CaratHunter
Plans
Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 3555909668

Certificate GIA 3555909668

Diamond specifications and retailer prices

From $3,496 SGD
$2,734 USD
As of October 31, 2026
Save $3,152 SGD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,648 SGD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3555909668. Listed at 15 retailers as of October 31, 2026, with prices from $3,496 to $6,648, a $3,152 spread on the same certified stone. Helzberg Diamonds lists it at $6,648. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.66°
Pavilion angle38.05°
OriginNatural
Grading LabGIA
CertificateGIA 3555909668
Dimensions9.65 × 5.19 × 3.17 mm
L/W Ratio1.86
Culet sizeNone
Top View
9.65 mm5.19 mm1.00 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555909668
Side View
Table 59.0%Crown 40.66°Girdle: STK-VTKPavilion 38.05°Culet: NoneDepth 61.1%

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 31
Current: $6,648 SGD|Low: $3,496 SGD|High: $6,904 SGD|Avg: $4,590 SGD|-3.7%
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
Retailer 15
November 2, 2026
Retailer 10$3,496 SGD
Retailer 15$3,561 SGD
Retailer 7$3,719 SGD
Retailer 11$3,769 SGD
Retailer 12$3,780 SGD
Retailer 8$4,088 SGD
Retailer 5$4,211 SGD
Retailer 3$4,498 SGD
Retailer 13$4,502 SGD
Retailer 4$4,609 SGD
Retailer 2$4,669 SGD
Retailer 9$4,850 SGD
Retailer 14$5,896 SGD
Retailer 6$6,278 SGD
Helzberg Diamonds$6,648 SGD

34 data points across 15 retailers

15 retailers$3,496 SGD to $6,648 SGD

A
Cheapest Retailer
-
$3,496 SGD
$2,734 USD
A
Retailer 2
-
$3,561 SGD
View
B+
Retailer 3
-
$3,719 SGD
$2,908 USD
View
B+
Retailer 4
-
$3,769 SGD
$2,947 USD
View
A
Retailer 5
-
$3,780 SGD
$2,956 USD
View
B+
Retailer 6
-
$4,088 SGD
£2,517 GBP
View
B+
Retailer 7
-
$4,211 SGD
View
B+
Retailer 8
-
$4,498 SGD
$3,517 USD
View
B+
Retailer 9
-
$4,502 SGD
$3,520 USD
View
B+
Retailer 10
-
$4,609 SGD
$3,604 USD
View
B+
Retailer 11
-
$4,669 SGD
€3,477 EUR
View
B+
Retailer 12
-
$4,850 SGD
$3,792 USD
View
B
Retailer 13
-
$5,896 SGD
$4,610 USD
View
B
Retailer 14
-
$6,278 SGD
$4,909 USD
View
Most Expensive
B
Helzberg Diamonds
XZRJLLLPGPMMO · Nov 1
$6,648 SGD
$5,198 USD
View
14 more retailers have this diamond
Prices start from $3,496 SGDSave up to $3,152 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
$3,496 SGD