CaratHunter
Plans
Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 5553503515

Certificate GIA 5553503515

Diamond specifications and retailer prices

From $5,778 AUD
As of November 6, 2026
Save $2,212 AUD (28%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,637 AUD at NZ Jewellers · As of October 3, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5553503515. Listed at 14 retailers as of November 6, 2026, with a 38% 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553503515
Dimensions10.73 × 5.48 × 3.49 mm
L/W Ratio1.96
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle
Top View
10.73 mm5.48 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553503515
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.7%

Caratlytics Score

How it works →
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 6
Current: $11,637 AUD|Low: $4,502 AUD|High: $11,637 AUD|Avg: $6,808 AUD|+8.4%
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 9$4,502 AUD
Retailer 7$4,733 AUD
Retailer 12$4,844 AUD
Retailer 13$5,778 AUD
Retailer 11$5,865 AUD
Retailer 10$5,900 AUD
Retailer 19$5,960 AUD
Retailer 14$6,081 AUD
Retailer 8$6,162 AUD
Retailer 18$6,641 AUD
Retailer 3$6,768 AUD
Retailer 6$6,983 AUD
Retailer 17$7,268 AUD
Retailer 5$7,491 AUD
Retailer 2$7,655 AUD
Retailer 20$7,708 AUD
Retailer 16$7,728 AUD
Retailer 15$7,990 AUD
Retailer 4$10,766 AUD
NZ Jewellers$11,637 AUD

11 data points across 20 retailers

14 retailers$5,778 AUD to $7,990 AUD

Retailer 1
-
$4,844 AUD
Price last confirmed 64 days ago
B
Retailer 2
-
$5,778 AUD
View
B
Retailer 3
-
$5,900 AUD
View
Retailer 4
-
$5,960 AUD
View
Price last confirmed 34 days ago
B
Retailer 5
-
$6,081 AUD
View
Retailer 6
-
$6,162 AUD
View
Price last confirmed 46 days ago
Retailer 7
-
$6,768 AUD
View
Price last confirmed 34 days ago
B
Retailer 8
-
$7,268 AUD
View
B
Retailer 9
-
$7,655 AUD
View
Retailer 10
-
$7,708 AUD
View
Price last confirmed 34 days ago
B
Retailer 11
-
$7,728 AUD
View
B
Retailer 12
-
$7,990 AUD
View
Retailer 13
-
$10,766 AUD
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
111913c1-56d2-4cb3-b9a6-92b9e1da827b · Oct 3
$11,637 AUD
$7,996 USD
View
Price last confirmed 34 days ago
13 more retailers have this diamond
Prices start from $5,778 AUDSave up to $2,212 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
$5,778 AUD