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Heart|Natural|GIA

1.50ct J SI1 Heart Natural Diamond

ID • J/SI1 • GIA 1246087081

Certificate GIA 1246087081

Diamond specifications and retailer prices

From £2,140 GBP
HK$22,400 HKD
As of November 1, 2026
Save £3,007 GBP (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,147 GBP at NZ Jewellers · As of October 30, 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 1246087081. Listed at 14 retailers as of October 30, 2026, with prices from £2,140 to £5,147, a £3,007 spread on the same certified stone. NZ Jewellers lists it at £5,147. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1246087081
Dimensions6.94 × 7.89 × 4.60 mm
L/W Ratio1.14
Girdle conditionFaceted
Top View
6.94 mm7.89 mm1.50 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1246087081
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.3%

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 1
Current: £5,147 GBP|Low: £2,140 GBP|High: £5,647 GBP|Avg: £3,400 GBP|-8.9%
NZ Jewellers
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 10£2,140 GBP
Retailer 8£2,611 GBP
Retailer 14£2,631 GBP
Retailer 6£2,722 GBP
Retailer 2£2,745 GBP
Retailer 7£2,800 GBP
Retailer 11£2,823 GBP
Retailer 5£2,859 GBP
Retailer 3£3,125 GBP
Retailer 9£3,299 GBP
Retailer 13£3,631 GBP
Retailer 4£4,522 GBP
Retailer 12£4,906 GBP
NZ Jewellers£5,147 GBP

20 data points across 14 retailers

14 retailers£2,140 GBP to £5,147 GBP

A
Cheapest Retailer
-
£2,140 GBP
HK$22,400 HKD
A
Retailer 2
-
£2,611 GBP
$3,498 USD
View
A
Retailer 3
-
£2,631 GBP
$3,525 USD
View
B+
Retailer 4
-
£2,722 GBP
SGD 4,929 SGD
View
B+
Retailer 5
-
£2,745 GBP
$3,678 USD
View
Final sale: no returns
B+
Retailer 6
-
£2,800 GBP
View
B+
Retailer 7
-
£2,823 GBP
View
B+
Retailer 8
-
£2,859 GBP
$3,831 USD
View
B+
Retailer 9
-
£3,125 GBP
$4,187 USD
View
B+
Retailer 10
-
£3,299 GBP
$4,420 USD
View
B+
Retailer 11
-
£3,631 GBP
ZAR 78,599 ZAR
View
B
Retailer 12
-
£4,522 GBP
$6,059 USD
View
B
Retailer 13
-
£4,906 GBP
View
Most Expensive
B
NZ Jewellers
3b084430-3c5d-4cdd-ab7a-9928d8fe2a22 · Oct 30
£5,147 GBP
$6,896 USD
View
13 more retailers have this diamond
Prices start from £2,140 GBPSave up to £3,007 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
£2,140 GBP