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Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1549818428

Certificate GIA 1549818428

Diamond specifications and retailer prices

From $4,883 AUD
As of November 1, 2026
Save $5,362 AUD (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,673 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 G 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 1549818428. Listed at 17 retailers as of November 1, 2026, with a 110% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549818428
Dimensions10.01 × 5.23 × 3.24 mm
L/W Ratio1.91
Key to symbols
Feather, Cloud, Crystal, Indented Natural, Natural
Top View
10.01 mm5.23 mm1.00 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1549818428
Side View
Table 58.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 61.9%

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 1
Current: $6,206 AUD|Low: $4,883 AUD|High: $10,368 AUD|Avg: $6,508 AUD|-0.1%
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 4, 2026
Retailer 13$4,883 AUD
Retailer 12$5,214 AUD
Retailer 11$5,305 AUD
Retailer 5$5,550 AUD
Retailer 7$5,975 AUD
Retailer 1$6,206 AUD
Retailer 3$6,272 AUD
Retailer 4$6,272 AUD
Retailer 2$6,472 AUD
Retailer 14$6,574 AUD
Retailer 8$6,930 AUD
Retailer 6$6,932 AUD
Retailer 10$7,530 AUD
Retailer 9$10,245 AUD

21 data points across 14 retailers

17 retailers$4,883 AUD to $10,245 AUD

B+
Cheapest Retailer
-
$4,883 AUD
B+
Retailer 2
-
$5,214 AUD
View
B+
Retailer 3
-
$5,305 AUD
View
Retailer 4
-
$5,550 AUD
View
Price last confirmed 34 days ago
Retailer 5
-
$5,763 AUD
View
Price last confirmed 34 days ago
B+
Retailer 6
-
$5,975 AUD
View
B+
Retailer 7
-
$6,206 AUD
View
B
Retailer 8
-
$6,272 AUD
View
B
Retailer 9
-
$6,272 AUD
View
Retailer 10
-
$6,405 AUD
View
Price last confirmed 36 days ago
B
Retailer 11
-
$6,472 AUD
View
Retailer 12
-
$6,574 AUD
View
Price last confirmed 32 days ago
B
Retailer 13
-
$6,930 AUD
View
Retailer 14
-
$6,932 AUD
View
Price last confirmed 12 days ago
B
Retailer 15
-
$7,530 AUD
View
B
Retailer 16
-
$10,245 AUD
View
Most Expensive
NZ Jewellers
814ae926-9ab3-4cd7-8ec7-86528d4e2e8f · Sep 29
$10,673 AUD
$7,454 USD
View
Price last confirmed 35 days ago
16 more retailers have this diamond
Prices start from $4,883 AUDSave up to $5,362 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
$4,883 AUD