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Heart|Natural|GIA

1.50ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 2536685316

Certificate GIA 2536685316

Diamond specifications and retailer prices

From £3,089 GBP
As of November 6, 2026
Save £3,323 GBP (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £6,860 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 2536685316. Listed at 21 retailers as of November 4, 2026, with a 108% 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2536685316
Dimensions7.11 × 8.02 × 4.63 mm
L/W Ratio1.13
Top View
7.11 mm8.02 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2536685316
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.7%

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: £6,860 GBP|Low: £3,089 GBP|High: £6,889 GBP|Avg: £4,526 GBP|+2.0%
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 16£3,089 GBP
Retailer 2£3,269 GBP
Retailer 13£3,584 GBP
Retailer 12£3,680 GBP
Retailer 4£3,726 GBP
Retailer 9£3,783 GBP
Retailer 10£3,877 GBP
Retailer 5£4,061 GBP
Retailer 6£4,061 GBP
Retailer 3£4,151 GBP
Retailer 15£4,247 GBP
Retailer 8£4,686 GBP
Retailer 11£4,925 GBP
Retailer 14£6,412 GBP
Retailer 7£6,792 GBP
Queensmith£6,860 GBP

26 data points across 16 retailers

21 retailers£3,089 GBP to £6,412 GBP

A
Cheapest Retailer
-
£3,089 GBP
A
Retailer 2
-
£3,269 GBP
View
B+
Retailer 3
-
£3,584 GBP
View
B+
Retailer 4
-
£3,680 GBP
View
B+
Retailer 5
-
£3,726 GBP
View
Final sale: no returns
B+
Retailer 6
-
£3,783 GBP
View
B+
Retailer 7
-
£3,806 GBP
View
B+
Retailer 8
-
£3,807 GBP
View
B+
Retailer 9
-
£3,877 GBP
View
B+
Retailer 10
-
£3,990 GBP
View
Retailer 11
-
£4,061 GBP
View
Price last confirmed 22 days ago
Retailer 12
-
£4,061 GBP
View
Price last confirmed 20 days ago
Retailer 13
-
£4,061 GBP
View
Price last confirmed 22 days ago
Retailer 14
-
£4,135 GBP
View
Price last confirmed 29 days ago
B+
Retailer 15
-
£4,151 GBP
View
B+
Retailer 16
-
£4,247 GBP
View
Retailer 17
-
£4,686 GBP
View
Price last confirmed 19 days ago
B+
Retailer 18
-
£4,925 GBP
View
B
Retailer 19
-
£6,412 GBP
View
Retailer 20
-
£6,792 GBP
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
2536685316 · Oct 28
£6,860 GBP
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from £3,089 GBPSave up to £3,323 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
£3,089 GBP