Round|Natural|GIA

1.01ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2235744839

Certificate GIA 2235744839

Diamond specifications and retailer prices

From £2,317 GBP
As of November 4, 2026
Save £2,041 GBP (47%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £5,254 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2235744839. Listed at 24 retailers as of November 4, 2026, with a 88% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2235744839
Dimensions6.42 × 6.39 × 3.92 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Top View
6.42 mm6.39 mm1.01 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2235744839
Side View
Table 60.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 61.3%

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: £3,299 GBP|Low: £2,320 GBP|High: £5,104 GBP|Avg: £3,260 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8£2,320 GBP
Retailer 6£2,398 GBP
Retailer 5£2,478 GBP
Retailer 7£3,233 GBP
Retailer 1£3,299 GBP
Retailer 2£3,406 GBP
Retailer 3£3,672 GBP
Retailer 4£5,050 GBP

42 data points across 8 retailers

24 retailers£2,317 GBP to £4,358 GBP

A
Cheapest Retailer
-
£2,317 GBP
A
Retailer 2
-
£2,320 GBP
View
A
Retailer 3
-
£2,356 GBP
View
B+
Retailer 4
-
£2,398 GBP
View
Final sale: no returns
Retailer 5
-
£2,425 GBP
View
Price last confirmed 11 days ago
Retailer 6
-
£2,478 GBP
View
Price last confirmed 16 days ago
B+
Retailer 7
-
£2,506 GBP
View
B+
Retailer 8
-
£2,595 GBP
View
Retailer 9
-
£2,619 GBP
View
Price last confirmed 9 days ago
Retailer 10
-
£2,732 GBP
View
Price last confirmed 12 days ago
Retailer 11
-
£2,732 GBP
View
Price last confirmed 11 days ago
Retailer 12
-
£2,837 GBP
View
Price last confirmed 12 days ago
B+
Retailer 13
-
£2,972 GBP
View
B+
Retailer 14
-
£2,972 GBP
View
Retailer 15
-
£3,153 GBP
View
Price last confirmed 10 days ago
Retailer 16
-
£3,233 GBP
View
Price last confirmed 33 days ago
B+
Retailer 17
-
£3,299 GBP
View
B
Retailer 18
-
£3,406 GBP
View
Retailer 19
-
£3,413 GBP
View
Price last confirmed 14 days ago
B
Retailer 20
-
£3,546 GBP
View
Retailer 21
-
£3,672 GBP
View
Price last confirmed 10 days ago
B
Retailer 22
-
£4,358 GBP
View
Retailer 23
-
£5,050 GBP
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
c0818bf7-ec9d-401f-a610-d17e4e106c93 · Oct 27
£5,254 GBP
$7,071 USD
View
Price last confirmed 10 days ago
23 more retailers have this diamond
Prices start from £2,317 GBPSave up to £2,041 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
1.01ct Round
£2,317 GBP