Heart|Natural|GIA

0.90ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 6531902121

Certificate GIA 6531902121

Diamond specifications and retailer prices

From $1,165 USD
HK$9,100 HKD
As of October 29, 2026
Save $1,164 USD (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,931 USD 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 14 retailers as of October 23, 2026, with a 100% 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 29
Current: $1,509 USD|Low: $1,126 USD|High: $2,866 USD|Avg: $1,781 USD|-13.4%
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
October 29, 2026
Retailer 8$1,165 USD
Retailer 6$1,410 USD
Retailer 12$1,416 USD
Retailer 7$1,427 USD
Retailer 1$1,509 USD
Retailer 10$1,550 USD
Retailer 2$1,625 USD
Retailer 11$1,627 USD
Retailer 13$1,757 USD
Retailer 4$2,003 USD
Retailer 5$2,172 USD
Retailer 9$2,328 USD
Retailer 3$2,714 USD

33 data points across 13 retailers

14 retailers$1,165 USD to $2,328 USD

A
Cheapest Retailer
-
$1,165 USD
HK$9,100 HKD
A
Retailer 2
-
$1,410 USD
€1,343 EUR
View
A
Retailer 3
-
$1,416 USD
View
Final sale: no returns
A
Retailer 4
-
$1,427 USD
View
A
Retailer 5
-
$1,509 USD
£1,188 GBP
View
B+
Retailer 6
-
$1,550 USD
View
B+
Retailer 7
-
$1,627 USD
SGD 2,199 SGD
View
B+
Retailer 8
-
$1,757 USD
SGD 2,374 SGD
View
B+
Retailer 9
-
$1,968 USD
A$3,028 AUD
View
B+
Retailer 10
-
$2,003 USD
A$3,082 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$2,172 USD
ZAR 35,084 ZAR
View
Price last confirmed 25 days ago
B+
Retailer 12
-
$2,328 USD
View
B
Retailer 13
-
$2,714 USD
£2,137 GBP
View
Price last confirmed 21 days ago
Most Expensive
B
NZ Jewellers
73da8a21-f709-44d2-ae13-d586207141f0 · Sep 25
$3,931 USD
View
Price last confirmed 34 days ago
13 more retailers have this diamond
Prices start from $1,165 USDSave up to $1,164 USD

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
$1,165 USD