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Heart|Natural|GIA

1.50ct K SI1 Heart Natural Diamond

VG • K/SI1 • GIA 6481380983

Certificate GIA 6481380983

Diamond specifications and retailer prices

From £1,836 GBP
As of November 6, 2026
Save £2,289 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,658 GBP at NZ Jewellers · As of September 25, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6481380983. Listed at 15 retailers as of November 4, 2026, with a 125% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle37.3°
OriginNatural
Grading LabGIA
CertificateGIA 6481380983
Dimensions7.90 × 7.15 × 4.04 mm
L/W Ratio1.10
Top View
7.90 mm7.15 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6481380983
Side View
Table 59.0%CrownGirdle: THN-THKPavilion 37.3°Culet: NoneDepth 56.5%

Caratlytics Score

How it works →
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: Nov 6
Current: £3,774 GBP|Low: £1,836 GBP|High: £4,299 GBP|Avg: £2,591 GBP|-6.0%
Retailer 1
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
November 6, 2026
Retailer 8£1,836 GBP
Retailer 3£1,928 GBP
Retailer 4£2,032 GBP
Retailer 2£2,068 GBP
Retailer 14£2,069 GBP
Retailer 5£2,183 GBP
Retailer 6£2,185 GBP
Retailer 12£2,428 GBP
Retailer 7£2,439 GBP
Retailer 10£2,456 GBP
Retailer 9£2,763 GBP
Retailer 11£3,019 GBP
Retailer 1£3,774 GBP
Retailer 13£4,125 GBP

35 data points across 14 retailers

15 retailers£1,836 GBP to £4,125 GBP

A
Cheapest Retailer
-
£1,836 GBP
A
Retailer 2
-
£1,928 GBP
View
A
Retailer 3
-
£2,032 GBP
View
A
Retailer 4
-
£2,068 GBP
View
A
Retailer 5
-
£2,069 GBP
View
Final sale: no returns
A
Retailer 6
-
£2,183 GBP
View
A
Retailer 7
-
£2,185 GBP
View
B+
Retailer 8
-
£2,428 GBP
View
A
Retailer 9
-
£2,439 GBP
View
A
Retailer 10
-
£2,456 GBP
View
B+
Retailer 11
-
£2,763 GBP
View
B+
Retailer 12
-
£3,019 GBP
View
B
Retailer 13
-
£3,774 GBP
View
B
Retailer 14
-
£4,125 GBP
View
Most Expensive
NZ Jewellers
3ac3cce9-6fdf-4e9f-9ae1-719d6f6c23ef · Sep 25
£4,658 GBP
$6,235 USD
View
Price last confirmed 42 days ago
14 more retailers have this diamond
Prices start from £1,836 GBPSave up to £2,289 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
£1,836 GBP