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Heart|Natural|GIA

1.06ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1383855506

Certificate GIA 1383855506

Diamond specifications and retailer prices

From £1,429 GBP
As of November 6, 2026
Save £811 GBP (36%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,166 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.06ct natural heart diamond

This 1.06ct 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 1383855506. Listed at 15 retailers as of November 6, 2026, with a 57% 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

1.06
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1383855506
Dimensions5.86 × 5.68 × 3.91 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizeNone
Cert comments
Inscription(s): GIA 1383855506
Top View
5.86 mm5.68 mm1.06 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1383855506
Side View
Table 65.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 68.8%

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 6
Current: £3,166 GBP|Low: £1,383 GBP|High: £3,200 GBP|Avg: £1,924 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3£1,429 GBP
Retailer 6£1,477 GBP
Retailer 8£1,509 GBP
Retailer 7£1,517 GBP
Retailer 10£1,577 GBP
Retailer 11£1,635 GBP
Retailer 4£1,910 GBP
Retailer 5£2,202 GBP
Retailer 9£2,222 GBP
Retailer 2£2,241 GBP
MOH London£3,166 GBP

44 data points across 11 retailers

15 retailers£1,429 GBP to £2,241 GBP

B+
Cheapest Retailer
-
£1,429 GBP
B+
Retailer 2
-
£1,476 GBP
View
B+
Retailer 3
-
£1,477 GBP
View
B+
Retailer 4
-
£1,509 GBP
View
Final sale: no returns
Retailer 5
-
£1,517 GBP
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£1,540 GBP
View
B
Retailer 7
-
£1,577 GBP
View
Retailer 8
-
£1,635 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£1,647 GBP
View
B
Retailer 10
-
£1,783 GBP
View
B
Retailer 11
-
£1,910 GBP
View
B
Retailer 12
-
£2,202 GBP
View
Retailer 13
-
£2,222 GBP
View
Price last confirmed 30 days ago
B
Retailer 14
-
£2,241 GBP
View
Most Expensive
MOH London
30E99A5A2 · Oct 26
£3,166 GBP
View
Price last confirmed 11 days ago
14 more retailers have this diamond
Prices start from £1,429 GBPSave up to £811 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+
1.06ct Heart
£1,429 GBP