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Round|Natural|GIA

4.00ct N SI2 Round Natural Diamond

EX • N/SI2 • GIA 2557519828

Certificate GIA 2557519828

Diamond specifications and retailer prices

From £16,047 GBP
As of November 5, 2026
Save £2,837 GBP (15%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £18,885 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 4ct natural round diamond

This 4ct natural round sits in the three to five carat band, graded N colour (tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557519828. Listed at 7 retailers as of November 5, 2026, with prices from £16,047 to £18,885, a £2,837 spread on the same certified stone. NZ Jewellers lists it at £18,885. 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

4.00
Carat
N
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557519828
Dimensions10.15 × 10.12 × 6.33 mm
L/W Ratio1.00
Top View
10.15 mm10.12 mm4.00 ctN / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557519828
Side View
Table 56.0%CrownGirdlePavilionCuletDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £18,885 GBP|Low: £15,049 GBP|High: £18,885 GBP|Avg: £15,888 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 3£15,049 GBP
Retailer 2£16,047 GBP
Retailer 4£16,208 GBP
NZ Jewellers£18,885 GBP

23 data points across 4 retailers

7 retailers£16,047 GBP to £18,885 GBP

Retailer 1
-
£15,049 GBP
Price last confirmed 29 days ago
Retailer 2
-
£15,049 GBP
View
Price last confirmed 8 days ago
Retailer 3
-
£15,801 GBP
View
Price last confirmed 38 days ago
B+
Retailer 4
-
£16,047 GBP
View
Retailer 5
-
£16,303 GBP
View
Price last confirmed 33 days ago
Retailer 6
-
£16,930 GBP
View
Price last confirmed 67 days ago
Most Expensive
B
NZ Jewellers
57d784d4-381b-4fc0-846f-edc58ee3fb0b · Nov 5
£18,885 GBP
$25,417 USD
View
6 more retailers have this diamond
Prices start from £16,047 GBPSave up to £2,837 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.

B+
4.00ct Round
£16,047 GBP