Heart|Natural|GIA

1.03ct J SI1 Heart Natural Diamond

ID • J/SI1 • GIA 2547559614

Certificate GIA 2547559614

Diamond specifications and retailer prices

From £794 GBP
As of November 6, 2026
Save £1,124 GBP (59%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,850 GBP at NZ Jewellers · As of September 21, 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 J 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 2547559614. Listed at 13 retailers as of November 4, 2026, with a 141% 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

1.03
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2547559614
Dimensions6.16 × 6.95 × 4.02 mm
L/W Ratio1.13
Top View
6.16 mm6.95 mm1.03 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2547559614
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.8%

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: £794 GBP|Low: £794 GBP|High: £1,951 GBP|Avg: £1,214 GBP|-8.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1£794 GBP
Retailer 9£838 GBP
Retailer 8£973 GBP
Retailer 7£1,005 GBP
Retailer 2£1,123 GBP
Retailer 4£1,151 GBP
Retailer 5£1,160 GBP
Retailer 6£1,281 GBP
Retailer 3£1,455 GBP
Retailer 10£1,918 GBP

31 data points across 10 retailers

13 retailers£794 GBP to £1,918 GBP

A
Cheapest Retailer
-
£794 GBP
A
Retailer 2
-
£838 GBP
View
Final sale: no returns
A
Retailer 3
-
£973 GBP
View
A
Retailer 4
-
£1,005 GBP
View
B+
Retailer 5
-
£1,123 GBP
View
A
Retailer 6
-
£1,151 GBP
View
A
Retailer 7
-
£1,160 GBP
View
B+
Retailer 8
-
£1,281 GBP
View
B+
Retailer 9
-
£1,455 GBP
View
Retailer 10
-
£1,458 GBP
View
Price last confirmed 32 days ago
B
Retailer 11
-
£1,918 GBP
View
Retailer 12
-
£2,685 GBP
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
34629fad-de3e-4ef6-ab21-757641808933 · Sep 21
£2,850 GBP
$3,815 USD
View
Price last confirmed 46 days ago
12 more retailers have this diamond
Prices start from £794 GBPSave up to £1,124 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
1.03ct Heart
£794 GBP