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Heart|Natural|GIA

1.50ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5553306007

Certificate GIA 5553306007

Diamond specifications and retailer prices

From £2,935 GBP
As of November 6, 2026
Save £3,287 GBP (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £6,765 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded H 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 5553306007. Listed at 22 retailers as of November 4, 2026, with a 112% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553306007
Dimensions7.41 × 8.05 × 4.41 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.41 mm8.05 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553306007
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 54.8%

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 6
Current: £6,765 GBP|Low: £2,926 GBP|High: £6,789 GBP|Avg: £4,193 GBP|+2.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 13£2,935 GBP
Retailer 2£3,112 GBP
Retailer 10£3,410 GBP
Retailer 9£3,499 GBP
Retailer 4£3,616 GBP
Retailer 5£3,758 GBP
Retailer 7£3,848 GBP
Retailer 12£3,937 GBP
Retailer 3£4,031 GBP
Retailer 6£4,407 GBP
Retailer 8£4,779 GBP
Retailer 11£6,222 GBP
Queensmith£6,765 GBP

28 data points across 13 retailers

22 retailers£2,935 GBP to £6,222 GBP

A
Cheapest Retailer
-
£2,935 GBP
A
Retailer 2
-
£3,112 GBP
View
B+
Retailer 3
-
£3,410 GBP
View
B+
Retailer 4
-
£3,499 GBP
View
B+
Retailer 5
-
£3,616 GBP
View
Final sale: no returns
B+
Retailer 6
-
£3,619 GBP
View
B+
Retailer 7
-
£3,620 GBP
View
Retailer 8
-
£3,758 GBP
View
Price last confirmed 12 days ago
B+
Retailer 9
-
£3,806 GBP
View
B+
Retailer 10
-
£3,848 GBP
View
B+
Retailer 11
-
£3,937 GBP
View
Retailer 12
-
£3,942 GBP
View
Price last confirmed 22 days ago
Retailer 13
-
£3,942 GBP
View
Price last confirmed 20 days ago
Retailer 14
-
£3,942 GBP
View
Price last confirmed 22 days ago
Retailer 15
-
£4,001 GBP
View
Price last confirmed 29 days ago
B+
Retailer 16
-
£4,031 GBP
View
B+
Retailer 17
-
£4,407 GBP
View
Retailer 18
-
£4,549 GBP
View
Price last confirmed 19 days ago
B+
Retailer 19
-
£4,779 GBP
View
B
Retailer 20
-
£6,222 GBP
View
Retailer 21
-
£6,594 GBP
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
5553306007 · Oct 28
£6,765 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from £2,935 GBPSave up to £3,287 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
£2,935 GBP