Heart|Natural|GIA

0.91ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 3555095431

Certificate GIA 3555095431

Diamond specifications and retailer prices

From €1,675 EUR
$1,871 USD
As of October 26, 2026
Save €2,912 EUR (63%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,586 EUR at Moon Ocean · As of October 28, 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 D 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 3555095431. Listed at 21 retailers as of October 26, 2026, with prices from €1,675 to €4,586, a €2,912 spread on the same certified stone. Moon Ocean lists it at €4,586. 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
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555095431
Dimensions5.51 × 6.55 × 4.17 mm
L/W Ratio1.19
Top View
5.51 mm6.55 mm0.91 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555095431
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: €4,586 EUR|Low: €1,181 EUR|High: €4,605 EUR|Avg: €2,089 EUR|+25.2%
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
Retailer 19
Retailer 20
October 28, 2026
Retailer 10€1,181 EUR
Retailer 9€1,378 EUR
Retailer 8€1,447 EUR
Retailer 12€1,617 EUR
Retailer 7€1,675 EUR
Retailer 4€1,725 EUR
Retailer 5€1,815 EUR
Retailer 11€1,832 EUR
Retailer 16€1,909 EUR
Retailer 17€1,909 EUR
Retailer 3€1,929 EUR
Retailer 18€1,998 EUR
Retailer 6€2,034 EUR
Retailer 20€2,082 EUR
Retailer 2€2,082 EUR
Retailer 14€2,203 EUR
Retailer 19€2,765 EUR
Retailer 15€3,350 EUR
Retailer 13€3,992 EUR
Moon Ocean€4,586 EUR

16 data points across 20 retailers

21 retailers€1,675 EUR to €4,586 EUR

Retailer 1
-
€1,272 EUR
HK$11,100 HKD
Price last confirmed 59 days ago
Retailer 2
-
€1,378 EUR
View
Price last confirmed 40 days ago
B+
Retailer 3
-
€1,675 EUR
$1,871 USD
View
B+
Retailer 4
-
€1,725 EUR
$1,927 USD
View
B+
Retailer 5
-
€1,815 EUR
$2,028 USD
View
B+
Retailer 6
-
€1,832 EUR
A$3,148 AUD
View
Retailer 7
-
€1,909 EUR
$2,133 USD
View
Price last confirmed 9 days ago
Retailer 8
-
€1,909 EUR
$2,133 USD
View
Price last confirmed 7 days ago
Retailer 9
-
€1,929 EUR
$2,155 USD
View
Price last confirmed 5 days ago
Retailer 10
-
€1,998 EUR
$2,232 USD
View
Price last confirmed 16 days ago
Retailer 11
-
€1,998 EUR
$2,232 USD
View
Price last confirmed 10 days ago
Retailer 12
-
€2,034 EUR
$2,272 USD
View
Price last confirmed 17 days ago
B
Retailer 13
-
€2,082 EUR
$2,326 USD
View
B+
Retailer 14
-
€2,082 EUR
£1,832 GBP
View
B
Retailer 15
-
€2,203 EUR
$2,461 USD
View
Retailer 16
-
€2,203 EUR
$2,461 USD
View
Price last confirmed 17 days ago
Retailer 17
-
€2,765 EUR
ZAR 49,909 ZAR
View
Price last confirmed 11 days ago
B
Retailer 18
-
€3,350 EUR
£2,947 GBP
View
B
Retailer 19
-
€3,992 EUR
$4,460 USD
View
Retailer 20
-
€3,992 EUR
$4,460 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Moon Ocean
NVN-D06AD69D9-431 · Oct 28
€4,586 EUR
£4,035 GBP
View
20 more retailers have this diamond
Prices start from €1,675 EURSave up to €2,912 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.

B+
0.91ct Heart
€1,675 EUR