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1.29ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 7566055929

Certificate GIA 7566055929

Diamond specifications and retailer prices

From £2,062 GBP
As of November 4, 2026
Save £2,143 GBP (51%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,205 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.29ct natural round diamond

This 1.29ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7566055929. Listed at 7 retailers as of November 4, 2026, with prices from £2,062 to £4,205, a £2,143 spread on the same certified stone. MOH London lists it at £4,205. 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

1.29
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7566055929
Dimensions6.95 × 6.96 × 4.33 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
6.95 mm6.96 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566055929
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.2%

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 4
Current: £4,205 GBP|Low: £2,062 GBP|High: £4,238 GBP|Avg: £2,800 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£2,062 GBP
Retailer 6£2,150 GBP
Retailer 2£2,573 GBP
Retailer 3£2,592 GBP
Retailer 7£2,781 GBP
Retailer 4£2,928 GBP
MOH London£4,205 GBP

22 data points across 7 retailers

7 retailers£2,062 GBP to £4,205 GBP

B+
Cheapest Retailer
-
£2,062 GBP
B+
Retailer 2
-
£2,150 GBP
View
B+
Retailer 3
-
£2,573 GBP
View
B+
Retailer 4
-
£2,592 GBP
View
B
Retailer 5
-
£2,781 GBP
View
B+
Retailer 6
-
£2,928 GBP
View
Most Expensive
B
MOH London
A73F19F67 · Nov 4
£4,205 GBP
View
6 more retailers have this diamond
Prices start from £2,062 GBPSave up to £2,143 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+
1.29ct Round
£2,062 GBP