Responsibly Sourced
Our Diamonds
Holts Gems are proud suppliers of GIA certified diamonds in Hatton Garden. Graded by the world’s most renowned, independent and not-for-profit grading laboratory, our diamonds are hand selected by our qualified gemmologists to suit each individual budget and personal requirements. Learn more about diamonds below.
The 4Cs
Diamond Pricing
Diamond Shapes
Certification
Responsibly Sourced
How to choose the perfect diamond.
We’re here to help you find the right diamond for your engagement ring. Our qualified gemmologists are on hand to find you the perfect diamond within your budget.
Diamond Grading
Learn about the 4Cs
Choosing a diamond for your engagement ring is a big commitment, but how do you know you’ve found the perfect stone? Before buying a diamond, we’d always recommend you have a good grasp of the 4Cs, and how a diamond’s characteristics are graded.
Cut
According to the GIA, a diamond’s cut is what gives it its ‘wow factor’.
“A beautifully finished (cut) diamond is dazzling; every facet displays the craftsman’s skill and care. When it interacts with light, each facet and angle affects the amount of light returned to the eye. This is what gives a diamond its face-up appearance and what makes it appealing – or not.” - GIA
Colour
A diamond is graded on its absence of colour - the less colour, the better.
“A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value… Many of these diamond color distinctions are so subtle that they are invisible to the untrained eye; however, these distinctions make a very big difference in diamond quality and price.” - GIA
Clarity
Nearly every diamond contains small blemishes that form with the diamond, called ‘inclusions’.
“Evaluating diamond clarity involves determining the number, size, relief, nature, and position of these characteristics, as well as how these affect the overall appearance of the stone. While no diamond is perfectly pure, the closer it comes, the higher its value.” - GIA
Carat Weight
A diamond’s carat is a measurement of its weight - and is indicative of how big the diamond will look, although badly cut diamonds can appear smaller or larger but dull compared to an ‘excellent’ cut of the same weight.
“All else being equal, diamond price increases with diamond carat weight because larger diamonds are rarer and more desirable.” - GIA
Diamond Cost
Learn about diamond pricing
Graded by the GIA, each diamond we supply is priced depending on its independently graded characteristics. The indicative prices below are based on GIA grading standards.
Pricing based on a GIA Certified Round Brilliant, Excellent Cut, Polish, Symmetry with Nil Fluorescence. Available to view in London.
Diamond Shapes
Diamonds can be cut in to a range of shapes, usually chosen to best optimise the qualities of the rough diamond. Find the right shape to suit your taste, or get in touch to learn about other, unique shaped diamonds.
Diamond Certification
GIA Certified Diamonds
At Holts Gems, we only supply GIA certified diamonds, because we want to ensure each part of your diamond engagement ring is of the highest quality possible.
Responsibly Sourced
As well as sourcing GIA diamonds, we support the UK’s involvement in the Kimberley Process, which has now ensured that 99.8% of diamonds in the global market are conflict free.
NEXT STEP
Connect with our experts
Whether you’re ready to begin the process of finding the perfect diamond, or would like a little more info, we’re here to help. Book an appointment or get in touch to speak with one of our experts.
