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Heart|Natural|GIA

1.02ct J I1 Heart Natural Diamond

J/I1 • GIA 6431229799

Certificate GIA 6431229799

Diamond specifications and retailer prices

From £1,165 GBP
HK$12,200 HKD
As of October 31, 2026
Save £1,012 GBP (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,333 GBP at NZ Jewellers · As of October 30, 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 I1 clarity (included) and certified by GIA 6431229799. Listed at 8 retailers as of October 31, 2026, with a 87% 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
I1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6431229799
Dimensions6.27 × 6.60 × 3.86 mm
L/W Ratio1.05
Top View
6.27 mm6.60 mm1.02 ctJ / I1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6431229799
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.5%

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: Oct 31
Current: £1,166 GBP|Low: £1,156 GBP|High: £2,178 GBP|Avg: £1,579 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 2£1,165 GBP
Retailer 1£1,166 GBP
Retailer 4£1,523 GBP
Retailer 5£1,594 GBP
Retailer 6£1,897 GBP
Retailer 3£2,178 GBP

43 data points across 6 retailers

8 retailers£1,165 GBP to £2,178 GBP

B+
Cheapest Retailer
-
£1,165 GBP
HK$12,200 HKD
B+
Retailer 2
-
£1,166 GBP
₹148,742 INR
View
B
Retailer 3
-
£1,523 GBP
$2,041 USD
View
C
Retailer 4
-
£1,594 GBP
$2,136 USD
View
C
Retailer 5
-
£1,594 GBP
$2,136 USD
View
C
Retailer 6
-
£1,840 GBP
$2,465 USD
View
C
Retailer 7
-
£2,178 GBP
€2,779 EUR
View
Most Expensive
NZ Jewellers
ef574da2-d79b-4d5b-8bf4-f24656aec440 · Oct 30
£3,333 GBP
$4,466 USD
View
Price under review
7 more retailers have this diamond
Prices start from £1,165 GBPSave up to £1,012 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+
1.02ct Heart
£1,165 GBP