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Heart|Natural|GIA

1.50ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 7553417556

Certificate GIA 7553417556

Diamond specifications and retailer prices

From £2,560 GBP
HK$26,800 HKD
As of November 1, 2026
Save £2,923 GBP (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £6,319 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 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 7553417556. Listed at 17 retailers as of November 1, 2026, with a 114% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7553417556
Dimensions6.79 × 7.69 × 4.75 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.79 mm7.69 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7553417556
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.2%

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: £2,919 GBP|Low: £2,560 GBP|High: £5,920 GBP|Avg: £3,538 GBP|-5.2%
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
Retailer 15
November 2, 2026
Retailer 12£2,560 GBP
Retailer 11£2,608 GBP
Retailer 9£2,738 GBP
Retailer 1£2,919 GBP
Retailer 15£2,926 GBP
Retailer 4£2,933 GBP
Retailer 6£3,023 GBP
Retailer 10£3,120 GBP
Retailer 13£3,267 GBP
Retailer 8£3,276 GBP
Retailer 3£3,370 GBP
Retailer 7£3,712 GBP
Retailer 2£4,320 GBP
Retailer 5£5,448 GBP
Retailer 14£5,483 GBP

23 data points across 15 retailers

17 retailers£2,560 GBP to £5,483 GBP

A
Cheapest Retailer
-
£2,560 GBP
HK$26,800 HKD
A
Retailer 2
-
£2,608 GBP
$3,495 USD
View
A
Retailer 3
-
£2,738 GBP
$3,668 USD
View
A
Retailer 4
-
£2,919 GBP
$3,911 USD
View
Final sale: no returns
A
Retailer 5
-
£2,926 GBP
€3,734 EUR
View
A
Retailer 6
-
£2,933 GBP
$3,929 USD
View
A
Retailer 7
-
£3,023 GBP
$4,050 USD
View
A
Retailer 8
-
£3,120 GBP
$4,180 USD
View
A
Retailer 9
-
£3,267 GBP
View
A
Retailer 10
-
£3,276 GBP
View
B+
Retailer 11
-
£3,370 GBP
$4,516 USD
View
Retailer 12
-
£3,712 GBP
A$7,652 AUD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
£3,788 GBP
A$7,808 AUD
View
B+
Retailer 14
-
£4,320 GBP
ZAR 93,519 ZAR
View
Retailer 15
-
£5,448 GBP
$7,300 USD
View
Price last confirmed 9 days ago
B
Retailer 16
-
£5,483 GBP
View
Most Expensive
NZ Jewellers
c057e1e3-6303-4715-9e07-cd1e1d0fee64 · Sep 25
£6,319 GBP
$8,467 USD
View
Price last confirmed 37 days ago
16 more retailers have this diamond
Prices start from £2,560 GBPSave up to £2,923 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
£2,560 GBP