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Heart|Natural|GIA

1.31ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 7396858848

Certificate GIA 7396858848

Diamond specifications and retailer prices

From £1,355 GBP
As of November 6, 2026
Save £1,689 GBP (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,044 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.31ct natural heart diamond

This 1.31ct natural heart 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 stated by the retailer rather than the lab and certified by GIA 7396858848. Listed at 19 retailers as of November 2, 2026, with prices from £1,355 to £3,044, a £1,689 spread on the same certified stone. MOH London lists it at £3,044. 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

1.31
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7396858848
Dimensions6.40 × 5.77 × 4.01 mm
L/W Ratio1.11
Top View
6.40 mm5.77 mm1.31 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7396858848
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.6%

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: £3,044 GBP|Low: £1,355 GBP|High: £3,081 GBP|Avg: £1,907 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£1,355 GBP
Retailer 9£1,357 GBP
Retailer 3£1,603 GBP
Retailer 4£1,685 GBP
Retailer 11£1,738 GBP
Retailer 10£1,765 GBP
Retailer 8£1,868 GBP
Retailer 6£1,888 GBP
Retailer 7£2,120 GBP
Retailer 5£2,157 GBP
MOH London£3,044 GBP

28 data points across 11 retailers

19 retailers£1,355 GBP to £3,044 GBP

A
Cheapest Retailer
-
£1,355 GBP
A
Retailer 2
-
£1,357 GBP
View
A
Retailer 3
-
£1,570 GBP
View
A
Retailer 4
-
£1,603 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,685 GBP
View
A
Retailer 6
-
£1,737 GBP
View
Retailer 7
-
£1,738 GBP
View
Price last confirmed 9 days ago
A
Retailer 8
-
£1,765 GBP
View
B+
Retailer 9
-
£1,842 GBP
View
B+
Retailer 10
-
£1,868 GBP
View
B+
Retailer 11
-
£1,885 GBP
View
B+
Retailer 12
-
£1,888 GBP
View
B+
Retailer 13
-
£1,919 GBP
View
B+
Retailer 14
-
£2,120 GBP
View
Retailer 15
-
£2,139 GBP
View
Price last confirmed 31 days ago
B+
Retailer 16
-
£2,157 GBP
View
B
Retailer 17
-
£2,551 GBP
View
B
Retailer 18
-
£2,622 GBP
View
Most Expensive
B
MOH London
64FB601DA · Nov 2
£3,044 GBP
View
18 more retailers have this diamond
Prices start from £1,355 GBPSave up to £1,689 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
1.31ct Heart
£1,355 GBP