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Round|Natural|GIA

3.03ct K SI2 Round Natural Diamond

EX • K/SI2

Diamond specifications and retailer prices

From £13,156 GBP
As of November 4, 2026
Save £4,572 GBP (26%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £17,728 GBP at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 3.03ct natural round diamond

This 3.03ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 5 retailers as of November 4, 2026, with prices from £13,156 to £17,728, a £4,572 spread on the same certified stone. The Diamond Guys lists it at £17,728. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.03
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions9.15 × 9.22 × 5.74 mm
L/W Ratio1.01
Top View
9.15 mm9.22 mm3.03 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £13,156 GBP|Low: £13,156 GBP|High: £22,479 GBP|Avg: £16,981 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
The Diamond Guys
October 29, 2026
Retailer 1£13,156 GBP
Retailer 3£15,525 GBP
Retailer 2£15,895 GBP
Retailer 5£16,193 GBP
Retailer 6£16,816 GBP
The Diamond Guys£17,728 GBP
Retailer 4£22,479 GBP

6 data points across 7 retailers

5 retailers£13,156 GBP to £17,728 GBP

A
Cheapest Retailer
-
£13,156 GBP
B+
Retailer 2
-
£15,525 GBP
View
B+
Retailer 3
-
£15,895 GBP
View
B+
Retailer 4
-
£16,787 GBP
View
Most Expensive
B
The Diamond Guys
1972714099 · Nov 6
£17,728 GBP
$23,861 USD
View
4 more retailers have this diamond
Prices start from £13,156 GBPSave up to £4,572 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.03ct Round
£13,156 GBP