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Heart|Natural|GIA

1.06ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2558523931

Certificate GIA 2558523931

Diamond specifications and retailer prices

From £1,099 GBP
As of November 6, 2026
Save £226 GBP (17%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,325 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

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 2558523931. Listed at 6 retailers as of November 5, 2026, with prices from £1,099 to £1,325, a £226 spread on the same certified stone. Blue Nile lists it at £1,325. 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 2558523931
Dimensions6.13 × 7.21 × 4.25 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Twinning Wisp, Indented Natural
Top View
6.13 mm7.21 mm1.06 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558523931
Side View
Table 53.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.0%

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: £1,325 GBP|Low: £1,027 GBP|High: £1,518 GBP|Avg: £1,227 GBP|-12.7%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4£1,099 GBP
Retailer 3£1,105 GBP
Retailer 5£1,115 GBP
Retailer 2£1,201 GBP
Retailer 6£1,246 GBP
Blue Nile£1,325 GBP

41 data points across 6 retailers

6 retailers£1,099 GBP to £1,325 GBP

A
Cheapest Retailer
-
£1,099 GBP
Final sale: no returns
A
Retailer 2
-
£1,105 GBP
View
A
Retailer 3
-
£1,115 GBP
View
A
Retailer 4
-
£1,201 GBP
View
B+
Retailer 5
-
£1,246 GBP
View
Most Expensive
B+
Blue Nile
29431329 · Nov 5
£1,325 GBP
$1,774 USD
View
5 more retailers have this diamond
Prices start from £1,099 GBPSave up to £226 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
1.06ct Heart
£1,099 GBP