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1.24ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6551050710

Certificate GIA 6551050710

Diamond specifications and retailer prices

From £2,127 GBP
As of November 2, 2026
Save £1,572 GBP (42%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,699 GBP at MOH London · As of November 2, 2026
View at MOH London

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 6551050710. Listed at 7 retailers as of November 2, 2026, with prices from £2,127 to £3,699, a £1,572 spread on the same certified stone. MOH London lists it at £3,699. 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°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6551050710
Dimensions6.80 × 6.84 × 4.25 mm
L/W Ratio1.01
Star length50%
Top View
6.80 mm6.84 mm1.24 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551050710
Side View
Table 59.0%Crown 36°Girdle: Slightly ThickPavilion 41°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 2
Current: £3,699 GBP|Low: £2,127 GBP|High: £4,585 GBP|Avg: £2,782 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 7£2,127 GBP
Retailer 11£2,159 GBP
Retailer 2£2,297 GBP
Retailer 8£2,350 GBP
Retailer 13£2,350 GBP
Retailer 3£2,366 GBP
Retailer 6£2,366 GBP
Retailer 9£2,472 GBP
Retailer 4£2,548 GBP
Retailer 14£2,563 GBP
Retailer 10£2,718 GBP
Retailer 12£3,459 GBP
MOH London£3,699 GBP
Retailer 5£4,123 GBP

8 data points across 14 retailers

7 retailers£2,127 GBP to £3,699 GBP

A
Cheapest Retailer
-
£2,127 GBP
A
Retailer 2
-
£2,159 GBP
View
B+
Retailer 3
-
£2,297 GBP
View
B+
Retailer 4
-
£2,350 GBP
View
B+
Retailer 5
-
£2,472 GBP
View
B+
Retailer 6
-
£2,718 GBP
View
Most Expensive
B
MOH London
A38320EFD · Nov 2
£3,699 GBP
View
6 more retailers have this diamond
Prices start from £2,127 GBPSave up to £1,572 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
£2,127 GBP