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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 5553457339

Certificate GIA 5553457339

Diamond specifications and retailer prices

From $2,735 AUD
As of November 6, 2026
Save $3,374 AUD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,692 AUD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553457339. Listed at 22 retailers as of November 2, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553457339
Dimensions10.58 × 5.04 × 3.13 mm
L/W Ratio2.10
Girdle conditionThick to Very Thick
Key to symbols
Feather, Pinpoint, Needle, Indented Natural
Top View
10.58 mm5.04 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553457339
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.0%

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: $4,488 AUD|Low: $2,384 AUD|High: $6,108 AUD|Avg: $3,494 AUD
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 6, 2026
Retailer 16$2,384 AUD
Retailer 13$2,474 AUD
Retailer 12$2,735 AUD
Retailer 8$2,853 AUD
Retailer 5$2,915 AUD
Retailer 22$2,968 AUD
Retailer 15$2,970 AUD
Retailer 3$2,973 AUD
Retailer 18$3,080 AUD
Retailer 4$3,187 AUD
Retailer 9$3,238 AUD
Retailer 17$3,339 AUD
Retailer 14$3,349 AUD
Retailer 24$3,419 AUD
Retailer 10$3,560 AUD
Retailer 6$3,653 AUD
Retailer 7$3,653 AUD
Retailer 21$3,688 AUD
Retailer 11$3,769 AUD
Retailer 19$4,059 AUD
Retailer 20$4,256 AUD
Retailer 1$4,488 AUD
Retailer 23$5,014 AUD
Retailer 2$6,108 AUD

32 data points across 24 retailers

22 retailers$2,735 AUD to $6,108 AUD

Retailer 1
-
$2,384 AUD
Price last confirmed 21 days ago
A
Retailer 2
-
$2,735 AUD
View
B+
Retailer 3
-
$2,853 AUD
View
B+
Retailer 4
-
$2,915 AUD
View
Final sale: no returns
B+
Retailer 5
-
$2,968 AUD
View
B+
Retailer 6
-
$2,973 AUD
View
B+
Retailer 7
-
$3,080 AUD
View
B+
Retailer 8
-
$3,187 AUD
View
Retailer 9
-
$3,200 AUD
View
Price last confirmed 30 days ago
B+
Retailer 10
-
$3,238 AUD
View
B+
Retailer 11
-
$3,419 AUD
View
B+
Retailer 12
-
$3,560 AUD
View
B+
Retailer 13
-
$3,653 AUD
View
B+
Retailer 14
-
$3,653 AUD
View
B+
Retailer 15
-
$3,688 AUD
View
B
Retailer 16
-
$3,769 AUD
View
B
Retailer 17
-
$4,059 AUD
View
B
Retailer 18
-
$4,256 AUD
View
B
Retailer 19
-
$4,488 AUD
View
B
Retailer 20
-
$5,014 AUD
View
B
Retailer 21
-
$6,108 AUD
View
Most Expensive
NZ Jewellers
d5056980-58bb-42a3-a1f3-9b25bfcf425e · Sep 29
$6,692 AUD
$4,598 USD
View
Price last confirmed 38 days ago
21 more retailers have this diamond
Prices start from $2,735 AUDSave up to $3,374 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
1.00ct Marquise
$2,735 AUD