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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6552654453

Certificate GIA 6552654453

Diamond specifications and retailer prices

From $4,032 SGD
As of November 4, 2026
Save $3,636 SGD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,669 SGD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic 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 6552654453. Listed at 15 retailers as of November 4, 2026, with prices from $4,032 to $7,669, a $3,636 spread on the same certified stone. Helzberg Diamonds lists it at $7,669. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.79°
Pavilion angle41.05°
OriginNatural
Grading LabGIA
CertificateGIA 6552654453
Dimensions10.44 × 5.06 × 3.18 mm
L/W Ratio2.06
Culet sizeNone
Top View
10.44 mm5.06 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552654453
Side View
Table 58.0%Crown 35.79°Girdle: MED-VTKPavilion 41.05°Culet: NoneDepth 62.8%

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: Nov 4
Current: $7,669 SGD|Low: $4,032 SGD|High: $7,669 SGD|Avg: $5,282 SGD|+4.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 11$4,032 SGD
Retailer 9$4,131 SGD
Retailer 6$4,142 SGD
Retailer 12$4,348 SGD
Retailer 13$4,356 SGD
Retailer 8$4,676 SGD
Retailer 5$4,856 SGD
Retailer 3$5,149 SGD
Retailer 4$5,228 SGD
Retailer 7$5,361 SGD
Retailer 2$5,596 SGD
Retailer 14$6,802 SGD
Retailer 10$7,236 SGD
Helzberg Diamonds$7,669 SGD

34 data points across 14 retailers

15 retailers$4,032 SGD to $7,669 SGD

A
Cheapest Retailer
-
$4,032 SGD
A
Retailer 2
-
$4,131 SGD
View
A
Retailer 3
-
$4,142 SGD
View
A
Retailer 4
-
$4,348 SGD
View
B+
Retailer 5
-
$4,356 SGD
View
B+
Retailer 6
-
$4,676 SGD
View
B+
Retailer 7
-
$4,856 SGD
View
B+
Retailer 8
-
$5,149 SGD
View
B+
Retailer 9
-
$5,228 SGD
View
B+
Retailer 10
-
$5,361 SGD
View
B
Retailer 11
-
$5,546 SGD
View
B+
Retailer 12
-
$5,596 SGD
View
B
Retailer 13
-
$6,802 SGD
View
B
Retailer 14
-
$7,236 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLIMLKKLJ · Nov 6
$7,669 SGD
$6,004 USD
View
14 more retailers have this diamond
Prices start from $4,032 SGDSave up to $3,636 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 Marquise
$4,032 SGD