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Heart|Natural|GIA

1.53ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 2537555541

Certificate GIA 2537555541

Diamond specifications and retailer prices

From £3,190 GBP
As of November 6, 2026
Save £3,115 GBP (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,306 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.53ct natural heart diamond

This 1.53ct 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 2537555541. Listed at 15 retailers as of November 5, 2026, with prices from £3,190 to £6,306, a £3,115 spread on the same certified stone. NZ Jewellers lists it at £6,306. 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

1.53
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.58°
Pavilion angle39.08°
OriginNatural
Grading LabGIA
CertificateGIA 2537555541
Dimensions7.09 × 8.12 × 4.49 mm
L/W Ratio1.15
Top View
7.09 mm8.12 mm1.53 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537555541
Side View
Table 55.0%Crown 35.58°Girdle: STK-VTKPavilion 39.08°Culet: NoneDepth 55.3%

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: £3,712 GBP|Low: £3,190 GBP|High: £6,077 GBP|Avg: £3,913 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 9£3,190 GBP
Retailer 6£3,289 GBP
Retailer 7£3,479 GBP
Retailer 3£3,533 GBP
Retailer 10£3,545 GBP
Retailer 1£3,712 GBP
Retailer 2£3,770 GBP
Retailer 8£3,801 GBP
Retailer 4£4,600 GBP
Retailer 5£5,989 GBP

41 data points across 10 retailers

15 retailers£3,190 GBP to £6,306 GBP

A
Cheapest Retailer
-
£3,190 GBP
A
Retailer 2
-
£3,289 GBP
View
B+
Retailer 3
-
£3,479 GBP
View
Final sale: no returns
A
Retailer 4
-
£3,533 GBP
View
B+
Retailer 5
-
£3,545 GBP
View
B+
Retailer 6
-
£3,712 GBP
View
Retailer 7
-
£3,770 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£3,770 GBP
View
B+
Retailer 9
-
£3,770 GBP
View
Retailer 10
-
£3,801 GBP
View
Price last confirmed 29 days ago
B+
Retailer 11
-
£3,959 GBP
View
B+
Retailer 12
-
£4,350 GBP
View
B+
Retailer 13
-
£4,600 GBP
View
B
Retailer 14
-
£5,989 GBP
View
Most Expensive
B
NZ Jewellers
54f1792d-dd47-4831-9e9d-15aaa947d6c0 · Nov 5
£6,306 GBP
$8,440 USD
View
14 more retailers have this diamond
Prices start from £3,190 GBPSave up to £3,115 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
1.53ct Heart
£3,190 GBP