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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 3545703504

Certificate GIA 3545703504

Diamond specifications and retailer prices

From $2,959 AUD
As of November 6, 2026
Save $4,136 AUD (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $8,756 AUD at NZ Jewellers · As of September 30, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 3545703504. Listed at 23 retailers as of November 4, 2026, with a 140% 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

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.8°
Pavilion angle40.28°
OriginNatural
Grading LabGIA
CertificateGIA 3545703504
Dimensions9.97 × 5.18 × 3.34 mm
L/W Ratio1.92
Top View
9.97 mm5.18 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3545703504
Side View
Table 57.0%Crown 40.8°Girdle: ThickPavilion 40.28°Culet: NoneDepth 64.5%

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 6
Current: $4,285 AUD|Low: $3,021 AUD|High: $7,114 AUD|Avg: $4,268 AUD|-2.3%
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
November 7, 2026
Retailer 8$3,021 AUD
Retailer 17$3,100 AUD
Retailer 2$3,323 AUD
Retailer 18$3,395 AUD
Retailer 16$3,646 AUD
Retailer 10$3,649 AUD
Retailer 6$3,794 AUD
Retailer 11$3,997 AUD
Retailer 13$4,202 AUD
Retailer 19$4,221 AUD
Retailer 20$4,221 AUD
Retailer 1$4,285 AUD
Retailer 4$4,352 AUD
Retailer 9$4,612 AUD
Retailer 3$4,631 AUD
Retailer 5$4,692 AUD
Retailer 15$4,734 AUD
Retailer 7$4,864 AUD
Retailer 12$4,956 AUD
Retailer 14$7,095 AUD

27 data points across 20 retailers

23 retailers$2,959 AUD to $7,095 AUD

B+
Cheapest Retailer
-
$2,959 AUD
B+
Retailer 2
-
$3,100 AUD
View
B+
Retailer 3
-
$3,323 AUD
View
B+
Retailer 4
-
$3,395 AUD
View
Final sale: no returns
B
Retailer 5
-
$3,646 AUD
View
Retailer 6
-
$3,794 AUD
View
Price last confirmed 46 days ago
Retailer 7
-
$3,794 AUD
View
Price last confirmed 26 days ago
Retailer 8
-
$3,794 AUD
View
Price last confirmed 30 days ago
Retailer 9
-
$3,940 AUD
View
Price last confirmed 37 days ago
B
Retailer 10
-
$4,221 AUD
View
B
Retailer 11
-
$4,221 AUD
View
B
Retailer 12
-
$4,285 AUD
View
B
Retailer 13
-
$4,352 AUD
View
Retailer 14
-
$4,378 AUD
View
Price last confirmed 46 days ago
Retailer 15
-
$4,378 AUD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$4,631 AUD
View
Retailer 17
-
$4,692 AUD
View
Price last confirmed 31 days ago
B
Retailer 18
-
$4,734 AUD
View
Retailer 19
-
$4,864 AUD
View
Price last confirmed 27 days ago
B
Retailer 20
-
$4,956 AUD
View
B
Retailer 21
-
$7,095 AUD
View
Retailer 22
-
$8,756 AUD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
b4ffd24d-39e2-4e52-a441-4501157ae2a7 · Sep 30
$8,756 AUD
$6,016 USD
View
Price last confirmed 37 days ago
22 more retailers have this diamond
Prices start from $2,959 AUDSave up to $4,136 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+
1.00ct Marquise
$2,959 AUD