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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 2558612489

Certificate GIA 2558612489

Diamond specifications and retailer prices

From $3,439 AUD
As of November 5, 2026
Save $2,485 AUD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,924 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2558612489. Listed at 11 retailers as of November 5, 2026, with prices from $3,439 to $5,924, a $2,485 spread on the same certified stone. Wholesale Diamonds Direct lists it at $5,924. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.03°
Pavilion angle42.12°
OriginNatural
Grading LabGIA
CertificateGIA 2558612489
Dimensions10.01 × 5.49 × 3.69 mm
L/W Ratio1.82
Culet sizeNone
Top View
10.01 mm5.49 mm1.21 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558612489
Side View
Table 61.0%Crown 42.03°Girdle: THN-VTKPavilion 42.12°Culet: NoneDepth 67.1%

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: Nov 5
Current: $3,883 AUD|Low: $3,420 AUD|High: $6,405 AUD|Avg: $4,402 AUD|-8.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 7, 2026
Retailer 5$3,439 AUD
Retailer 2$3,580 AUD
Retailer 6$3,641 AUD
Retailer 1$3,883 AUD
Retailer 9$3,963 AUD
Retailer 3$4,247 AUD
Retailer 7$4,277 AUD
Retailer 8$4,452 AUD
Retailer 4$4,667 AUD
Wholesale Diamonds Direct$5,924 AUD

42 data points across 10 retailers

11 retailers$3,439 AUD to $5,924 AUD

A
Cheapest Retailer
-
$3,439 AUD
A
Retailer 2
-
$3,580 AUD
View
A
Retailer 3
-
$3,641 AUD
View
B+
Retailer 4
-
$3,883 AUD
View
B+
Retailer 5
-
$3,963 AUD
View
B+
Retailer 6
-
$4,247 AUD
View
B+
Retailer 7
-
$4,277 AUD
View
B+
Retailer 8
-
$4,452 AUD
View
B+
Retailer 9
-
$4,667 AUD
View
B+
Retailer 10
-
$4,809 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
584564609 · Nov 6
$5,924 AUD
$4,070 USD
View
10 more retailers have this diamond
Prices start from $3,439 AUDSave up to $2,485 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
$3,439 AUD