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Heart|Natural|GIA

1.03ct L SI1 Heart Natural Diamond

EX • L/SI1 • GIA 1539594262

Certificate GIA 1539594262

Diamond specifications and retailer prices

From £1,015 GBP
As of November 5, 2026
Save £1,536 GBP (60%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,551 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.03ct natural heart diamond

This 1.03ct natural heart sits in the classic one-carat band, graded L 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 1539594262. Listed at 7 retailers as of November 3, 2026, with prices from £1,015 to £2,551, a £1,536 spread on the same certified stone. NZ Jewellers lists it at £2,551. 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

1.03
Carat
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.92°
Pavilion angle41.62°
OriginNatural
Grading LabGIA
CertificateGIA 1539594262
Dimensions6.19 × 7.00 × 4.23 mm
L/W Ratio1.13
Girdle conditionThick
Key to symbols
Crystal, Pinpoint, Indented Natural, Natural
Top View
6.19 mm7.00 mm1.03 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539594262
Side View
Table 59.0%Crown 36.92°GirdlePavilion 41.62°CuletDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,551 GBP|Low: £976 GBP|High: £2,603 GBP|Avg: £1,305 GBP|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2£1,015 GBP
Retailer 3£1,020 GBP
Retailer 6£1,046 GBP
Retailer 7£1,046 GBP
Retailer 4£1,095 GBP
Retailer 5£1,124 GBP
Retailer 8£1,297 GBP
NZ Jewellers£2,551 GBP

40 data points across 8 retailers

7 retailers£1,015 GBP to £2,551 GBP

B+
Cheapest Retailer
-
£1,015 GBP
B+
Retailer 2
-
£1,020 GBP
View
B+
Retailer 3
-
£1,046 GBP
View
B+
Retailer 4
-
£1,046 GBP
View
B
Retailer 5
-
£1,095 GBP
View
B
Retailer 6
-
£1,124 GBP
View
Most Expensive
C
NZ Jewellers
85a7c955-8d95-4e8e-8865-359e18087832 · Nov 3
£2,551 GBP
$3,415 USD
View
6 more retailers have this diamond
Prices start from £1,015 GBPSave up to £1,536 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.

B+
1.03ct Heart
£1,015 GBP