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Round|Natural|GIA

1.24ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1558379614

Certificate GIA 1558379614

Diamond specifications and retailer prices

From £1,539 GBP
As of November 6, 2026
Save £2,165 GBP (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,672 GBP at NZ Jewellers · As of September 28, 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 1558379614. Listed at 11 retailers as of November 2, 2026, with a 141% 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
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558379614
Dimensions6.83 × 6.77 × 4.26 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Needle
Top View
6.83 mm6.77 mm1.24 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558379614
Side View
Table 57.0%CrownGirdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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 6
Current: £2,170 GBP|Low: £1,539 GBP|High: £3,782 GBP|Avg: £2,365 GBP|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£1,539 GBP
Retailer 4£1,834 GBP
Retailer 8£1,907 GBP
Retailer 7£2,114 GBP
Retailer 3£2,142 GBP
Retailer 1£2,170 GBP
Retailer 5£2,440 GBP
Retailer 9£3,239 GBP
Retailer 6£3,704 GBP

45 data points across 9 retailers

11 retailers£1,539 GBP to £3,704 GBP

A
Cheapest Retailer
-
£1,539 GBP
A
Retailer 2
-
£1,834 GBP
View
A
Retailer 3
-
£1,907 GBP
View
A
Retailer 4
-
£2,114 GBP
View
A
Retailer 5
-
£2,142 GBP
View
A
Retailer 6
-
£2,170 GBP
View
Retailer 7
-
£2,235 GBP
View
Price last confirmed 39 days ago
B+
Retailer 8
-
£2,440 GBP
View
Retailer 9
-
£3,239 GBP
View
Price last confirmed 13 days ago
B
Retailer 10
-
£3,704 GBP
View
Most Expensive
NZ Jewellers
e717abd7-813a-4d72-affb-02ee39b09de5 · Sep 28
£4,672 GBP
$6,253 USD
View
Price last confirmed 39 days ago
10 more retailers have this diamond
Prices start from £1,539 GBPSave up to £2,165 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
1.24ct Round
£1,539 GBP