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Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 3555909668

Certificate GIA 3555909668

Diamond specifications and retailer prices

From $3,913 AUD
As of October 31, 2026
Save $3,530 AUD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,443 AUD at Helzberg Diamonds · As of November 4, 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 $3,913 to $7,443, a $3,530 spread on the same certified stone. Helzberg Diamonds lists it at $7,443. 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: $7,443 AUD|Low: $3,913 AUD|High: $7,674 AUD|Avg: $5,133 AUD|-3.0%
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
Retailer 15
November 4, 2026
Retailer 11$3,913 AUD
Retailer 10$4,002 AUD
Retailer 7$4,164 AUD
Retailer 12$4,220 AUD
Retailer 13$4,233 AUD
Retailer 2$4,569 AUD
Retailer 5$4,715 AUD
Retailer 3$5,036 AUD
Retailer 14$5,040 AUD
Retailer 4$5,159 AUD
Retailer 8$5,218 AUD
Retailer 9$5,430 AUD
Retailer 15$6,601 AUD
Retailer 6$7,028 AUD
Helzberg Diamonds$7,443 AUD

35 data points across 15 retailers

15 retailers$3,913 AUD to $7,443 AUD

A
Cheapest Retailer
-
$3,913 AUD
A
Retailer 2
-
$4,002 AUD
View
B+
Retailer 3
-
$4,164 AUD
View
B+
Retailer 4
-
$4,220 AUD
View
A
Retailer 5
-
$4,233 AUD
View
B+
Retailer 6
-
$4,569 AUD
View
B+
Retailer 7
-
$4,715 AUD
View
B+
Retailer 8
-
$5,036 AUD
View
B+
Retailer 9
-
$5,040 AUD
View
B+
Retailer 10
-
$5,159 AUD
View
B+
Retailer 11
-
$5,218 AUD
View
B+
Retailer 12
-
$5,430 AUD
View
B
Retailer 13
-
$6,601 AUD
View
B
Retailer 14
-
$7,028 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRJLLLPGPMMO · Nov 4
$7,443 AUD
$5,198 USD
View
14 more retailers have this diamond
Prices start from $3,913 AUDSave up to $3,530 AUD

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
$3,913 AUD