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Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

VG • J/SI2 • GIA 6233870363

Certificate GIA 6233870363

Diamond specifications and retailer prices

From $4,595 AUD
As of November 5, 2026
Save $5,156 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,507 AUD at NZ Jewellers · As of October 21, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6233870363. Listed at 17 retailers as of November 2, 2026, with a 112% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle40.57°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 6233870363
Dimensions10.32 × 5.53 × 3.51 mm
L/W Ratio1.87
Top View
10.32 mm5.53 mm1.21 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6233870363
Side View
Table 62.0%Crown 40.57°Girdle: STK-VTKPavilion 39.78°Culet: NoneDepth 63.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,906 AUD|Low: $4,595 AUD|High: $10,205 AUD|Avg: $6,356 AUD|-1.6%
Retailer 1
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
November 7, 2026
Retailer 10$4,595 AUD
Retailer 12$4,689 AUD
Retailer 7$4,829 AUD
Retailer 3$5,132 AUD
Retailer 8$5,286 AUD
Retailer 5$5,464 AUD
Retailer 4$5,673 AUD
Retailer 1$5,906 AUD
Retailer 2$5,909 AUD
Retailer 13$5,909 AUD
Retailer 14$6,098 AUD
Retailer 9$6,568 AUD
Retailer 6$6,824 AUD
Retailer 11$9,751 AUD

43 data points across 14 retailers

17 retailers$4,595 AUD to $9,751 AUD

B
Cheapest Retailer
-
$4,595 AUD
B
Retailer 2
-
$4,689 AUD
View
B
Retailer 3
-
$4,829 AUD
View
Final sale: no returns
B
Retailer 4
-
$5,132 AUD
View
B
Retailer 5
-
$5,286 AUD
View
Retailer 6
-
$5,464 AUD
View
Price last confirmed 22 days ago
Retailer 7
-
$5,464 AUD
View
Price last confirmed 18 days ago
Retailer 8
-
$5,673 AUD
View
Price last confirmed 21 days ago
B
Retailer 9
-
$5,906 AUD
View
B
Retailer 10
-
$5,909 AUD
View
B
Retailer 11
-
$5,909 AUD
View
B
Retailer 12
-
$6,098 AUD
View
Retailer 13
-
$6,303 AUD
View
Price last confirmed 17 days ago
B
Retailer 14
-
$6,568 AUD
View
Retailer 15
-
$6,824 AUD
View
Price last confirmed 23 days ago
B
Retailer 16
-
$9,751 AUD
View
Most Expensive
NZ Jewellers
0ce88f21-bf3e-4418-afd3-6386eb3e129f · Oct 21
$10,507 AUD
$7,219 USD
View
Price last confirmed 17 days ago
16 more retailers have this diamond
Prices start from $4,595 AUDSave up to $5,156 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
$4,595 AUD