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Round|Natural|GIA

4.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1182031705

Certificate GIA 1182031705

Diamond specifications and retailer prices

From £30,118 GBP
$40,355 USD
As of November 1, 2026
Save £24,499 GBP (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £54,617 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 4ct natural round diamond

This 4ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1182031705. Listed at 11 retailers as of November 1, 2026, with prices from £30,118 to £54,617, a £24,499 spread on the same certified stone. MOH London lists it at £54,617. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1182031705
Dimensions10.18 × 10.16 × 6.29 mm
L/W Ratio1.00
Culet sizeNone
Top View
10.18 mm10.16 mm4.00 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1182031705
Side View
Table 57.0%Crown 35°Girdle: THN-THKPavilion 41°Culet: NoneDepth 61.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £54,617 GBP|Low: £30,118 GBP|High: £57,410 GBP|Avg: £37,056 GBP|-4.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 5£30,118 GBP
Retailer 10£31,590 GBP
Retailer 11£31,938 GBP
Retailer 9£32,032 GBP
Retailer 8£33,486 GBP
Retailer 4£34,987 GBP
Retailer 3£36,346 GBP
Retailer 6£36,346 GBP
Retailer 7£37,555 GBP
Retailer 2£40,946 GBP
MOH London£54,617 GBP

40 data points across 11 retailers

11 retailers£30,118 GBP to £54,617 GBP

A
Cheapest Retailer
-
£30,118 GBP
$40,355 USD
A
Retailer 2
-
£31,590 GBP
$42,327 USD
View
A
Retailer 3
-
£31,938 GBP
$42,793 USD
View
A
Retailer 4
-
£32,032 GBP
$42,920 USD
View
Retailer 5
-
£33,486 GBP
A$69,027 AUD
View
Price last confirmed 28 days ago
B+
Retailer 6
-
£34,987 GBP
View
B+
Retailer 7
-
£36,346 GBP
$48,700 USD
View
B+
Retailer 8
-
£36,346 GBP
$48,700 USD
View
B+
Retailer 9
-
£37,555 GBP
$50,320 USD
View
B+
Retailer 10
-
£40,946 GBP
€52,251 EUR
View
Most Expensive
B
MOH London
AE8168CD0 · Nov 1
£54,617 GBP
View
10 more retailers have this diamond
Prices start from £30,118 GBPSave up to £24,499 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
4.00ct Round
£30,118 GBP