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Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 7556888216

Certificate GIA 7556888216

Diamond specifications and retailer prices

From £725 GBP
HK$7,600 HKD
As of November 1, 2026
Save £1,135 GBP (61%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,799 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 7556888216. Listed at 16 retailers as of November 1, 2026, with a 157% 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556888216
Dimensions5.71 × 6.83 × 4.10 mm
L/W Ratio1.20
Girdle conditionFaceted
Top View
5.71 mm6.83 mm0.91 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7556888216
Side View
Table 56.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.1%

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: £989 GBP|Low: £725 GBP|High: £1,951 GBP|Avg: £1,188 GBP|-4.5%
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£725 GBP
Retailer 9£927 GBP
Retailer 11£937 GBP
Retailer 6£981 GBP
Retailer 1£989 GBP
Retailer 2£1,005 GBP
Retailer 13£1,006 GBP
Retailer 10£1,036 GBP
Retailer 4£1,049 GBP
Retailer 5£1,436 GBP
Retailer 12£1,544 GBP
Retailer 3£1,578 GBP
Retailer 8£1,860 GBP

29 data points across 13 retailers

16 retailers£725 GBP to £1,860 GBP

A
Cheapest Retailer
-
£725 GBP
HK$7,600 HKD
A
Retailer 2
-
£927 GBP
€1,185 EUR
View
B+
Retailer 3
-
£937 GBP
$1,258 USD
View
Final sale: no returns
A
Retailer 4
-
£981 GBP
$1,316 USD
View
A
Retailer 5
-
£989 GBP
View
A
Retailer 6
-
£1,005 GBP
$1,349 USD
View
A
Retailer 7
-
£1,006 GBP
$1,350 USD
View
A
Retailer 8
-
£1,036 GBP
$1,390 USD
View
Retailer 9
-
£1,049 GBP
SGD 1,903 SGD
View
Price last confirmed 11 days ago
B+
Retailer 10
-
£1,370 GBP
A$2,828 AUD
View
Retailer 11
-
£1,384 GBP
View
Price last confirmed 37 days ago
Retailer 12
-
£1,436 GBP
A$2,966 AUD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
£1,544 GBP
ZAR 33,482 ZAR
View
Retailer 14
-
£1,578 GBP
$2,117 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
£1,860 GBP
View
Most Expensive
NZ Jewellers
f460a551-5ddd-4b06-aacf-b983d9ec371e · Sep 25
£2,799 GBP
$3,756 USD
View
Price last confirmed 38 days ago
15 more retailers have this diamond
Prices start from £725 GBPSave up to £1,135 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
£725 GBP