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Heart|Natural|GIA

1.50ct J SI2 Heart Natural Diamond

ID • J/SI2 • GIA 1232913339

Certificate GIA 1232913339

Diamond specifications and retailer prices

From £2,490 GBP
As of November 4, 2026
Save £2,941 GBP (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,901 GBP at NZ Jewellers · As of October 9, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1232913339. Listed at 13 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1232913339
Dimensions6.77 × 7.64 × 4.76 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cloud, Needle
Top View
6.77 mm7.64 mm1.50 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232913339
Side View
Table 58.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 62.4%

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 4
Current: £3,363 GBP|Low: £2,490 GBP|High: £5,476 GBP|Avg: £3,428 GBP|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£2,490 GBP
Retailer 9£2,617 GBP
Retailer 3£2,758 GBP
Retailer 10£3,130 GBP
Retailer 1£3,363 GBP
Retailer 6£3,489 GBP
Retailer 7£3,489 GBP
Retailer 8£3,609 GBP
Retailer 2£3,641 GBP
Retailer 4£3,848 GBP
Retailer 5£5,431 GBP

36 data points across 11 retailers

13 retailers£2,490 GBP to £5,431 GBP

A
Cheapest Retailer
-
£2,490 GBP
B+
Retailer 2
-
£2,617 GBP
View
Retailer 3
-
£3,068 GBP
View
Price last confirmed 36 days ago
Retailer 4
-
£3,068 GBP
View
Price last confirmed 27 days ago
B+
Retailer 5
-
£3,130 GBP
View
B+
Retailer 6
-
£3,363 GBP
View
B
Retailer 7
-
£3,489 GBP
View
B
Retailer 8
-
£3,489 GBP
View
Retailer 9
-
£3,541 GBP
View
Price last confirmed 28 days ago
B+
Retailer 10
-
£3,609 GBP
View
B
Retailer 11
-
£3,848 GBP
View
B
Retailer 12
-
£5,431 GBP
View
Most Expensive
NZ Jewellers
0eb2712c-37e1-4bcf-a5c4-38db81d65526 · Oct 9
£5,901 GBP
$7,898 USD
View
Price last confirmed 28 days ago
12 more retailers have this diamond
Prices start from £2,490 GBPSave up to £2,941 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
£2,490 GBP