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Heart|Natural|GIA

1.02ct J SI1 Heart Natural Diamond

VG • J/SI1 • GIA 2557581515

Certificate GIA 2557581515

Diamond specifications and retailer prices

From £851 GBP
As of November 6, 2026
Save £1,161 GBP (58%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,201 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.02ct natural heart diamond

This 1.02ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557581515. Listed at 13 retailers as of November 4, 2026, with a 136% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.02
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557581515
Dimensions6.03 × 6.79 × 4.32 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.03 mm6.79 mm1.02 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557581515
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

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: £1,179 GBP|Low: £832 GBP|High: £2,327 GBP|Avg: £1,376 GBP|-6.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£851 GBP
Retailer 10£1,063 GBP
Retailer 7£1,087 GBP
Retailer 2£1,095 GBP
Retailer 4£1,141 GBP
Retailer 1£1,179 GBP
Retailer 11£1,330 GBP
Retailer 5£1,405 GBP
Retailer 3£1,656 GBP
Retailer 8£1,774 GBP
Retailer 6£2,012 GBP

36 data points across 11 retailers

13 retailers£851 GBP to £2,012 GBP

A
Cheapest Retailer
-
£851 GBP
B+
Retailer 2
-
£1,063 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,087 GBP
View
B+
Retailer 4
-
£1,095 GBP
View
B+
Retailer 5
-
£1,141 GBP
View
B+
Retailer 6
-
£1,179 GBP
View
B+
Retailer 7
-
£1,330 GBP
View
B+
Retailer 8
-
£1,405 GBP
View
B
Retailer 9
-
£1,407 GBP
View
Retailer 10
-
£1,656 GBP
View
Price last confirmed 32 days ago
B
Retailer 11
-
£1,774 GBP
View
B
Retailer 12
-
£2,012 GBP
View
Most Expensive
NZ Jewellers
577dbbf2-e4f9-4d25-b494-48a335be80a6 · Sep 25
£3,201 GBP
$4,284 USD
View
Price last confirmed 42 days ago
12 more retailers have this diamond
Prices start from £851 GBPSave up to £1,161 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
1.02ct Heart
£851 GBP