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Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 2243005893

Certificate GIA 2243005893

Diamond specifications and retailer prices

From £668 GBP
HK$7,000 HKD
As of November 1, 2026
Save £1,036 GBP (61%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,610 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2243005893. Listed at 16 retailers as of November 1, 2026, with a 155% 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2243005893
Dimensions5.78 × 6.67 × 3.91 mm
L/W Ratio1.15
Girdle conditionFaceted
Top View
5.78 mm6.67 mm0.91 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2243005893
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.6%

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: Nov 1
Current: £911 GBP|Low: £668 GBP|High: £1,882 GBP|Avg: £1,098 GBP|-9.4%
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
November 3, 2026
Retailer 7£668 GBP
Retailer 11£858 GBP
Retailer 9£859 GBP
Retailer 6£901 GBP
Retailer 1£911 GBP
Retailer 10£924 GBP
Retailer 2£927 GBP
Retailer 13£939 GBP
Retailer 4£962 GBP
Retailer 5£1,325 GBP
Retailer 12£1,419 GBP
Retailer 3£1,455 GBP
Retailer 8£1,704 GBP

30 data points across 13 retailers

16 retailers£668 GBP to £1,704 GBP

A
Cheapest Retailer
-
£668 GBP
HK$7,000 HKD
A
Retailer 2
-
£858 GBP
$1,152 USD
View
Final sale: no returns
A
Retailer 3
-
£859 GBP
€1,097 EUR
View
A
Retailer 4
-
£901 GBP
$1,209 USD
View
A
Retailer 5
-
£911 GBP
View
A
Retailer 6
-
£924 GBP
$1,240 USD
View
A
Retailer 7
-
£927 GBP
$1,244 USD
View
A
Retailer 8
-
£939 GBP
$1,260 USD
View
Retailer 9
-
£962 GBP
SGD 1,744 SGD
View
Price last confirmed 10 days ago
Retailer 10
-
£1,290 GBP
View
Price last confirmed 37 days ago
B+
Retailer 11
-
£1,302 GBP
A$2,688 AUD
View
Retailer 12
-
£1,325 GBP
A$2,735 AUD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
£1,419 GBP
ZAR 30,768 ZAR
View
Retailer 14
-
£1,455 GBP
$1,952 USD
View
Price last confirmed 10 days ago
B+
Retailer 15
-
£1,704 GBP
View
Most Expensive
NZ Jewellers
2106c76d-21b4-40c3-a642-29d064b5ae9f · Sep 25
£2,610 GBP
$3,502 USD
View
Price last confirmed 38 days ago
15 more retailers have this diamond
Prices start from £668 GBPSave up to £1,036 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
£668 GBP