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Marquise|Natural|GIA

1.01ct I SI1 Marquise Natural Diamond

ID • I/SI1 • GIA 1559004511

Certificate GIA 1559004511

Diamond specifications and retailer prices

From $2,770 AUD
As of November 2, 2026
Save $4,158 AUD (60%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,928 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct natural marquise sits in the classic one-carat band, graded I 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 1559004511. Listed at 8 retailers as of November 2, 2026, with prices from $2,770 to $6,928, a $4,158 spread on the same certified stone. NZ Jewellers lists it at $6,928. 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

1.01
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle42.17°
Pavilion angle40.84°
OriginNatural
Grading LabGIA
CertificateGIA 1559004511
Dimensions9.13 × 5.13 × 3.48 mm
L/W Ratio1.78
Girdle conditionVery Thick
Key to symbols
Crystal, Feather
Top View
9.13 mm5.13 mm1.01 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1559004511
Side View
Table 61.0%Crown 42.17°Girdle: Very ThickPavilion 40.84°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,928 AUD|Low: $2,770 AUD|High: $7,000 AUD|Avg: $3,779 AUD|+9.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 2$2,770 AUD
Retailer 7$2,840 AUD
Retailer 4$2,893 AUD
Retailer 5$2,971 AUD
Retailer 6$3,033 AUD
Retailer 9$3,071 AUD
Retailer 8$3,644 AUD
Retailer 3$4,975 AUD
NZ Jewellers$6,928 AUD

36 data points across 9 retailers

8 retailers$2,770 AUD to $6,928 AUD

A
Cheapest Retailer
-
$2,770 AUD
A
Retailer 2
-
$2,840 AUD
View
A
Retailer 3
-
$2,893 AUD
View
A
Retailer 4
-
$2,971 AUD
View
A
Retailer 5
-
$3,033 AUD
View
Retailer 6
-
$3,644 AUD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$4,975 AUD
View
Most Expensive
B
NZ Jewellers
52a5c3ca-3245-41f7-813a-018c244f3885 · Nov 3
$6,928 AUD
$4,850 USD
View
7 more retailers have this diamond
Prices start from $2,770 AUDSave up to $4,158 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.

A
1.01ct Marquise
$2,770 AUD