Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6435180932

Certificate GIA 6435180932

Diamond specifications and retailer prices

From $3,338 SGD
As of November 6, 2026
Save $3,829 SGD (53%) vs most expensive(unlock to see where)
34 retailers carry this diamond
Most expensive: $7,167 SGD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct 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 6435180932. Listed at 34 retailers as of November 5, 2026, with a 115% 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

1.00
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle33°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6435180932
Dimensions6.48 × 6.42 × 3.90 mm
L/W Ratio1.01
Top View
6.48 mm6.42 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6435180932
Side View
Table 62.0%Crown 33°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $4,230 SGD|Low: $3,385 SGD|High: $6,961 SGD|Avg: $4,871 SGD|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$3,385 SGD
Retailer 3$3,440 SGD
Retailer 12$3,727 SGD
Retailer 5$3,933 SGD
Retailer 2$4,227 SGD
Retailer 1$4,230 SGD
Retailer 4$4,411 SGD
Retailer 6$4,777 SGD
Retailer 8$4,785 SGD
Retailer 7$5,021 SGD
Retailer 11$6,813 SGD
Retailer 10$6,880 SGD

36 data points across 12 retailers

34 retailers$3,338 SGD to $7,167 SGD

A
Cheapest Retailer
-
$3,338 SGD
A
Retailer 2
-
$3,385 SGD
View
A
Retailer 3
-
$3,440 SGD
View
Final sale: no returns
A
Retailer 4
-
$3,640 SGD
View
Retailer 5
-
$3,727 SGD
View
Price last confirmed 50 days ago
Retailer 6
-
$3,727 SGD
View
Price last confirmed 28 days ago
Retailer 7
-
$3,727 SGD
View
Price last confirmed 8 days ago
Retailer 8
-
$3,727 SGD
View
Price last confirmed 21 days ago
Retailer 9
-
$3,727 SGD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$3,763 SGD
View
Retailer 11
-
$3,870 SGD
View
Price last confirmed 38 days ago
A
Retailer 12
-
$3,933 SGD
View
B+
Retailer 13
-
$4,075 SGD
View
B+
Retailer 14
-
$4,075 SGD
View
B+
Retailer 15
-
$4,215 SGD
View
B+
Retailer 16
-
$4,227 SGD
View
Retailer 17
-
$4,227 SGD
View
Price last confirmed 28 days ago
B+
Retailer 18
-
$4,230 SGD
View
Retailer 19
-
$4,301 SGD
View
Price last confirmed 28 days ago
Retailer 20
-
$4,301 SGD
View
Price last confirmed 45 days ago
Retailer 21
-
$4,301 SGD
View
Price last confirmed 16 days ago
B+
Retailer 22
-
$4,301 SGD
View
Retailer 23
-
$4,411 SGD
View
Price last confirmed 33 days ago
B+
Retailer 24
-
$4,582 SGD
View
Retailer 25
-
$4,772 SGD
View
Price last confirmed 22 days ago
B+
Retailer 26
-
$4,777 SGD
View
B+
Retailer 27
-
$4,785 SGD
View
B+
Retailer 28
-
$5,021 SGD
View
Retailer 29
-
$6,813 SGD
View
Price last confirmed 9 days ago
B
Retailer 30
-
$6,880 SGD
View
B
Retailer 31
-
$7,167 SGD
View
Retailer 32
-
$7,167 SGD
View
Price last confirmed 39 days ago
Retailer 33
-
$7,167 SGD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
8b22a2a6-3c47-4f47-b165-e8d03f8bd461 · Oct 20
$7,167 SGD
$5,611 USD
View
Price last confirmed 16 days ago
33 more retailers have this diamond
Prices start from $3,338 SGDSave up to $3,829 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
1.00ct Round
$3,338 SGD