Round|Natural|GIA

1.24ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2554447601

Certificate GIA 2554447601

Diamond specifications and retailer prices

From £2,559 GBP
As of November 2, 2026
Save £2,412 GBP (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £5,180 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.24ct natural round diamond

This 1.24ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554447601. Listed at 11 retailers as of November 2, 2026, with a 94% 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

1.24
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2554447601
Dimensions6.80 × 6.84 × 4.29 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Cloud, Needle
Top View
6.80 mm6.84 mm1.24 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554447601
Side View
Table 57.0%Crown 36.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.9%

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: Nov 2
Current: £2,992 GBP|Low: £2,391 GBP|High: £4,998 GBP|Avg: £3,092 GBP|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 9£2,391 GBP
Retailer 3£2,530 GBP
Retailer 7£2,559 GBP
Retailer 10£2,589 GBP
Retailer 8£2,693 GBP
Retailer 2£2,880 GBP
Retailer 1£2,992 GBP
Retailer 4£3,350 GBP
Retailer 11£3,365 GBP
Retailer 6£3,654 GBP
Retailer 5£4,971 GBP

16 data points across 11 retailers

11 retailers£2,559 GBP to £4,971 GBP

Retailer 1
-
£2,391 GBP
Price last confirmed 11 days ago
B+
Retailer 2
-
£2,559 GBP
View
B+
Retailer 3
-
£2,589 GBP
View
Retailer 4
-
£2,693 GBP
View
Price last confirmed 44 days ago
Retailer 5
-
£2,693 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,992 GBP
View
Retailer 7
-
£3,108 GBP
View
Price last confirmed 45 days ago
B+
Retailer 8
-
£3,350 GBP
View
B
Retailer 9
-
£3,654 GBP
View
B
Retailer 10
-
£4,971 GBP
View
Most Expensive
NZ Jewellers
1d80d027-7ee0-4cf9-ae4d-33344a7c8665 · Sep 21
£5,180 GBP
$6,933 USD
View
Price last confirmed 46 days ago
10 more retailers have this diamond
Prices start from £2,559 GBPSave up to £2,412 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+
1.24ct Round
£2,559 GBP