Round|Natural|GIA

1.24ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 5234101365

Certificate GIA 5234101365

Diamond specifications and retailer prices

From £1,178 GBP
As of November 5, 2026
Save £328 GBP (22%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,708 GBP at NZ Jewellers · As of September 26, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5234101365. Listed at 8 retailers as of November 5, 2026, with a 28% 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5234101365
Dimensions6.79 × 6.84 × 4.28 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.79 mm6.84 mm1.24 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5234101365
Side View
Table 58.0%Crown 35.5°GirdlePavilion 41.2°Culet: NoneDepth 62.8%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £1,355 GBP|Low: £1,101 GBP|High: £1,516 GBP|Avg: £1,225 GBP|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6£1,101 GBP
Retailer 4£1,111 GBP
Retailer 5£1,111 GBP
Retailer 3£1,178 GBP
Retailer 1£1,355 GBP
Retailer 2£1,506 GBP

25 data points across 6 retailers

8 retailers£1,178 GBP to £1,506 GBP

Retailer 1
-
£1,111 GBP
Price last confirmed 29 days ago
Retailer 2
-
£1,111 GBP
View
Price last confirmed 29 days ago
Retailer 3
-
£1,162 GBP
View
Price last confirmed 38 days ago
B+
Retailer 4
-
£1,178 GBP
View
Retailer 5
-
£1,281 GBP
View
Price last confirmed 38 days ago
B+
Retailer 6
-
£1,355 GBP
View
B+
Retailer 7
-
£1,506 GBP
View
Most Expensive
NZ Jewellers
072f1001-0988-4506-9f5d-c0eeeb5c4326 · Sep 26
£2,708 GBP
$3,645 USD
View
Price last confirmed 40 days ago
7 more retailers have this diamond
Prices start from £1,178 GBPSave up to £328 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
£1,178 GBP