The 4 C's
	Carat  This is the unit of weight measurement for gemstones. 1 carat  = 200mg or 0.2g. The carat is further sub-divided into points, with 100 points = 1carat .A one carat diamond in a well proportioned brilliant cut measures about 6.5mm in diameter.
Sherry Jewellery can help you make a choice, based upon your own preferences and budget. Whilst we generally supply above average quality of material for one-off pieces, all grades are available to you.

Colour   Diamonds are considered to be the most desirable, if they are colourless or pure white. Colour grading for diamonds is by means of letter, ranging from D for colourless, through to Z for yellow/brown stones. These letters are recognised universally. Sherry Jewellery generally uses F to I colours but all grades can be supplied.

Trade Terms		Old Terms
Blue White	D	River
Fine White	E	Top Wesselton
Fine White	F	Top Wesselton
White	G	Wesselton
Commercial White	H	Top Crystal
Top silver Cape	I	Crystal
silver Cape	J	Top Cape
silver Cape	K	Top Cape
Cape	L	Cape
	M
	N
Light Cape	O	Light Yellow
	P
	Q
Dark Cape	R	Yellow
	S-X

	Cut Cut describes the way that the stone is facetted’ in order to bring out the beauty and reflected colour. The skill of the individual diamond cutter is very important to the final look of the diamond. A well proportioned diamond will allow light to enter the stone, be refracted
around and back to the eye. The cut is sometimes referred to as the “make” Here at Sherry Jewellery we believe this to be often over looked feature when selecting to a certain budget.

 

	Clarity  Diamonds are made of carbon. Within each diamond, there are often traces of none crystallised carbon’ which are termed as “inclusions” The fewer inclusions, within a diamond the greater the value of the stone. Sherry Jewellery can help you make a choice, based upon
your own preferences and budget. Following an enquiry, a selectionof diamonds can be viewed to help assist you in your decision. Whilst we generally sell above average quality diamonds for one-off pieces, we can show you all types of grade to suit your diamond budget.

Internally Flawless	IF	Free of inclusions under X 10 magnification
Very, Very small Inclusions	VVS	Very few, very small inclusions under X 10 magnification difficult to find
Very small Inclusions	VS	Some small inclusions recognised by an expert under X 10 magnification
small Inclusions	SI	Several small inclusions easily recognised  under X 10 magnification
1st Pique	P1	Inclusions recognised at once under X 10 magnification but not diminishing the  brilliance appreciably
2nd Pique	P2	Large and/or many inclusions slightly  diminishing the brilliance, recognisable with the naked eye
3rd Pique	P3	Large and/or many inclusions diminishing the brilliance