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Heart|Natural|GIA

0.91ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 5556326450

Certificate GIA 5556326450

Diamond specifications and retailer prices

From €740 EUR
$830 USD
As of November 1, 2026
Save €1,633 EUR (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €2,373 EUR at Moon Ocean · As of November 2, 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 5556326450. Listed at 15 retailers as of November 1, 2026, with prices from €740 to €2,373, a €1,633 spread on the same certified stone. Moon Ocean lists it at €2,373. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5556326450
Dimensions6.65 × 5.58 × 4.03 mm
L/W Ratio1.19
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Etch Channel, Crystal, Needle, Indented Natural
Top View
6.65 mm5.58 mm0.91 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5556326450
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 60.6%

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: €2,373 EUR|Low: €610 EUR|High: €2,387 EUR|Avg: €1,160 EUR|+0.8%
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
Retailer 18
November 2, 2026
Retailer 7€740 EUR
Retailer 8€758 EUR
Retailer 5€760 EUR
Retailer 6€789 EUR
Retailer 14€831 EUR
Retailer 16€831 EUR
Retailer 15€863 EUR
Retailer 9€939 EUR
Retailer 17€942 EUR
Retailer 12€958 EUR
Retailer 3€1,016 EUR
Retailer 18€1,016 EUR
Retailer 4€1,043 EUR
Retailer 10€1,214 EUR
Retailer 11€1,286 EUR
Retailer 2€1,679 EUR
Retailer 13€2,236 EUR
Moon Ocean€2,373 EUR

27 data points across 18 retailers

15 retailers€740 EUR to €2,373 EUR

A
Cheapest Retailer
-
€740 EUR
$830 USD
A
Retailer 2
-
€758 EUR
$850 USD
View
A
Retailer 3
-
€789 EUR
$885 USD
View
A
Retailer 4
-
€831 EUR
$932 USD
View
A
Retailer 5
-
€831 EUR
$932 USD
View
A
Retailer 6
-
€863 EUR
$968 USD
View
A
Retailer 7
-
€942 EUR
$1,057 USD
View
A
Retailer 8
-
€958 EUR
$1,075 USD
View
A
Retailer 9
-
€1,016 EUR
$1,140 USD
View
A
Retailer 10
-
€1,016 EUR
$1,140 USD
View
A
Retailer 11
-
€1,043 EUR
$1,170 USD
View
B+
Retailer 12
-
€1,286 EUR
View
B+
Retailer 13
-
€1,679 EUR
£1,483 GBP
View
B
Retailer 14
-
€2,236 EUR
$2,508 USD
View
Most Expensive
B
Moon Ocean
NVN-FF42C4091-450 · Nov 2
€2,373 EUR
£2,096 GBP
View
14 more retailers have this diamond
Prices start from €740 EURSave up to €1,633 EUR

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
€740 EUR