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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1548811201

Certificate GIA 1548811201

Diamond specifications and retailer prices

From $3,813 AUD
As of November 4, 2026
Save $4,372 AUD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,185 AUD at NZ Jewellers · As of November 5, 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 1548811201. Listed at 20 retailers as of November 4, 2026, with prices from $3,813 to $8,185, a $4,372 spread on the same certified stone. NZ Jewellers lists it at $8,185. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1548811201
Dimensions10.08 × 5.19 × 3.14 mm
L/W Ratio1.94
Key to symbols
Feather, Cavity, Indented Natural
Top View
10.08 mm5.19 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1548811201
Side View
Table 58.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 60.5%

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 4
Current: $8,185 AUD|Low: $3,273 AUD|High: $8,185 AUD|Avg: $5,141 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
November 6, 2026
Retailer 3$3,813 AUD
Retailer 9$3,930 AUD
Retailer 5$4,162 AUD
Retailer 12$4,257 AUD
Retailer 13$4,257 AUD
Retailer 11$4,420 AUD
Retailer 6$4,861 AUD
Retailer 10$5,037 AUD
Retailer 2$5,146 AUD
Retailer 4$5,229 AUD
Retailer 7$5,734 AUD
Retailer 8$7,836 AUD
NZ Jewellers$8,185 AUD

45 data points across 13 retailers

20 retailers$3,813 AUD to $8,185 AUD

B+
Cheapest Retailer
-
$3,813 AUD
B
Retailer 2
-
$3,930 AUD
View
Final sale: no returns
B
Retailer 3
-
$3,998 AUD
View
B+
Retailer 4
-
$4,162 AUD
View
B
Retailer 5
-
$4,257 AUD
View
Retailer 6
-
$4,257 AUD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$4,420 AUD
View
Retailer 8
-
$4,685 AUD
View
Price last confirmed 67 days ago
B
Retailer 9
-
$4,846 AUD
View
B
Retailer 10
-
$4,846 AUD
View
B
Retailer 11
-
$4,861 AUD
View
B
Retailer 12
-
$4,912 AUD
View
B
Retailer 13
-
$5,007 AUD
View
Retailer 14
-
$5,037 AUD
View
Price last confirmed 34 days ago
B
Retailer 15
-
$5,146 AUD
View
B
Retailer 16
-
$5,229 AUD
View
Retailer 17
-
$5,450 AUD
View
Price last confirmed 15 days ago
B
Retailer 18
-
$5,734 AUD
View
B
Retailer 19
-
$7,836 AUD
View
Most Expensive
B
NZ Jewellers
f36cd918-2cfb-49aa-91f3-8c1954f56ac2 · Nov 5
$8,185 AUD
$5,624 USD
View
19 more retailers have this diamond
Prices start from $3,813 AUDSave up to $4,372 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
$3,813 AUD