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Heart|Natural|GIA

1.50ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 1417574633

Certificate GIA 1417574633

Diamond specifications and retailer prices

From £3,423 GBP
$4,586 USD
As of October 31, 2026
Save £4,853 GBP (59%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £8,276 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 1417574633. Listed at 23 retailers as of October 30, 2026, with prices from £3,423 to £8,276, a £4,853 spread on the same certified stone. NZ Jewellers lists it at £8,276. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1417574633
Dimensions6.83 × 8.03 × 4.69 mm
L/W Ratio1.18
Culet sizeNone
Top View
6.83 mm8.03 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1417574633
Side View
Table 62.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 58.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £8,276 GBP|Low: £3,423 GBP|High: £8,276 GBP|Avg: £4,955 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 1, 2026
Retailer 5£3,423 GBP
Retailer 13£3,776 GBP
Retailer 9£3,818 GBP
Retailer 4£3,934 GBP
Retailer 10£4,173 GBP
Retailer 16£4,179 GBP
Retailer 12£4,421 GBP
Retailer 3£4,482 GBP
Retailer 7£4,482 GBP
Retailer 17£4,482 GBP
Retailer 19£4,744 GBP
Retailer 18£4,752 GBP
Retailer 15£4,853 GBP
Retailer 20£5,173 GBP
Retailer 6£5,438 GBP
Retailer 11£5,455 GBP
Retailer 14£6,080 GBP
Retailer 8£6,086 GBP
Retailer 2£7,290 GBP
NZ Jewellers£8,276 GBP

33 data points across 20 retailers

23 retailers£3,423 GBP to £8,276 GBP

B+
Cheapest Retailer
-
£3,423 GBP
$4,586 USD
B+
Retailer 2
-
£3,776 GBP
View
B+
Retailer 3
-
£3,818 GBP
$5,116 USD
View
B+
Retailer 4
-
£3,909 GBP
$5,238 USD
View
B+
Retailer 5
-
£3,934 GBP
$5,271 USD
View
B+
Retailer 6
-
£4,067 GBP
$5,450 USD
View
B+
Retailer 7
-
£4,067 GBP
$5,450 USD
View
B+
Retailer 8
-
£4,173 GBP
$5,591 USD
View
B+
Retailer 9
-
£4,179 GBP
$5,600 USD
View
B+
Retailer 10
-
£4,202 GBP
$5,630 USD
View
B
Retailer 11
-
£4,421 GBP
$5,924 USD
View
B+
Retailer 12
-
£4,482 GBP
$6,006 USD
View
B+
Retailer 13
-
£4,482 GBP
$6,006 USD
View
B+
Retailer 14
-
£4,482 GBP
$6,006 USD
View
B+
Retailer 15
-
£4,744 GBP
$6,357 USD
View
Retailer 16
-
£4,752 GBP
View
Price last confirmed 32 days ago
Retailer 17
-
£4,853 GBP
A$10,003 AUD
View
Price last confirmed 28 days ago
Retailer 18
-
£5,173 GBP
$6,931 USD
View
Price last confirmed 56 days ago
B
Retailer 19
-
£5,173 GBP
$6,931 USD
View
Retailer 20
-
£5,455 GBP
$7,309 USD
View
Price last confirmed 9 days ago
B
Retailer 21
-
£6,080 GBP
ZAR 131,598 ZAR
View
B
Retailer 22
-
£7,290 GBP
View
Most Expensive
B
NZ Jewellers
4950776f-620c-4179-857b-303f4b41a2c8 · Oct 30
£8,276 GBP
$11,089 USD
View
22 more retailers have this diamond
Prices start from £3,423 GBPSave up to £4,853 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.

B+
1.50ct Heart
£3,423 GBP