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Heart|Natural|GIA

0.91ct I SI2 Heart Natural Diamond

ID • I/SI2 • GIA 2556551345

Certificate GIA 2556551345

Diamond specifications and retailer prices

From £713 GBP
$956 USD
As of November 1, 2026
Save £1,557 GBP (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,271 GBP at Moon Ocean · As of November 1, 2026
View at Moon Ocean

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556551345. Listed at 15 retailers as of November 1, 2026, with prices from £713 to £2,271, a £1,557 spread on the same certified stone. Moon Ocean lists it at £2,271. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556551345
Dimensions6.63 × 5.61 × 3.97 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
6.63 mm5.61 mm0.91 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556551345
Side View
Table 61.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 60.0%

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: £2,271 GBP|Low: £643 GBP|High: £2,284 GBP|Avg: £1,115 GBP|-0.4%
Moon Ocean
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
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 10£713 GBP
Retailer 7£731 GBP
Retailer 6£732 GBP
Retailer 14£795 GBP
Retailer 16£795 GBP
Retailer 15£825 GBP
Retailer 8£885 GBP
Retailer 17£897 GBP
Retailer 12£917 GBP
Retailer 3£963 GBP
Retailer 4£963 GBP
Retailer 5£993 GBP
Retailer 9£1,170 GBP
Retailer 11£1,228 GBP
Retailer 2£1,608 GBP
Retailer 13£2,140 GBP
Moon Ocean£2,271 GBP

29 data points across 17 retailers

15 retailers£713 GBP to £2,271 GBP

A
Cheapest Retailer
-
£713 GBP
$956 USD
A
Retailer 2
-
£731 GBP
$980 USD
View
A
Retailer 3
-
£732 GBP
$981 USD
View
A
Retailer 4
-
£795 GBP
$1,065 USD
View
A
Retailer 5
-
£795 GBP
$1,065 USD
View
A
Retailer 6
-
£825 GBP
$1,106 USD
View
A
Retailer 7
-
£897 GBP
$1,202 USD
View
B+
Retailer 8
-
£917 GBP
$1,229 USD
View
B+
Retailer 9
-
£963 GBP
$1,290 USD
View
B+
Retailer 10
-
£963 GBP
$1,290 USD
View
B+
Retailer 11
-
£993 GBP
$1,330 USD
View
B+
Retailer 12
-
£1,228 GBP
€1,567 EUR
View
B
Retailer 13
-
£1,608 GBP
View
B
Retailer 14
-
£2,140 GBP
$2,868 USD
View
Most Expensive
B
Moon Ocean
NVN-D9DE9C83B-345 · Nov 1
£2,271 GBP
View
14 more retailers have this diamond
Prices start from £713 GBPSave up to £1,557 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
£713 GBP