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Marquise|Natural|GIA

1.00ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 3555958830

Certificate GIA 3555958830

Diamond specifications and retailer prices

From $2,606 SGD
As of October 29, 2026
Save $2,464 SGD (49%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,070 SGD at Helzberg Diamonds · As of October 31, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555958830. Listed at 13 retailers as of October 29, 2026, with prices from $2,606 to $5,070, a $2,464 spread on the same certified stone. Helzberg Diamonds lists it at $5,070. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40°
Pavilion angle40.33°
OriginNatural
Grading LabGIA
CertificateGIA 3555958830
Dimensions9.82 × 5.18 × 3.32 mm
L/W Ratio1.90
Culet sizeNone
Top View
9.82 mm5.18 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555958830
Side View
Table 59.0%Crown 40°Girdle: STK-THKPavilion 40.33°Culet: NoneDepth 64.0%

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: $5,070 SGD|Low: $2,606 SGD|High: $5,285 SGD|Avg: $3,437 SGD|-4.1%
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
October 31, 2026
Retailer 10$2,606 SGD
Retailer 9$2,806 SGD
Retailer 11$2,830 SGD
Retailer 7$2,857 SGD
Retailer 8$2,903 SGD
Retailer 2$3,060 SGD
Retailer 5$3,081 SGD
Retailer 12$3,346 SGD
Retailer 3$3,349 SGD
Retailer 4$3,527 SGD
Retailer 6$3,643 SGD
Retailer 13$4,644 SGD
Helzberg Diamonds$5,070 SGD

38 data points across 13 retailers

13 retailers$2,606 SGD to $5,070 SGD

A
Cheapest Retailer
-
$2,606 SGD
A
Retailer 2
-
$2,806 SGD
$2,195 USD
View
A
Retailer 3
-
$2,830 SGD
$2,214 USD
View
A
Retailer 4
-
$2,857 SGD
$2,235 USD
View
A
Retailer 5
-
$2,903 SGD
$2,271 USD
View
A
Retailer 6
-
$3,060 SGD
£1,885 GBP
View
A
Retailer 7
-
$3,081 SGD
View
A
Retailer 8
-
$3,346 SGD
$2,617 USD
View
A
Retailer 9
-
$3,349 SGD
$2,620 USD
View
A
Retailer 10
-
$3,527 SGD
$2,759 USD
View
A
Retailer 11
-
$3,643 SGD
€2,714 EUR
View
B+
Retailer 12
-
$4,644 SGD
$3,633 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRJLLLPLOOJG · Oct 31
$5,070 SGD
$3,966 USD
View
12 more retailers have this diamond
Prices start from $2,606 SGDSave up to $2,464 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
$2,606 SGD