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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6551248081

Certificate GIA 6551248081

Diamond specifications and retailer prices

From $4,029 AUD
As of November 4, 2026
Save $3,175 AUD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,203 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551248081. Listed at 12 retailers as of November 4, 2026, with prices from $4,029 to $7,203, a $3,175 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,203. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle38.4°
OriginNatural
Grading LabGIA
CertificateGIA 6551248081
Dimensions11.26 × 5.48 × 3.32 mm
L/W Ratio2.05
Top View
11.26 mm5.48 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551248081
Side View
Table 58.0%Crown 39.8°Girdle: MED-THKPavilion 38.4°Culet: NoneDepth 60.5%

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: $4,704 AUD|Low: $4,029 AUD|High: $7,792 AUD|Avg: $5,183 AUD|-6.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 7, 2026
Retailer 6$4,029 AUD
Retailer 5$4,126 AUD
Retailer 7$4,344 AUD
Retailer 3$4,436 AUD
Retailer 1$4,704 AUD
Retailer 2$4,852 AUD
Retailer 8$5,167 AUD
Retailer 9$5,180 AUD
Retailer 10$5,302 AUD
Retailer 4$5,356 AUD
Wholesale Diamonds Direct$7,203 AUD

41 data points across 11 retailers

12 retailers$4,029 AUD to $7,203 AUD

A
Cheapest Retailer
-
$4,029 AUD
A
Retailer 2
-
$4,126 AUD
View
A
Retailer 3
-
$4,344 AUD
View
B+
Retailer 4
-
$4,436 AUD
View
A
Retailer 5
-
$4,704 AUD
View
B+
Retailer 6
-
$4,852 AUD
View
B+
Retailer 7
-
$5,167 AUD
View
B+
Retailer 8
-
$5,180 AUD
View
B+
Retailer 9
-
$5,302 AUD
View
B+
Retailer 10
-
$5,356 AUD
View
B
Retailer 11
-
$5,742 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
378733586 · Nov 6
$7,203 AUD
$4,949 USD
View
11 more retailers have this diamond
Prices start from $4,029 AUDSave up to $3,175 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
$4,029 AUD