CaratHunter
Plans
Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

ID • J/SI2 • GIA 05

Certificate GIA 05

Diamond specifications and retailer prices

From $4,481 AUD
As of November 4, 2026
Save $5,678 AUD (56%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $10,159 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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. Listed at 8 retailers as of November 4, 2026, with prices from $4,481 to $10,159, a $5,678 spread on the same certified stone. NZ Jewellers lists it at $10,159. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 05
Dimensions10.32 × 5.53 × 3.51 mm
L/W Ratio1.87
Top View
10.32 mm5.53 mm1.21 ctJ / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 05
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $10,159 AUD|Low: $4,481 AUD|High: $10,507 AUD|Avg: $6,045 AUD|-3.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 3$4,481 AUD
Retailer 8$4,644 AUD
Retailer 4$5,282 AUD
Retailer 7$5,464 AUD
Retailer 6$5,485 AUD
Retailer 5$5,583 AUD
Retailer 2$6,037 AUD
NZ Jewellers$10,159 AUD

10 data points across 8 retailers

8 retailers$4,481 AUD to $10,159 AUD

B+
Cheapest Retailer
-
$4,481 AUD
B
Retailer 2
-
$4,644 AUD
View
B
Retailer 3
-
$5,282 AUD
View
Retailer 4
-
$5,464 AUD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$5,485 AUD
View
B
Retailer 6
-
$5,583 AUD
View
B
Retailer 7
-
$6,037 AUD
View
Most Expensive
B
NZ Jewellers
04eec4f6-1c62-4a18-9070-3db39de9fa65 · Nov 5
$10,159 AUD
$6,980 USD
View
7 more retailers have this diamond
Prices start from $4,481 AUDSave up to $5,678 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.

B+
1.21ct Marquise
$4,481 AUD