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Round|Natural|GIA

1.03ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1505020864

Certificate GIA 1505020864

Diamond specifications and retailer prices

From $4,140 SGD
As of November 4, 2026
Save $5,528 SGD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,667 SGD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1505020864. Listed at 18 retailers as of November 4, 2026, with prices from $4,140 to $9,667, a $5,528 spread on the same certified stone. Diamond Quarter lists it at $9,667. 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

1.03
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1505020864
Dimensions6.39 × 6.44 × 4.03 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.39 mm6.44 mm1.03 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1505020864
Side View
Table 57.0%Crown 36.5°Girdle: MediumPavilion 40.8°Culet: NDepth 62.7%

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: Nov 4
Current: $5,918 SGD|Low: $3,730 SGD|High: $8,205 SGD|Avg: $5,431 SGD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8$4,367 SGD
Retailer 5$4,476 SGD
Retailer 7$4,849 SGD
Retailer 3$4,987 SGD
Retailer 6$5,194 SGD
Retailer 2$5,639 SGD
Retailer 1$5,918 SGD
Retailer 4$8,108 SGD

40 data points across 8 retailers

18 retailers$4,140 SGD to $9,667 SGD

B+
Cheapest Retailer
-
$4,140 SGD
B+
Retailer 2
-
$4,305 SGD
View
B+
Retailer 3
-
$4,367 SGD
View
B+
Retailer 4
-
$4,476 SGD
View
Final sale: no returns
B+
Retailer 5
-
$4,643 SGD
View
Retailer 6
-
$4,849 SGD
View
Price last confirmed 8 days ago
Retailer 7
-
$4,849 SGD
View
Price last confirmed 36 days ago
B+
Retailer 8
-
$4,987 SGD
View
Retailer 9
-
$5,035 SGD
View
Price last confirmed 38 days ago
B+
Retailer 10
-
$5,035 SGD
View
Retailer 11
-
$5,194 SGD
View
Price last confirmed 29 days ago
Retailer 12
-
$5,595 SGD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$5,639 SGD
View
B+
Retailer 14
-
$5,918 SGD
View
B
Retailer 15
-
$8,108 SGD
View
Retailer 16
-
$8,447 SGD
View
Price last confirmed 39 days ago
B
Retailer 17
-
$8,447 SGD
View
Most Expensive
B
Diamond Quarter
1.03SI1E15648828N · Nov 5
$9,667 SGD
£5,960 GBP
View
17 more retailers have this diamond
Prices start from $4,140 SGDSave up to $5,528 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.

B+
1.03ct Round
$4,140 SGD