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Heart|Natural|GIA

1.50ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 6431697483

Certificate GIA 6431697483

Diamond specifications and retailer prices

From £2,593 GBP
$3,474 USD
As of November 1, 2026
Save £3,073 GBP (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,666 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6431697483. Listed at 20 retailers as of October 30, 2026, with prices from £2,593 to £5,666, a £3,073 spread on the same certified stone. NZ Jewellers lists it at £5,666. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle38.3°
Pavilion angle42.5°
OriginNatural
Grading LabGIA
CertificateGIA 6431697483
Dimensions7.76 × 6.52 × 3.98 mm
L/W Ratio1.19
Top View
7.76 mm6.52 mm1.50 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6431697483
Side View
Table 54.0%Crown 38.3°Girdle: MED-ETKPavilion 42.5°Culet: 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: £5,666 GBP|Low: £2,493 GBP|High: £5,666 GBP|Avg: £3,423 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
November 2, 2026
Retailer 8£2,593 GBP
Retailer 5£2,719 GBP
Retailer 20£2,814 GBP
Retailer 10£2,940 GBP
Retailer 17£2,947 GBP
Retailer 18£2,947 GBP
Retailer 19£2,947 GBP
Retailer 4£3,032 GBP
Retailer 13£3,065 GBP
Retailer 7£3,114 GBP
Retailer 3£3,299 GBP
Retailer 9£3,299 GBP
Retailer 2£3,327 GBP
Retailer 16£3,400 GBP
Retailer 12£3,411 GBP
Retailer 6£3,469 GBP
Retailer 11£3,679 GBP
Retailer 15£3,998 GBP
Retailer 14£5,180 GBP
NZ Jewellers£5,666 GBP

36 data points across 20 retailers

20 retailers£2,593 GBP to £5,666 GBP

A
Cheapest Retailer
-
£2,593 GBP
$3,474 USD
B+
Retailer 2
-
£2,719 GBP
$3,643 USD
View
Final sale: no returns
A
Retailer 3
-
£2,814 GBP
$3,770 USD
View
B+
Retailer 4
-
£2,940 GBP
$3,939 USD
View
B+
Retailer 5
-
£2,947 GBP
$3,948 USD
View
B+
Retailer 6
-
£2,947 GBP
$3,948 USD
View
B+
Retailer 7
-
£2,947 GBP
$3,948 USD
View
B+
Retailer 8
-
£3,032 GBP
$4,062 USD
View
A
Retailer 9
-
£3,065 GBP
View
B+
Retailer 10
-
£3,114 GBP
$4,173 USD
View
B+
Retailer 11
-
£3,299 GBP
$4,420 USD
View
B+
Retailer 12
-
£3,299 GBP
$4,420 USD
View
B+
Retailer 13
-
£3,327 GBP
View
B+
Retailer 14
-
£3,400 GBP
$4,555 USD
View
B+
Retailer 15
-
£3,411 GBP
$4,570 USD
View
Retailer 16
-
£3,469 GBP
A$7,151 AUD
View
Price last confirmed 23 days ago
Retailer 17
-
£3,679 GBP
$4,929 USD
View
Price last confirmed 10 days ago
B+
Retailer 18
-
£3,998 GBP
ZAR 86,532 ZAR
View
B
Retailer 19
-
£5,180 GBP
View
Most Expensive
B
NZ Jewellers
7fe1b50c-cc24-4e3b-8177-a8777045fc8d · Oct 30
£5,666 GBP
$7,592 USD
View
19 more retailers have this diamond
Prices start from £2,593 GBPSave up to £3,073 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
£2,593 GBP