Heart|Natural|GIA

0.90ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 6531902121

Certificate GIA 6531902121

Diamond specifications and retailer prices

From €1,043 EUR
HK$9,100 HKD
As of October 30, 2026
Save €719 EUR (41%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,519 EUR at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct 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 6531902121. Listed at 15 retailers as of October 30, 2026, with a 69% 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

0.90
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle37.9°
OriginNatural
Grading LabGIA
CertificateGIA 6531902121
Dimensions5.68 × 6.64 × 3.96 mm
L/W Ratio1.17
Top View
5.68 mm6.64 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531902121
Side View
Table 58.0%CrownGirdle: MED-THKPavilion 37.9°Culet: NoneDepth 59.6%

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: Oct 30
Current: €1,315 EUR|Low: €1,008 EUR|High: €2,527 EUR|Avg: €1,589 EUR|-14.5%
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 1, 2026
Retailer 9€1,043 EUR
Retailer 6€1,225 EUR
Retailer 12€1,267 EUR
Retailer 8€1,277 EUR
Retailer 1€1,315 EUR
Retailer 7€1,352 EUR
Retailer 2€1,455 EUR
Retailer 11€1,457 EUR
Retailer 13€1,572 EUR
Retailer 4€1,793 EUR
Retailer 5€1,944 EUR
Retailer 10€2,084 EUR
Retailer 3€2,429 EUR

34 data points across 13 retailers

15 retailers€1,043 EUR to €1,762 EUR

A
Cheapest Retailer
-
€1,043 EUR
HK$9,100 HKD
A
Retailer 2
-
€1,225 EUR
View
A
Retailer 3
-
€1,267 EUR
$1,416 USD
View
Final sale: no returns
A
Retailer 4
-
€1,277 EUR
$1,427 USD
View
A
Retailer 5
-
€1,279 EUR
$1,429 USD
View
A
Retailer 6
-
€1,315 EUR
£1,157 GBP
View
A
Retailer 7
-
€1,352 EUR
$1,510 USD
View
Retailer 8
-
€1,457 EUR
SGD 2,199 SGD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
€1,572 EUR
SGD 2,374 SGD
View
B+
Retailer 10
-
€1,762 EUR
A$3,028 AUD
View
Retailer 11
-
€1,793 EUR
A$3,082 AUD
View
Price last confirmed 27 days ago
Retailer 12
-
€1,944 EUR
ZAR 35,084 ZAR
View
Price last confirmed 28 days ago
Retailer 13
-
€2,084 EUR
$2,328 USD
View
Price last confirmed 9 days ago
Retailer 14
-
€2,429 EUR
£2,137 GBP
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
73da8a21-f709-44d2-ae13-d586207141f0 · Sep 25
€3,519 EUR
$3,931 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from €1,043 EURSave up to €719 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
0.90ct Heart
€1,043 EUR