CaratHunter
Plans
Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 6555372918

Certificate GIA 6555372918

Diamond specifications and retailer prices

From $3,813 AUD
As of November 5, 2026
Save $4,375 AUD (53%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,188 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 6555372918. Listed at 13 retailers as of November 5, 2026, with prices from $3,813 to $8,188, a $4,375 spread on the same certified stone. NZ Jewellers lists it at $8,188. 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
SymmetryExcellent
FluorescenceStrong
Crown angle41.16°
Pavilion angle40.57°
OriginNatural
Grading LabGIA
CertificateGIA 6555372918
Dimensions10.55 × 5.49 × 3.51 mm
L/W Ratio1.92
Culet sizeNone
Top View
10.55 mm5.49 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6555372918
Side View
Table 57.0%Crown 41.16°Girdle: STK-VTKPavilion 40.57°Culet: NoneDepth 63.9%

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 5
Current: $8,188 AUD|Low: $3,052 AUD|High: $8,188 AUD|Avg: $4,001 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 5$3,052 AUD
Retailer 6$3,315 AUD
Retailer 3$3,537 AUD
Retailer 10$3,813 AUD
Retailer 16$4,043 AUD
Retailer 12$4,107 AUD
Retailer 7$4,244 AUD
Retailer 13$4,257 AUD
Retailer 8$4,346 AUD
Retailer 11$4,679 AUD
Retailer 2$4,797 AUD
Retailer 14$4,810 AUD
Retailer 9$4,862 AUD
Retailer 4$5,287 AUD
Retailer 15$6,066 AUD
NZ Jewellers$8,188 AUD

31 data points across 16 retailers

13 retailers$3,813 AUD to $8,188 AUD

Retailer 1
-
$3,315 AUD
Price last confirmed 21 days ago
Retailer 2
-
$3,537 AUD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
$3,813 AUD
View
B+
Retailer 4
-
$4,107 AUD
View
B+
Retailer 5
-
$4,226 AUD
View
B+
Retailer 6
-
$4,257 AUD
View
B
Retailer 7
-
$4,679 AUD
View
B
Retailer 8
-
$4,797 AUD
View
B
Retailer 9
-
$4,810 AUD
View
B
Retailer 10
-
$4,862 AUD
View
Retailer 11
-
$5,287 AUD
View
Price last confirmed 19 days ago
B
Retailer 12
-
$6,066 AUD
View
Most Expensive
C
NZ Jewellers
bb823756-70fd-443a-9a0a-294775cc99d0 · Nov 5
$8,188 AUD
$5,626 USD
View
12 more retailers have this diamond
Prices start from $3,813 AUDSave up to $4,375 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
$3,813 AUD