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Marquise|Natural|GIA

1.00ct H SI2 Marquise Natural Diamond

GD • H/SI2 • GIA 6555405344

Certificate GIA 6555405344

Diamond specifications and retailer prices

From $3,627 AUD
As of November 4, 2026
Save $4,943 AUD (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,569 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555405344. Listed at 14 retailers as of November 4, 2026, with prices from $3,627 to $8,569, a $4,943 spread on the same certified stone. NZ Jewellers lists it at $8,569. 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
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555405344
Dimensions10.26 × 5.03 × 3.21 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Natural
Top View
10.26 mm5.03 mm1.00 ctH / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555405344
Side View
Table 67.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 63.9%

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 4
Current: $4,030 AUD|Low: $3,248 AUD|High: $7,267 AUD|Avg: $4,454 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$3,627 AUD
Retailer 7$3,671 AUD
Retailer 5$3,727 AUD
Retailer 6$3,783 AUD
Retailer 1$4,030 AUD
Retailer 9$4,257 AUD
Retailer 2$4,312 AUD
Retailer 3$4,778 AUD
Retailer 4$7,182 AUD

42 data points across 9 retailers

14 retailers$3,627 AUD to $8,569 AUD

B+
Cheapest Retailer
-
$3,627 AUD
B+
Retailer 2
-
$3,671 AUD
View
B+
Retailer 3
-
$3,727 AUD
View
B+
Retailer 4
-
$3,783 AUD
View
Final sale: no returns
B+
Retailer 5
-
$4,030 AUD
View
B+
Retailer 6
-
$4,100 AUD
View
Retailer 7
-
$4,100 AUD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$4,257 AUD
View
B
Retailer 9
-
$4,305 AUD
View
B+
Retailer 10
-
$4,312 AUD
View
B
Retailer 11
-
$4,730 AUD
View
B
Retailer 12
-
$4,778 AUD
View
B
Retailer 13
-
$7,182 AUD
View
Most Expensive
C
NZ Jewellers
b702e101-71db-41e8-8975-bd4a8ae54ef1 · Nov 5
$8,569 AUD
$5,888 USD
View
13 more retailers have this diamond
Prices start from $3,627 AUDSave up to $4,943 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
$3,627 AUD