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Heart|Natural|GIA

0.90ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 6531902121

Certificate GIA 6531902121

Diamond specifications and retailer prices

From $1,493 SGD
HK$9,100 HKD
As of October 29, 2026
Save $1,491 SGD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,038 SGD 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 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
Colour
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: $1,934 SGD|Low: $1,444 SGD|High: $3,674 SGD|Avg: $2,282 SGD|-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$1,493 SGD
Retailer 6$1,808 SGD
Retailer 12$1,815 SGD
Retailer 7$1,829 SGD
Retailer 1$1,934 SGD
Retailer 10$1,987 SGD
Retailer 2$2,083 SGD
Retailer 11$2,086 SGD
Retailer 13$2,252 SGD
Retailer 4$2,567 SGD
Retailer 5$2,783 SGD
Retailer 9$2,984 SGD
Retailer 3$3,479 SGD

33 data points across 13 retailers

15 retailers$1,493 SGD to $2,984 SGD

A
Cheapest Retailer
-
$1,493 SGD
HK$9,100 HKD
A
Retailer 2
-
$1,808 SGD
€1,343 EUR
View
A
Retailer 3
-
$1,815 SGD
$1,416 USD
View
Final sale: no returns
A
Retailer 4
-
$1,829 SGD
$1,427 USD
View
B
Retailer 5
-
$1,832 SGD
$1,429 USD
View
A
Retailer 6
-
$1,934 SGD
£1,188 GBP
View
B+
Retailer 7
-
$1,987 SGD
$1,550 USD
View
B+
Retailer 8
-
$2,086 SGD
View
B+
Retailer 9
-
$2,252 SGD
View
B+
Retailer 10
-
$2,523 SGD
A$3,028 AUD
View
Retailer 11
-
$2,567 SGD
A$3,082 AUD
View
Price last confirmed 24 days ago
Retailer 12
-
$2,783 SGD
ZAR 35,084 ZAR
View
Price last confirmed 25 days ago
B+
Retailer 13
-
$2,984 SGD
$2,328 USD
View
Retailer 14
-
$3,479 SGD
£2,137 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
73da8a21-f709-44d2-ae13-d586207141f0 · Sep 25
$5,038 SGD
$3,931 USD
View
Price last confirmed 34 days ago
14 more retailers have this diamond
Prices start from $1,493 SGDSave up to $1,491 SGD

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
$1,493 SGD