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Marquise|Natural|GIA

1.00ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6551141394

Certificate GIA 6551141394

Diamond specifications and retailer prices

From $3,870 AUD
As of November 5, 2026
Save $611 AUD (14%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,181 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551141394. Listed at 18 retailers as of November 5, 2026, with a relatively tight 16% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551141394
Dimensions11.42 × 5.02 × 2.87 mm
L/W Ratio2.27
Top View
11.42 mm5.02 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551141394
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 57.3%

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 5
Current: $3,870 AUD|Low: $3,278 AUD|High: $7,590 AUD|Avg: $4,750 AUD|+0.2%
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 5, 2026
Retailer 14$3,278 AUD
Retailer 9$3,452 AUD
Retailer 1$3,870 AUD
Retailer 12$4,024 AUD
Retailer 13$4,052 AUD
Retailer 4$4,109 AUD
Retailer 5$4,481 AUD
Retailer 6$4,539 AUD
Retailer 2$4,598 AUD
Retailer 3$4,598 AUD
Retailer 8$4,603 AUD
Retailer 10$5,101 AUD
Retailer 11$7,382 AUD
Retailer 7$7,494 AUD

32 data points across 14 retailers

18 retailers$3,870 AUD to $4,481 AUD

Retailer 1
-
$3,278 AUD
Price last confirmed 15 days ago
Retailer 2
-
$3,452 AUD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$3,870 AUD
View
B+
Retailer 4
-
$4,109 AUD
View
Retailer 5
-
$4,391 AUD
View
Price last confirmed 21 days ago
Retailer 6
-
$4,391 AUD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$4,481 AUD
View
Retailer 8
-
$4,539 AUD
View
Price last confirmed 45 days ago
Retailer 9
-
$4,560 AUD
View
Price last confirmed 21 days ago
Retailer 10
-
$4,598 AUD
View
Price last confirmed 19 days ago
Retailer 11
-
$4,598 AUD
View
Price last confirmed 16 days ago
Retailer 12
-
$4,603 AUD
View
Price last confirmed 16 days ago
Retailer 13
-
$5,066 AUD
View
Price last confirmed 18 days ago
Retailer 14
-
$5,238 AUD
View
Price last confirmed 45 days ago
Retailer 15
-
$7,382 AUD
View
Price last confirmed 16 days ago
Retailer 16
-
$7,494 AUD
View
Price last confirmed 15 days ago
Retailer 17
-
$7,909 AUD
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
acc5bc18-4dfb-4497-ac9f-97afada2c82f · Oct 17
$9,181 AUD
$6,308 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $3,870 AUDSave up to $611 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
$3,870 AUD