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Heart|Natural|GIA

1.50ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 5556934240

Certificate GIA 5556934240

Diamond specifications and retailer prices

From £2,684 GBP
HK$28,100 HKD
As of November 1, 2026
Save £3,558 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £6,242 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 I 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 5556934240. Listed at 20 retailers as of October 30, 2026, with prices from £2,684 to £6,242, a £3,558 spread on the same certified stone. NZ Jewellers lists it at £6,242. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556934240
Dimensions7.17 × 7.69 × 4.70 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Cavity
Top View
7.17 mm7.69 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556934240
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.1%

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: £6,242 GBP|Low: £2,656 GBP|High: £6,242 GBP|Avg: £3,802 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 15£2,684 GBP
Retailer 11£2,872 GBP
Retailer 5£3,161 GBP
Retailer 6£3,306 GBP
Retailer 12£3,400 GBP
Retailer 8£3,414 GBP
Retailer 2£3,539 GBP
Retailer 4£3,583 GBP
Retailer 17£3,583 GBP
Retailer 18£3,583 GBP
Retailer 10£3,635 GBP
Retailer 9£3,650 GBP
Retailer 7£3,696 GBP
Retailer 16£4,055 GBP
Retailer 3£4,134 GBP
Retailer 14£4,404 GBP
Retailer 13£5,707 GBP
NZ Jewellers£6,242 GBP

25 data points across 18 retailers

20 retailers£2,684 GBP to £6,242 GBP

A
Cheapest Retailer
-
£2,684 GBP
HK$28,100 HKD
A
Retailer 2
-
£2,872 GBP
₹366,456 INR
View
A
Retailer 3
-
£3,161 GBP
SGD 5,723 SGD
View
B+
Retailer 4
-
£3,286 GBP
$4,403 USD
View
B+
Retailer 5
-
£3,288 GBP
$4,405 USD
View
B+
Retailer 6
-
£3,306 GBP
$4,430 USD
View
Final sale: no returns
B+
Retailer 7
-
£3,400 GBP
View
B+
Retailer 8
-
£3,414 GBP
SGD 6,181 SGD
View
B+
Retailer 9
-
£3,539 GBP
View
B+
Retailer 10
-
£3,583 GBP
$4,801 USD
View
B+
Retailer 11
-
£3,583 GBP
$4,801 USD
View
B+
Retailer 12
-
£3,583 GBP
$4,801 USD
View
Retailer 13
-
£3,635 GBP
A$7,493 AUD
View
Price last confirmed 23 days ago
B+
Retailer 14
-
£3,650 GBP
$4,890 USD
View
B+
Retailer 15
-
£3,696 GBP
$4,952 USD
View
B+
Retailer 16
-
£4,055 GBP
€5,174 EUR
View
B+
Retailer 17
-
£4,134 GBP
$5,539 USD
View
B
Retailer 18
-
£4,404 GBP
ZAR 95,334 ZAR
View
B
Retailer 19
-
£5,707 GBP
View
Most Expensive
B
NZ Jewellers
bb6badf4-3045-4ab7-ba0e-cdeb5d73db84 · Oct 30
£6,242 GBP
$8,364 USD
View
19 more retailers have this diamond
Prices start from £2,684 GBPSave up to £3,558 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
£2,684 GBP