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Heart|Natural|GIA

0.91ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 5231889631

Certificate GIA 5231889631

Diamond specifications and retailer prices

From €871 EUR
HK$7,600 HKD
As of October 31, 2026
Save €664 EUR (43%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €3,218 EUR 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 E 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 5231889631. Listed at 16 retailers as of October 31, 2026, with a 76% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle38°
OriginNatural
Grading LabGIA
CertificateGIA 5231889631
Dimensions6.09 × 6.75 × 3.83 mm
L/W Ratio1.11
Top View
6.09 mm6.75 mm0.91 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5231889631
Side View
Table 58.0%CrownGirdle: STK-VTKPavilion 38°Culet: NoneDepth 56.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €1,066 EUR|Low: €836 EUR|High: €2,571 EUR|Avg: €1,443 EUR|-7.3%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 9€871 EUR
Retailer 1€1,066 EUR
Retailer 2€1,088 EUR
Retailer 11€1,103 EUR
Retailer 13€1,113 EUR
Retailer 10€1,117 EUR
Retailer 15€1,146 EUR
Retailer 16€1,208 EUR
Retailer 12€1,249 EUR
Retailer 3€1,280 EUR
Retailer 7€1,543 EUR
Retailer 5€1,632 EUR
Retailer 6€1,731 EUR
Retailer 14€1,735 EUR
Retailer 8€2,187 EUR
Retailer 4€2,299 EUR

30 data points across 16 retailers

16 retailers€871 EUR to €1,535 EUR

A
Cheapest Retailer
-
€871 EUR
HK$7,600 HKD
A
Retailer 2
-
€1,066 EUR
View
A
Retailer 3
-
€1,088 EUR
$1,216 USD
View
Final sale: no returns
A
Retailer 4
-
€1,103 EUR
$1,232 USD
View
A
Retailer 5
-
€1,113 EUR
$1,244 USD
View
A
Retailer 6
-
€1,117 EUR
£982 GBP
View
A
Retailer 7
-
€1,146 EUR
$1,280 USD
View
Retailer 8
-
€1,208 EUR
SGD 1,824 SGD
View
Price last confirmed 8 days ago
A
Retailer 9
-
€1,249 EUR
$1,395 USD
View
B+
Retailer 10
-
€1,535 EUR
A$2,638 AUD
View
Retailer 11
-
€1,543 EUR
A$2,652 AUD
View
Price last confirmed 27 days ago
Retailer 12
-
€1,731 EUR
ZAR 31,250 ZAR
View
Price last confirmed 27 days ago
Retailer 13
-
€1,735 EUR
$1,938 USD
View
Price last confirmed 7 days ago
Retailer 14
-
€2,187 EUR
£1,924 GBP
View
Price last confirmed 26 days ago
Retailer 15
-
€2,299 EUR
£2,023 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
abe365ce-3079-4e6a-bb65-d767b28415f3 · Sep 25
€3,218 EUR
$3,595 USD
View
Price last confirmed 36 days ago
15 more retailers have this diamond
Prices start from €871 EURSave up to €664 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
€871 EUR