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Round|Natural|GIA

4.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 5466107656

Certificate GIA 5466107656

Diamond specifications and retailer prices

From £38,873 GBP
$52,085 USD
As of October 31, 2026
Save £9,371 GBP (19%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £48,243 GBP at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 5466107656. Listed at 4 retailers as of October 31, 2026, with prices from £38,873 to £48,243, a £9,371 spread on the same certified stone. 77 Diamonds lists it at £48,243. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5466107656
Dimensions10.21 × 10.13 × 6.16 mm
L/W Ratio1.01
Star length50%
Top View
10.21 mm10.13 mm4.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5466107656
Side View
Table 60.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 60.8%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £48,243 GBP|Low: £38,873 GBP|High: £50,113 GBP|Avg: £42,421 GBP|-1.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2£38,873 GBP
Retailer 3£39,339 GBP
Retailer 4£41,166 GBP
77 Diamonds£48,243 GBP

31 data points across 4 retailers

4 retailers£38,873 GBP to £48,243 GBP

B+
Cheapest Retailer
-
£38,873 GBP
$52,085 USD
B+
Retailer 2
-
£39,339 GBP
$52,710 USD
View
B+
Retailer 3
-
£41,166 GBP
$55,158 USD
View
Most Expensive
B
77 Diamonds
RBZA5WVEJUH · Nov 1
£48,243 GBP
View
3 more retailers have this diamond
Prices start from £38,873 GBPSave up to £9,371 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
£38,873 GBP