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Heart|Natural|GIA

1.31ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 7541510309

Certificate GIA 7541510309

Diamond specifications and retailer prices

From £2,017 GBP
As of November 6, 2026
Save £2,595 GBP (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,057 GBP at Queensmith · As of October 28, 2026
View at Queensmith

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7541510309. Listed at 21 retailers as of November 5, 2026, with a 129% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7541510309
Dimensions7.71 × 6.91 × 4.42 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.71 mm6.91 mm1.31 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7541510309
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 57.3%

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: £5,057 GBP|Low: £2,017 GBP|High: £5,071 GBP|Avg: £3,155 GBP|+2.7%
Queensmith
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 6, 2026
Retailer 12£2,017 GBP
Retailer 2£2,102 GBP
Retailer 13£2,548 GBP
Retailer 7£2,568 GBP
Retailer 6£2,647 GBP
Retailer 14£2,647 GBP
Retailer 9£2,739 GBP
Retailer 3£2,749 GBP
Retailer 8£2,805 GBP
Retailer 4£3,054 GBP
Retailer 10£3,231 GBP
Retailer 11£4,415 GBP
Retailer 5£4,612 GBP
Queensmith£5,057 GBP

26 data points across 14 retailers

21 retailers£2,017 GBP to £4,612 GBP

A
Cheapest Retailer
-
£2,017 GBP
A
Retailer 2
-
£2,102 GBP
View
A
Retailer 3
-
£2,408 GBP
View
A
Retailer 4
-
£2,443 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,533 GBP
View
A
Retailer 6
-
£2,548 GBP
View
A
Retailer 7
-
£2,568 GBP
View
Retailer 8
-
£2,647 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£2,647 GBP
View
A
Retailer 10
-
£2,739 GBP
View
A
Retailer 11
-
£2,749 GBP
View
A
Retailer 12
-
£2,755 GBP
View
A
Retailer 13
-
£2,772 GBP
View
A
Retailer 14
-
£2,805 GBP
View
Retailer 15
-
£2,835 GBP
View
Price last confirmed 29 days ago
A
Retailer 16
-
£2,838 GBP
View
A
Retailer 17
-
£3,054 GBP
View
B+
Retailer 18
-
£3,231 GBP
View
B+
Retailer 19
-
£4,415 GBP
View
B
Retailer 20
-
£4,612 GBP
View
Most Expensive
Queensmith
7541510309 · Oct 28
£5,057 GBP
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from £2,017 GBPSave up to £2,595 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
£2,017 GBP