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Marquise|Natural|GIA

1.20ct F SI2 Marquise Natural Diamond

VG • F/SI2 • GIA 3555615862

Certificate GIA 3555615862

Diamond specifications and retailer prices

From $4,037 AUD
As of November 4, 2026
Save $3,644 AUD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,682 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 F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3555615862. Listed at 12 retailers as of November 4, 2026, with prices from $4,037 to $7,682, a $3,644 spread on the same certified stone. Helzberg Diamonds lists it at $7,682. 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
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.74°
Pavilion angle39.75°
OriginNatural
Grading LabGIA
CertificateGIA 3555615862
Dimensions10.22 × 5.50 × 3.54 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.22 mm5.50 mm1.20 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555615862
Side View
Table 58.0%Crown 39.74°Girdle: THN-VTKPavilion 39.75°Culet: NoneDepth 64.3%

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: Nov 4
Current: $7,682 AUD|Low: $4,037 AUD|High: $8,242 AUD|Avg: $5,426 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
November 6, 2026
Retailer 6$4,037 AUD
Retailer 5$4,136 AUD
Retailer 7$4,353 AUD
Retailer 3$4,617 AUD
Retailer 4$4,714 AUD
Retailer 10$4,864 AUD
Retailer 8$5,191 AUD
Retailer 9$5,314 AUD
Retailer 2$5,369 AUD
Retailer 11$7,270 AUD
Helzberg Diamonds$7,682 AUD

39 data points across 11 retailers

12 retailers$4,037 AUD to $7,682 AUD

A
Cheapest Retailer
-
$4,037 AUD
A
Retailer 2
-
$4,136 AUD
View
A
Retailer 3
-
$4,353 AUD
View
A
Retailer 4
-
$4,617 AUD
View
A
Retailer 5
-
$4,714 AUD
View
A
Retailer 6
-
$4,864 AUD
View
B+
Retailer 7
-
$5,191 AUD
View
B+
Retailer 8
-
$5,314 AUD
View
B+
Retailer 9
-
$5,369 AUD
View
B+
Retailer 10
-
$5,961 AUD
View
B
Retailer 11
-
$7,270 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRJLLLMHLOMI · Nov 6
$7,682 AUD
$5,278 USD
View
11 more retailers have this diamond
Prices start from $4,037 AUDSave up to $3,644 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
$4,037 AUD