CaratHunter
Plans
Heart|Natural|GIA

0.91ct E SI2 Heart Natural Diamond

ID • E/SI2 • GIA 1557583007

Certificate GIA 1557583007

Diamond specifications and retailer prices

From £759 GBP
HK$7,900 HKD
As of October 29, 2026
Save £746 GBP (50%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,654 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557583007. Listed at 10 retailers as of October 23, 2026, with a 98% 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

0.91
Carat
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1557583007
Dimensions5.71 × 6.78 × 3.91 mm
L/W Ratio1.19
Girdle conditionFaceted
Top View
5.71 mm6.78 mm0.91 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1557583007
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.6%

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: Oct 29
Current: £990 GBP|Low: £740 GBP|High: £1,960 GBP|Avg: £1,239 GBP|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 4£759 GBP
Retailer 8£957 GBP
Retailer 3£973 GBP
Retailer 1£990 GBP
Retailer 6£999 GBP
Retailer 7£1,062 GBP
Retailer 10£1,307 GBP
Retailer 5£1,505 GBP
Retailer 2£1,741 GBP
Retailer 9£1,917 GBP

34 data points across 10 retailers

10 retailers£759 GBP to £1,505 GBP

A
Cheapest Retailer
-
£759 GBP
HK$7,900 HKD
A
Retailer 2
-
£957 GBP
$1,274 USD
View
Final sale: no returns
A
Retailer 3
-
£973 GBP
$1,296 USD
View
A
Retailer 4
-
£990 GBP
View
A
Retailer 5
-
£999 GBP
$1,330 USD
View
A
Retailer 6
-
£1,062 GBP
SGD 1,912 SGD
View
B+
Retailer 7
-
£1,307 GBP
A$2,678 AUD
View
B+
Retailer 8
-
£1,505 GBP
$2,004 USD
View
Retailer 9
-
£1,917 GBP
View
Price last confirmed 21 days ago
Most Expensive
NZ Jewellers
e9e6953d-88ee-467d-ba45-9bed2ac7fc3d · Sep 25
£2,654 GBP
$3,534 USD
View
Price last confirmed 34 days ago
9 more retailers have this diamond
Prices start from £759 GBPSave up to £746 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
0.91ct Heart
£759 GBP