Heart|Natural|GIA

1.50ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 3405997435

Certificate GIA 3405997435

Diamond specifications and retailer prices

From £5,613 GBP
$7,475 USD
As of October 29, 2026
Save £3,815 GBP (40%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £11,254 GBP at NZ Jewellers · As of September 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 E 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 3405997435. Listed at 18 retailers as of October 29, 2026, with a 68% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3405997435
Dimensions7.11 × 7.80 × 4.37 mm
L/W Ratio1.10
Top View
7.11 mm7.80 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3405997435
Side View
Table 63.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 56.0%

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 29
Current: £6,274 GBP|Low: £6,236 GBP|High: £9,491 GBP|Avg: £7,204 GBP|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 1£6,274 GBP
Retailer 2£6,332 GBP
Retailer 5£6,381 GBP
Retailer 7£6,452 GBP
Retailer 4£7,342 GBP
Retailer 6£8,121 GBP
Retailer 3£9,428 GBP

36 data points across 7 retailers

18 retailers£5,613 GBP to £9,428 GBP

B+
Cheapest Retailer
-
£5,613 GBP
$7,475 USD
B+
Retailer 2
-
£5,674 GBP
$7,556 USD
View
B+
Retailer 3
-
£5,995 GBP
$7,983 USD
View
B+
Retailer 4
-
£6,096 GBP
$8,118 USD
View
Price last confirmed 37 days ago
B+
Retailer 5
-
£6,274 GBP
View
B+
Retailer 6
-
£6,332 GBP
View
B+
Retailer 7
-
£6,381 GBP
A$13,073 AUD
View
B+
Retailer 8
-
£6,452 GBP
$8,592 USD
View
B+
Retailer 9
-
£6,698 GBP
$8,920 USD
View
B+
Retailer 10
-
£6,698 GBP
$8,920 USD
View
B
Retailer 11
-
£6,806 GBP
$9,064 USD
View
B
Retailer 12
-
£6,924 GBP
$9,220 USD
View
B
Retailer 13
-
£7,034 GBP
$9,367 USD
View
Price last confirmed 37 days ago
B
Retailer 14
-
£7,342 GBP
€9,312 EUR
View
B
Retailer 15
-
£7,410 GBP
$9,868 USD
View
B
Retailer 16
-
£8,121 GBP
ZAR 174,701 ZAR
View
Price last confirmed 7 days ago
B
Retailer 17
-
£9,428 GBP
View
Most Expensive
B
NZ Jewellers
c666509a-1e21-4e51-8e74-5e21d6c45247 · Sep 21
£11,254 GBP
$14,987 USD
View
Price last confirmed 38 days ago
17 more retailers have this diamond
Prices start from £5,613 GBPSave up to £3,815 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
£5,613 GBP