CaratHunter
Plans
Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

GD • F/SI2 • GIA 1555561523

Certificate GIA 1555561523

Diamond specifications and retailer prices

From $4,666 AUD
As of November 4, 2026
Save $4,206 AUD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,872 AUD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1555561523. Listed at 12 retailers as of November 4, 2026, with prices from $4,666 to $8,872, a $4,206 spread on the same certified stone. Helzberg Diamonds lists it at $8,872. 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

1.21
Carat
F
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.64°
Pavilion angle40.64°
OriginNatural
Grading LabGIA
CertificateGIA 1555561523
Dimensions9.96 × 5.47 × 3.68 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.96 mm5.47 mm1.21 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555561523
Side View
Table 59.0%Crown 43.64°Girdle: STK-VTKPavilion 40.64°Culet: NoneDepth 67.3%

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: Nov 4
Current: $8,872 AUD|Low: $4,666 AUD|High: $9,063 AUD|Avg: $6,227 AUD|-2.1%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 7$4,666 AUD
Retailer 6$4,877 AUD
Retailer 3$5,088 AUD
Retailer 2$5,388 AUD
Retailer 4$5,615 AUD
Retailer 11$5,621 AUD
Retailer 9$5,953 AUD
Retailer 10$6,038 AUD
Retailer 5$6,206 AUD
Retailer 8$8,364 AUD
Helzberg Diamonds$8,872 AUD

41 data points across 11 retailers

12 retailers$4,666 AUD to $8,872 AUD

A
Cheapest Retailer
-
$4,666 AUD
A
Retailer 2
-
$4,877 AUD
View
B+
Retailer 3
-
$5,088 AUD
View
B+
Retailer 4
-
$5,388 AUD
View
B+
Retailer 5
-
$5,615 AUD
View
B+
Retailer 6
-
$5,621 AUD
View
B+
Retailer 7
-
$5,953 AUD
View
B+
Retailer 8
-
$6,038 AUD
View
B+
Retailer 9
-
$6,206 AUD
View
B
Retailer 10
-
$6,548 AUD
View
B
Retailer 11
-
$8,364 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLLMHLIJ · Nov 6
$8,872 AUD
$6,096 USD
View
11 more retailers have this diamond
Prices start from $4,666 AUDSave up to $4,206 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
1.21ct Marquise
$4,666 AUD