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Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 2567109603

Certificate GIA 2567109603

Diamond specifications and retailer prices

From $3,694 AUD
As of November 6, 2026
Save $3,278 AUD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,971 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 J 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 2567109603. Listed at 12 retailers as of November 6, 2026, with prices from $3,694 to $6,971, a $3,278 spread on the same certified stone. Helzberg Diamonds lists it at $6,971. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.5°
Pavilion angle40.3°
OriginNatural
Grading LabGIA
CertificateGIA 2567109603
Dimensions10.51 × 5.54 × 3.55 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.51 mm5.54 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2567109603
Side View
Table 58.0%Crown 39.5°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 64.0%

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 6
Current: $6,971 AUD|Low: $3,694 AUD|High: $7,257 AUD|Avg: $4,891 AUD|-3.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 5$3,694 AUD
Retailer 8$3,753 AUD
Retailer 10$3,986 AUD
Retailer 9$4,055 AUD
Retailer 2$4,320 AUD
Retailer 3$4,413 AUD
Retailer 11$4,736 AUD
Retailer 7$4,873 AUD
Retailer 12$4,883 AUD
Retailer 6$5,087 AUD
Retailer 4$6,551 AUD
Helzberg Diamonds$6,971 AUD

34 data points across 12 retailers

12 retailers$3,694 AUD to $6,971 AUD

A
Cheapest Retailer
-
$3,694 AUD
B+
Retailer 2
-
$3,753 AUD
View
B+
Retailer 3
-
$3,986 AUD
View
B+
Retailer 4
-
$4,055 AUD
View
B+
Retailer 5
-
$4,320 AUD
View
B+
Retailer 6
-
$4,413 AUD
View
B
Retailer 7
-
$4,736 AUD
View
B
Retailer 8
-
$4,873 AUD
View
B
Retailer 9
-
$4,883 AUD
View
B+
Retailer 10
-
$5,087 AUD
View
B
Retailer 11
-
$6,551 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRILMNHGPMGJ · Nov 6
$6,971 AUD
$4,790 USD
View
11 more retailers have this diamond
Prices start from $3,694 AUDSave up to $3,278 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
$3,694 AUD