Heart|Natural|GIA

1.50ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1559797631

Certificate GIA 1559797631

Diamond specifications and retailer prices

From £4,571 GBP
SGD 8,277 SGD
As of October 31, 2026
Save £181 GBP (4%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £8,651 GBP at NZ Jewellers · As of October 21, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559797631. Listed at 20 retailers as of October 30, 2026, with a relatively tight 4% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1559797631
Dimensions7.22 × 7.95 × 4.65 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.22 mm7.95 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1559797631
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 58.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £8,651 GBP|Low: £3,850 GBP|High: £8,651 GBP|Avg: £5,451 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
Retailer 19
Retailer 20
October 22, 2026
Retailer 8£3,850 GBP
Retailer 17£4,137 GBP
Retailer 4£4,326 GBP
Retailer 10£4,426 GBP
Retailer 5£4,571 GBP
Retailer 7£4,774 GBP
Retailer 6£4,775 GBP
Retailer 14£4,849 GBP
Retailer 15£4,985 GBP
Retailer 11£5,068 GBP
Retailer 12£5,105 GBP
Retailer 16£5,173 GBP
Retailer 3£5,253 GBP
Retailer 9£5,293 GBP
Retailer 18£5,610 GBP
Retailer 13£5,968 GBP
Retailer 20£6,279 GBP
Retailer 19£7,661 GBP
Retailer 2£7,734 GBP
NZ Jewellers£8,651 GBP

22 data points across 20 retailers

20 retailers£4,571 GBP to £4,753 GBP

Retailer 1
-
£3,850 GBP
HK$40,300 HKD
Price last confirmed 12 days ago
Retailer 2
-
£4,137 GBP
₹527,957 INR
View
Price last confirmed 14 days ago
Retailer 3
-
£4,326 GBP
$5,796 USD
View
Price last confirmed 17 days ago
Retailer 4
-
£4,426 GBP
SGD 8,014 SGD
View
Price last confirmed 18 days ago
A
Retailer 5
-
£4,571 GBP
SGD 8,277 SGD
View
B+
Retailer 6
-
£4,753 GBP
$6,368 USD
View
Retailer 7
-
£4,754 GBP
$6,370 USD
View
Price last confirmed 10 days ago
Retailer 8
-
£4,775 GBP
$6,398 USD
View
Price last confirmed 16 days ago
Retailer 9
-
£4,849 GBP
View
Price last confirmed 11 days ago
Retailer 10
-
£4,985 GBP
View
Price last confirmed 11 days ago
Retailer 11
-
£5,068 GBP
$6,790 USD
View
Price last confirmed 11 days ago
Retailer 12
-
£5,105 GBP
A$10,524 AUD
View
Price last confirmed 28 days ago
Retailer 13
-
£5,173 GBP
$6,931 USD
View
Price last confirmed 12 days ago
Retailer 14
-
£5,253 GBP
$7,038 USD
View
Price last confirmed 16 days ago
Retailer 15
-
£5,293 GBP
$7,091 USD
View
Price last confirmed 14 days ago
Retailer 16
-
£5,968 GBP
$7,997 USD
View
Price last confirmed 11 days ago
Retailer 17
-
£6,279 GBP
ZAR 135,924 ZAR
View
Price last confirmed 15 days ago
Retailer 18
-
£7,661 GBP
View
Price last confirmed 11 days ago
Retailer 19
-
£7,734 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
8d6608aa-ee51-4159-9e31-7cfd63a51cb0 · Oct 21
£8,651 GBP
$11,592 USD
View
Price last confirmed 11 days ago
19 more retailers have this diamond
Prices start from £4,571 GBPSave up to £181 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
£4,571 GBP