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Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 2557752766

Certificate GIA 2557752766

Diamond specifications and retailer prices

From $5,019 AUD
$3,518 USD
As of October 31, 2026
Save $3,976 AUD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,995 AUD at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557752766. Listed at 13 retailers as of October 31, 2026, with prices from $5,019 to $8,995, a $3,976 spread on the same certified stone. Helzberg Diamonds lists it at $8,995. 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

1.20
Carat
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.74°
Pavilion angle38.88°
OriginNatural
Grading LabGIA
CertificateGIA 2557752766
Dimensions9.99 × 5.39 × 3.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
9.99 mm5.39 mm1.20 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557752766
Side View
Table 58.0%Crown 40.74°Girdle: STK-VTKPavilion 38.88°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $8,995 AUD|Low: $5,019 AUD|High: $9,365 AUD|Avg: $6,452 AUD|-3.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 9$5,019 AUD
Retailer 4$5,051 AUD
Retailer 8$5,113 AUD
Retailer 7$5,362 AUD
Retailer 3$5,478 AUD
Retailer 2$5,734 AUD
Retailer 10$6,373 AUD
Retailer 12$6,433 AUD
Retailer 5$6,481 AUD
Retailer 6$6,963 AUD
Retailer 11$8,950 AUD
Helzberg Diamonds$8,995 AUD

38 data points across 12 retailers

13 retailers$5,019 AUD to $8,995 AUD

A
Cheapest Retailer
-
$5,019 AUD
$3,518 USD
A
Retailer 2
-
$5,051 AUD
$3,540 USD
View
A
Retailer 3
-
$5,113 AUD
SGD 4,842 SGD
View
B+
Retailer 4
-
$5,362 AUD
$3,758 USD
View
B+
Retailer 5
-
$5,478 AUD
SGD 5,188 SGD
View
B+
Retailer 6
-
$5,734 AUD
£3,164 GBP
View
B+
Retailer 7
-
$6,373 AUD
$4,466 USD
View
B+
Retailer 8
-
$6,433 AUD
$4,508 USD
View
B+
Retailer 9
-
$6,481 AUD
€4,326 EUR
View
B
Retailer 10
-
$6,696 AUD
$4,693 USD
View
B+
Retailer 11
-
$6,963 AUD
$4,880 USD
View
Retailer 12
-
$8,950 AUD
$6,273 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Helzberg Diamonds
XZRILLNNLINMM · Nov 2
$8,995 AUD
$6,304 USD
View
12 more retailers have this diamond
Prices start from $5,019 AUDSave up to $3,976 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
1.20ct Marquise
$5,019 AUD