour scale system:
Faint, Fancy Light, Fancy, Fancy Intense and Fancy Vivid.

How does a diamond get its colour?

The colours of fancy-coloured diamonds come from the absence or presence of certain elements present within the diamond crystal.
The yellow colour of a diamond is due to the presence of nitrogen molecules.
The blue colour is caused likely due to the presence of boron. In nature, when diamonds are formed or deposited closer to natural radiation sources, a colourless diamond can turn green.

These fabulous rare diamonds come in almost every shade of the colour spectrum.
In order of rarity (most rare to less rare): red, blue, green, pink, purple, yellow and brown. Every colour is
nevertheless candy to the eyes!

Cut: Don't bother too much about the cut in this segment. It's purely colour, colour and colour!

Clarity: Don't bother too much about the clarity of the stone in this segment. It's important, but it is again purely colour, colour and colour!


Certain carat weights in coloured diamonds exhibit better colour in bigger sizes and are worth collecting as they show well when set in jewellery, specially as centre stones.

Expression of colour

C. Krishniah Chetty we describe colour based on well recognised terminology in the diamond fraternity - when a colour is not one shade (which is mostly the case) as a combination of two or more colours are visible in a fancy colour diamond, such colours are described as an adjective for the first colour and a noun for its second colour (i.e., Greenish Yellow, purplish pink, yellowish brown, brownish yellow and so on). The first colour represents the modifying colour, and the second is the primary colour. Diamonds with pure colours without any modifiers are rare and expensive.


Every fancy colour diamond is unique, while their quality and price depend significantly on the colour. Diamonds that exhibit stronger pure or singular colours are more valuable than those with a faint or secondary colour. When buying colour diamonds, it is more on your personal taste, your own appeal, your favourite shape in a diamond (although availability is always low), visible inclusions inside (to a lesser degree), and the design of the jewel that makes a powerful impact on your friends, when they see you wearing the rarest of rare!