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Heart|Natural|GIA

1.50ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 6541674412

Certificate GIA 6541674412

Diamond specifications and retailer prices

From £2,132 GBP
As of November 6, 2026
Save £2,526 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,081 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two 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 6541674412. Listed at 14 retailers as of November 4, 2026, with a 118% 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

1.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle42.1°
OriginNatural
Grading LabGIA
CertificateGIA 6541674412
Dimensions6.88 × 8.04 × 4.65 mm
L/W Ratio1.17
Top View
6.88 mm8.04 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541674412
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 42.1°Culet: NoneDepth 57.9%

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: £2,685 GBP|Low: £2,104 GBP|High: £4,936 GBP|Avg: £3,097 GBP|-4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 13£2,132 GBP
Retailer 2£2,578 GBP
Retailer 11£2,596 GBP
Retailer 10£2,675 GBP
Retailer 1£2,685 GBP
Retailer 7£2,696 GBP
Retailer 4£2,829 GBP
Retailer 6£2,891 GBP
Retailer 5£3,080 GBP
Retailer 3£3,168 GBP
Retailer 8£3,409 GBP
Retailer 12£4,467 GBP
Retailer 9£4,658 GBP

36 data points across 13 retailers

14 retailers£2,132 GBP to £4,658 GBP

A
Cheapest Retailer
-
£2,132 GBP
A
Retailer 2
-
£2,578 GBP
View
Final sale: no returns
B+
Retailer 3
-
£2,596 GBP
View
B+
Retailer 4
-
£2,675 GBP
View
B+
Retailer 5
-
£2,685 GBP
View
B+
Retailer 6
-
£2,696 GBP
View
B+
Retailer 7
-
£2,829 GBP
View
B+
Retailer 8
-
£2,891 GBP
View
Retailer 9
-
£3,080 GBP
View
Price last confirmed 30 days ago
B+
Retailer 10
-
£3,168 GBP
View
B+
Retailer 11
-
£3,409 GBP
View
B
Retailer 12
-
£4,467 GBP
View
B
Retailer 13
-
£4,658 GBP
View
Most Expensive
NZ Jewellers
090fd14f-f327-42ad-af8c-26d56e63b63f · Sep 25
£5,081 GBP
$6,801 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from £2,132 GBPSave up to £2,526 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
1.50ct Heart
£2,132 GBP