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Heart|Natural|GIA

1.53ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 1543950076

Certificate GIA 1543950076

Diamond specifications and retailer prices

From £1,848 GBP
As of November 6, 2026
Save £2,177 GBP (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,498 GBP at NZ Jewellers · As of September 20, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543950076. Listed at 11 retailers as of November 4, 2026, with a 118% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543950076
Dimensions7.96 × 7.05 × 4.54 mm
L/W Ratio1.13
Girdle conditionThick
Top View
7.96 mm7.05 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543950076
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 57.0%

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: £2,497 GBP|Low: £1,848 GBP|High: £4,198 GBP|Avg: £2,613 GBP|-4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 2£1,848 GBP
Retailer 7£2,142 GBP
Retailer 8£2,222 GBP
Retailer 6£2,338 GBP
Retailer 1£2,497 GBP
Retailer 9£2,520 GBP
Retailer 3£2,810 GBP
Retailer 4£2,945 GBP
Retailer 5£4,025 GBP

34 data points across 9 retailers

11 retailers£1,848 GBP to £4,025 GBP

A
Cheapest Retailer
-
£1,848 GBP
A
Retailer 2
-
£2,142 GBP
View
A
Retailer 3
-
£2,222 GBP
View
A
Retailer 4
-
£2,338 GBP
View
A
Retailer 5
-
£2,497 GBP
View
B+
Retailer 6
-
£2,520 GBP
View
B+
Retailer 7
-
£2,810 GBP
View
B+
Retailer 8
-
£2,945 GBP
View
B
Retailer 9
-
£4,025 GBP
View
Retailer 10
-
£4,322 GBP
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
01749aa1-057d-4017-871f-461a30d1f7d5 · Sep 20
£4,498 GBP
$6,021 USD
View
Price last confirmed 47 days ago
10 more retailers have this diamond
Prices start from £1,848 GBPSave up to £2,177 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
£1,848 GBP