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Round|Natural|GIA

1.25ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6243063402

Certificate GIA 6243063402

Diamond specifications and retailer prices

From £2,834 GBP
As of November 4, 2026
Save £3,297 GBP (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,560 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6243063402. Listed at 11 retailers as of November 4, 2026, with a 116% 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

1.25
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6243063402
Dimensions6.83 × 6.86 × 4.26 mm
L/W Ratio1.00
Key to symbols
Crystal, Cloud, Needle
Top View
6.83 mm6.86 mm1.25 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6243063402
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.2%

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 4
Current: £6,560 GBP|Low: £2,806 GBP|High: £6,664 GBP|Avg: £4,207 GBP|-1.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 8£2,834 GBP
Retailer 6£3,216 GBP
Retailer 7£3,349 GBP
Retailer 10£3,632 GBP
Retailer 2£3,690 GBP
Retailer 11£3,922 GBP
Retailer 3£3,953 GBP
Retailer 9£4,085 GBP
Retailer 4£4,245 GBP
Retailer 5£6,130 GBP
NZ Jewellers£6,560 GBP

31 data points across 11 retailers

11 retailers£2,834 GBP to £6,130 GBP

A
Cheapest Retailer
-
£2,834 GBP
A
Retailer 2
-
£3,216 GBP
View
A
Retailer 3
-
£3,349 GBP
View
Retailer 4
-
£3,632 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£3,690 GBP
View
Retailer 6
-
£3,922 GBP
View
Price last confirmed 17 days ago
Retailer 7
-
£3,953 GBP
View
Price last confirmed 22 days ago
B+
Retailer 8
-
£4,085 GBP
View
B+
Retailer 9
-
£4,245 GBP
View
B
Retailer 10
-
£6,130 GBP
View
Most Expensive
NZ Jewellers
ef11475f-233b-4e89-8447-d2c38c0cf30a · Oct 20
£6,560 GBP
$8,829 USD
View
Price last confirmed 16 days ago
10 more retailers have this diamond
Prices start from £2,834 GBPSave up to £3,297 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
1.25ct Round
£2,834 GBP