Heart|Natural|GIA

1.01ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1549355495

Certificate GIA 1549355495

Diamond specifications and retailer prices

From £879 GBP
As of November 6, 2026
Save £1,192 GBP (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,129 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.01ct natural heart diamond

This 1.01ct 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 1549355495. Listed at 15 retailers as of November 2, 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. 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

1.01
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.3°
OriginNatural
Grading LabGIA
CertificateGIA 1549355495
Dimensions6.11 × 6.91 × 4.07 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.11 mm6.91 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549355495
Side View
Table 57.0%CrownGirdle: MED-VTKPavilion 40.3°Culet: NoneDepth 58.9%

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: £1,769 GBP|Low: £879 GBP|High: £2,200 GBP|Avg: £1,326 GBP|-9.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 9£879 GBP
Retailer 4£989 GBP
Retailer 2£1,024 GBP
Retailer 5£1,038 GBP
Retailer 7£1,046 GBP
Retailer 11£1,047 GBP
Retailer 14£1,077 GBP
Retailer 8£1,223 GBP
Retailer 10£1,232 GBP
Retailer 12£1,367 GBP
Retailer 13£1,443 GBP
Retailer 6£1,619 GBP
Retailer 1£1,769 GBP
Retailer 3£2,072 GBP

31 data points across 14 retailers

15 retailers£879 GBP to £2,072 GBP

A
Cheapest Retailer
-
£879 GBP
A
Retailer 2
-
£989 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,024 GBP
View
A
Retailer 4
-
£1,038 GBP
View
A
Retailer 5
-
£1,046 GBP
View
A
Retailer 6
-
£1,047 GBP
View
A
Retailer 7
-
£1,077 GBP
View
B+
Retailer 8
-
£1,223 GBP
View
B+
Retailer 9
-
£1,232 GBP
View
B+
Retailer 10
-
£1,367 GBP
View
B+
Retailer 11
-
£1,443 GBP
View
Retailer 12
-
£1,619 GBP
View
Price last confirmed 32 days ago
B+
Retailer 13
-
£1,769 GBP
View
B
Retailer 14
-
£2,072 GBP
View
Most Expensive
NZ Jewellers
f1a80c97-eb2c-47eb-ba23-58a4514ec750 · Sep 25
£3,129 GBP
$4,188 USD
View
Price last confirmed 42 days ago
14 more retailers have this diamond
Prices start from £879 GBPSave up to £1,192 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
1.01ct Heart
£879 GBP