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Marquise|Natural|GIA

1.00ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 2566212549

Certificate GIA 2566212549

Diamond specifications and retailer prices

From $1,763 AUD
As of November 6, 2026
Save $4,016 AUD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,778 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566212549. Listed at 15 retailers as of November 5, 2026, with prices from $1,763 to $5,778, a $4,016 spread on the same certified stone. NZ Jewellers lists it at $5,778. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2566212549
Dimensions11.25 × 5.13 × 2.99 mm
L/W Ratio2.19
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Cavity, Needle
Top View
11.25 mm5.13 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2566212549
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NDepth 58.3%

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 6
Current: $5,778 AUD|Low: $1,763 AUD|High: $5,855 AUD|Avg: $2,853 AUD|-1.3%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 2$1,763 AUD
Retailer 4$2,196 AUD
Retailer 3$2,370 AUD
Retailer 14$2,370 AUD
Retailer 8$2,423 AUD
Retailer 5$2,433 AUD
Retailer 15$2,478 AUD
Retailer 11$2,507 AUD
Retailer 6$2,564 AUD
Retailer 10$2,628 AUD
Retailer 13$2,667 AUD
Retailer 7$2,734 AUD
Retailer 9$3,218 AUD
Retailer 12$4,150 AUD
NZ Jewellers$5,778 AUD

24 data points across 15 retailers

15 retailers$1,763 AUD to $5,778 AUD

A
Cheapest Retailer
-
$1,763 AUD
A
Retailer 2
-
$2,196 AUD
View
Retailer 3
-
$2,370 AUD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$2,370 AUD
View
A
Retailer 5
-
$2,423 AUD
View
A
Retailer 6
-
$2,433 AUD
View
B+
Retailer 7
-
$2,478 AUD
View
A
Retailer 8
-
$2,507 AUD
View
A
Retailer 9
-
$2,564 AUD
View
B+
Retailer 10
-
$2,628 AUD
View
B+
Retailer 11
-
$2,667 AUD
View
B+
Retailer 12
-
$2,734 AUD
View
B+
Retailer 13
-
$3,218 AUD
View
B
Retailer 14
-
$4,150 AUD
View
Most Expensive
B
NZ Jewellers
8d72a1a1-e430-49cc-912d-d0342c4139db · Nov 5
$5,778 AUD
$4,045 USD
View
14 more retailers have this diamond
Prices start from $1,763 AUDSave up to $4,016 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
1.00ct Marquise
$1,763 AUD