Certified Natural Diamonds

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Natural Diamonds

Discover GIA and IGI certified conflict-free natural diamonds, perfect for your engagement ring, of the highest quality, using our exclusive search feature. Explore a wide selection of options and refine your choice using filters for shape, cut, colour, clarity, carat weight ...

Natural Diamonds Lab Grown Diamonds

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Choose a Setting

Your Ring

Diamond Shape

What Is A Diamond Shape?

Shape refers to the geometric outline and overall physical shape of a diamond. Each diamond shape has its own specific characteristics that play an important role in the overall appearance of the stone.

Round

Princess

Cushion

Oval

Radiant

Pear

Emerald

Marquise

Asscher

Heart

Cut

Diamond Cut

Good
Very Good
Excellent
Ideal

Good cut: Quality at a lower price than a very good cut, still producing a beautiful diamond for the budget-minded.

Very Good cut: It gives the Diamond slightly less fire and brilliance than an ideally cut diamond, at a more affordable price.

Excellent cut: They shine with magnificent sparkle, fire and brilliance as almost all incoming light is reflected through their table.

Ideal cut: Highest cut grade. Its proportions produce a beautiful balance of fire and sparkle in a diamond.

Why 3EX Diamond

Good Very Good Excellent Ideal

Carat

Carat (ct.)

The international unit of weight, used for measuring diamonds and gemstones. 1 carat is equal to 200 milligrams, or 0.2 grams.

Colour

Diamond Colour

L colour: L-colour diamonds are considered to be in the "near colourless" range. This means that while there may be a slight tint of colour, it's typically not very noticeable to the naked eye, especially when viewed in isolation.

K colour: The first of the "faint" colour grades, meaning colour may be detectable to the naked eye. K-colour diamonds can offer great value.

J colour: The last of the "near-colourless" grades, colour may be slightly detectable to unaided eye, particularly in fancy shapes/diamonds over 1-carat.

I colour: Colour may be only slightly detectable upon close examination. Exceptional value.

H colour: This is considered within the "near-colourless" range. Colour is only noticeable when compared to much higher Color grades. Excellent value.

G colour: The highest "near-colourless" grade. Colour may be detectable when compared to much higher "colourless" grades. Excellent value.

F colour: A "colourless" grade appreciated best set in platinum or white gold. Faint colour detectable by a trained gemologist.

E colour: A "colourless" grade appreciated best set in platinum or white gold. Traces of colour difficult for even trained eye to detect.

D colour: Highest, absolutely "colourless" grade, appreciated best set in platinum or white gold. Exceptionally rare.

Clarity

Diamond Clarity

I3
I1-I2
SI1-S12
VS1-VS2
VVS1-VVS2
IF

I3: The inclusions are very evident and can seriously compromise the appearance of the diamond.

I1: They include inclusions that are easily visible to the naked eye and can affect transparency and brilliance.

I2: The inclusions are very visible and significantly affect the brilliance and transparency.

SI1: Inclusions easily detectable at 10x but not with the naked eye.

S12: Diffuse inclusions, easily identifiable at 10x but not with the naked eye.

VS1: Inclusion very difficult to spot in 10x by an expert.

VS2: Inclusion difficult to spot in 10x by an expert.

VVS1-VVS2: Almost pure, extremely small and decentralized inclusion.

Flawless: Pure, no inclusions.

SI2

SI1

VS2

VS1

VVS2

VVS1

Price

L/W ratio

The L/W ratio (length/width) indicates the proportion between the length and width of a diamond when viewed from above. A value of 1 represents a diamond with symmetrical proportions, ideal for round or square cuts. A higher value indicates a more elongated diamond, such as a pear or oval cut. If the diamond has a high L/W ratio, it will have a more elongated shape compared to a diamond with a lower ratio, which may be more balanced or squared.

Fluorescence

Diamond, subjected to ultraviolet (UV) light, has a luminous reaction. Usually, diamond emits blue light. This characteristic can be weak or strong and can slightly affect the appearance of the diamond.

None Faint Medium Strong

Polish

It refers to the quality of the smoothing and polishing of its surfaces. A good finish makes the diamond more brilliant and attractive by improving the way it reflects light.

Why 3EX Diamond

Very Good Good Excellent

Symmetry

The symmetry of a diamond's cut concerns the alignment and proportion of its facets. Good symmetry improves brilliance, while flaws such as misaligned facets can reduce the diamond's value.

Why 3EX Diamond

Very Good Good Excellent

Certification

The GIA (Gemological Institute of America) and the IGI (International Gemological Institute) are the leading diamond certification institutions in the world, providing reliable evaluations based on the 4Cs (Carat, Cut, Colour, Clarity). The GIA excels in diamond research and classification, while the IGI is the most widespread and accessible globally.

Diamond Certification

IGI

GCAL

GIA

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How does it affect the economic value of natural diamond in relation to its 4Cs?

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Ideal

Excellent

Very Good

D To F

G To J

K To M

FL/IF and VVS1/VVS2

VS1/VS2 and SI1/SI2

I1/I2/I3

2 and above

1.5 ct To 1.99

0.5 ct To 1.49

Higher Price Range

Lower Price Range

The 5 Main Advantages Of Loose Diamonds

We are committed to offering our customers the highest quality diamonds. We source our diamonds from reliable suppliers around the world and carry out a thorough inspection of each diamond to ensure it meets our high quality standards.

Everything You Need To Know Before Buying A Natural Diamond

The 4Cs of diamonds

Certifications

Budget

Origin of diamonds

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Natural Diamonds

Diamond Shape

What Is A Diamond Shape?

Diamond Cut

Carat (ct.)

Diamond Colour

Diamond Clarity

L/W ratio

Fluorescence

Polish

Symmetry

Certification

The Diamond Specialist at Your Side!

How does it affect the economic value of natural diamond in relation to its 4Cs?

The 5 Main Advantages Of Loose Diamonds

Everything You Need To Know Before Buying A Natural Diamond

Find The Perfect Piece In Our Online Store

Natural Diamonds

Diamond Shape

What Is A Diamond Shape?

Diamond Cut

Carat (ct.)

Diamond Colour

Diamond Clarity

L/W ratio

Fluorescence

Polish

Symmetry

Certification

Additional Details

The Diamond Specialist at Your Side!

How does it affect the economic value of natural diamond in relation to its 4Cs?

The 5 Main Advantages Of Loose Diamonds

Everything You Need To Know Before Buying A Natural Diamond

Find The Perfect Piece In Our Online Store