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Marquise|Natural|GIA

1.20ct J SI2 Marquise Natural Diamond

VG • J/SI2 • GIA 2567197770

Certificate GIA 2567197770

Diamond specifications and retailer prices

From $3,615 AUD
As of November 5, 2026
Save $2,963 AUD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,578 AUD at Helzberg Diamonds · As of November 6, 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 J 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 2567197770. Listed at 14 retailers as of November 5, 2026, with prices from $3,615 to $6,578, a $2,963 spread on the same certified stone. Helzberg Diamonds lists it at $6,578. 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
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle39.69°
OriginNatural
Grading LabGIA
CertificateGIA 2567197770
Dimensions10.02 × 5.41 × 3.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.02 mm5.41 mm1.20 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567197770
Side View
Table 58.0%Crown 39.9°Girdle: THK-VTKPavilion 39.69°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,578 AUD|Low: $3,595 AUD|High: $7,060 AUD|Avg: $4,659 AUD|-6.8%
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 7, 2026
Retailer 10$3,615 AUD
Retailer 7$3,761 AUD
Retailer 12$3,826 AUD
Retailer 5$3,879 AUD
Retailer 6$4,066 AUD
Retailer 2$4,078 AUD
Retailer 4$4,167 AUD
Retailer 14$4,483 AUD
Retailer 11$4,526 AUD
Retailer 3$4,646 AUD
Retailer 8$4,800 AUD
Retailer 9$4,906 AUD
Retailer 13$6,190 AUD
Helzberg Diamonds$6,578 AUD

29 data points across 14 retailers

14 retailers$3,615 AUD to $6,578 AUD

B+
Cheapest Retailer
-
$3,615 AUD
B+
Retailer 2
-
$3,761 AUD
View
B+
Retailer 3
-
$3,826 AUD
View
B+
Retailer 4
-
$3,879 AUD
View
B+
Retailer 5
-
$4,066 AUD
View
B+
Retailer 6
-
$4,078 AUD
View
B+
Retailer 7
-
$4,167 AUD
View
B
Retailer 8
-
$4,483 AUD
View
B
Retailer 9
-
$4,526 AUD
View
B
Retailer 10
-
$4,646 AUD
View
B
Retailer 11
-
$4,800 AUD
View
B
Retailer 12
-
$4,906 AUD
View
B
Retailer 13
-
$6,190 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRILMNHPNNNG · Nov 6
$6,578 AUD
$4,520 USD
View
13 more retailers have this diamond
Prices start from $3,615 AUDSave up to $2,963 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.

B+
1.20ct Marquise
$3,615 AUD