CaratHunter
Plans
Marquise|Natural|GIA

1.03ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1558637331

Certificate GIA 1558637331

Diamond specifications and retailer prices

From $2,311 AUD
As of November 4, 2026
Save $3,756 AUD (62%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,067 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural marquise diamond

This 1.03ct 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 1558637331. Listed at 11 retailers as of November 4, 2026, with prices from $2,311 to $6,067, a $3,756 spread on the same certified stone. NZ Jewellers lists it at $6,067. 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

1.03
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558637331
Dimensions10.33 × 5.25 × 3.28 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
10.33 mm5.25 mm1.03 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558637331
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.5%

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 4
Current: $6,067 AUD|Low: $2,203 AUD|High: $6,305 AUD|Avg: $3,076 AUD|-3.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$2,311 AUD
Retailer 10$2,323 AUD
Retailer 9$2,487 AUD
Retailer 11$2,511 AUD
Retailer 2$2,544 AUD
Retailer 7$2,603 AUD
Retailer 4$2,664 AUD
Retailer 5$2,760 AUD
Retailer 8$2,870 AUD
Retailer 6$4,345 AUD
NZ Jewellers$6,067 AUD

35 data points across 11 retailers

11 retailers$2,311 AUD to $6,067 AUD

A
Cheapest Retailer
-
$2,311 AUD
A
Retailer 2
-
$2,323 AUD
View
A
Retailer 3
-
$2,487 AUD
View
Retailer 4
-
$2,511 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$2,544 AUD
View
A
Retailer 6
-
$2,603 AUD
View
A
Retailer 7
-
$2,664 AUD
View
A
Retailer 8
-
$2,760 AUD
View
A
Retailer 9
-
$2,870 AUD
View
B
Retailer 10
-
$4,345 AUD
View
Most Expensive
B
NZ Jewellers
517901f1-8871-46ff-b3a7-85dfedceebc3 · Nov 5
$6,067 AUD
$4,247 USD
View
10 more retailers have this diamond
Prices start from $2,311 AUDSave up to $3,756 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
1.03ct Marquise
$2,311 AUD