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Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 7542688363

Certificate GIA 7542688363

Diamond specifications and retailer prices

From £715 GBP
HK$7,500 HKD
As of November 1, 2026
Save £1,059 GBP (60%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,648 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 7542688363. Listed at 16 retailers as of November 1, 2026, with a 148% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle42.5°
OriginNatural
Grading LabGIA
CertificateGIA 7542688363
Dimensions5.68 × 6.63 × 4.18 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
5.68 mm6.63 mm0.91 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7542688363
Side View
Table 59.0%CrownGirdle: THN-THKPavilion 42.5°Culet: NoneDepth 63.0%

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 1
Current: £973 GBP|Low: £715 GBP|High: £1,868 GBP|Avg: £1,145 GBP|-17.3%
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£715 GBP
Retailer 11£894 GBP
Retailer 9£915 GBP
Retailer 6£966 GBP
Retailer 1£973 GBP
Retailer 2£983 GBP
Retailer 10£991 GBP
Retailer 13£999 GBP
Retailer 4£1,025 GBP
Retailer 5£1,345 GBP
Retailer 12£1,465 GBP
Retailer 3£1,544 GBP
Retailer 8£1,774 GBP

29 data points across 13 retailers

16 retailers£715 GBP to £1,774 GBP

A
Cheapest Retailer
-
£715 GBP
HK$7,500 HKD
A
Retailer 2
-
£894 GBP
$1,200 USD
View
Final sale: no returns
A
Retailer 3
-
£915 GBP
€1,169 EUR
View
A
Retailer 4
-
£966 GBP
$1,296 USD
View
A
Retailer 5
-
£973 GBP
View
A
Retailer 6
-
£983 GBP
$1,319 USD
View
A
Retailer 7
-
£991 GBP
$1,330 USD
View
A
Retailer 8
-
£999 GBP
$1,340 USD
View
Retailer 9
-
£1,025 GBP
SGD 1,859 SGD
View
Price last confirmed 11 days ago
Retailer 10
-
£1,309 GBP
View
Price last confirmed 37 days ago
Retailer 11
-
£1,345 GBP
A$2,778 AUD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
£1,370 GBP
A$2,828 AUD
View
B+
Retailer 13
-
£1,465 GBP
ZAR 31,754 ZAR
View
Retailer 14
-
£1,544 GBP
$2,072 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
£1,774 GBP
View
Most Expensive
NZ Jewellers
81e1e335-e678-4bf7-a348-f7949c2b4e6a · Sep 25
£2,648 GBP
$3,553 USD
View
Price last confirmed 38 days ago
15 more retailers have this diamond
Prices start from £715 GBPSave up to £1,059 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
£715 GBP