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Heart|Natural|GIA

1.50ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6531733069

Certificate GIA 6531733069

Diamond specifications and retailer prices

From £1,946 GBP
HK$20,400 HKD
As of November 1, 2026
Save £2,321 GBP (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,445 GBP at NZ Jewellers · As of October 18, 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 I 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 6531733069. Listed at 16 retailers as of November 1, 2026, with a 119% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6531733069
Dimensions7.08 × 7.74 × 4.77 mm
L/W Ratio1.09
Top View
7.08 mm7.74 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6531733069
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.6%

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 1
Current: £4,445 GBP|Low: £1,927 GBP|High: £4,734 GBP|Avg: £2,817 GBP
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
November 2, 2026
Retailer 10£1,946 GBP
Retailer 7£2,082 GBP
Retailer 11£2,144 GBP
Retailer 8£2,489 GBP
Retailer 12£2,552 GBP
Retailer 13£2,552 GBP
Retailer 4£2,659 GBP
Retailer 6£2,666 GBP
Retailer 5£2,704 GBP
Retailer 3£2,944 GBP
Retailer 2£2,986 GBP
Retailer 9£4,267 GBP
NZ Jewellers£4,445 GBP

29 data points across 13 retailers

16 retailers£1,946 GBP to £4,267 GBP

A
Cheapest Retailer
-
£1,946 GBP
HK$20,400 HKD
A
Retailer 2
-
£2,082 GBP
₹266,082 INR
View
A
Retailer 3
-
£2,144 GBP
SGD 3,888 SGD
View
A
Retailer 4
-
£2,489 GBP
View
Retailer 5
-
£2,552 GBP
$3,424 USD
View
Price last confirmed 17 days ago
Retailer 6
-
£2,552 GBP
$3,424 USD
View
Price last confirmed 15 days ago
A
Retailer 7
-
£2,601 GBP
$3,491 USD
View
Retailer 8
-
£2,650 GBP
$3,556 USD
View
Price last confirmed 16 days ago
A
Retailer 9
-
£2,659 GBP
$3,568 USD
View
A
Retailer 10
-
£2,666 GBP
View
A
Retailer 11
-
£2,704 GBP
SGD 4,903 SGD
View
A
Retailer 12
-
£2,765 GBP
A$5,708 AUD
View
Retailer 13
-
£2,944 GBP
$3,951 USD
View
Price last confirmed 14 days ago
A
Retailer 14
-
£2,986 GBP
€3,816 EUR
View
B
Retailer 15
-
£4,267 GBP
View
Most Expensive
NZ Jewellers
93e7c22d-43ae-48a0-a06e-d9a31e17ba6f · Oct 18
£4,445 GBP
$5,965 USD
View
Price last confirmed 15 days ago
15 more retailers have this diamond
Prices start from £1,946 GBPSave up to £2,321 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
£1,946 GBP