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Marquise|Natural|GIA

1.30ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551891799

Certificate GIA 6551891799

Diamond specifications and retailer prices

From $8,950 AUD
As of November 1, 2026
Save $7,033 AUD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $19,233 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.3ct natural marquise diamond

This 1.3ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551891799. Listed at 13 retailers as of November 1, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.30
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551891799
Dimensions10.88 × 5.73 × 3.66 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Top View
10.88 mm5.73 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551891799
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.9%

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 1
Current: $11,825 AUD|Low: $8,950 AUD|High: $16,218 AUD|Avg: $12,109 AUD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$8,950 AUD
Retailer 3$10,739 AUD
Retailer 6$11,018 AUD
Retailer 8$11,514 AUD
Retailer 9$11,514 AUD
Retailer 1$11,825 AUD
Retailer 10$11,899 AUD
Retailer 2$12,668 AUD
Retailer 4$14,029 AUD
Retailer 5$15,982 AUD

32 data points across 10 retailers

13 retailers$8,950 AUD to $15,982 AUD

A
Cheapest Retailer
-
$8,950 AUD
Retailer 2
-
$10,418 AUD
View
Price last confirmed 45 days ago
B+
Retailer 3
-
$10,739 AUD
View
Retailer 4
-
$11,018 AUD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$11,514 AUD
View
B+
Retailer 6
-
$11,514 AUD
View
B+
Retailer 7
-
$11,825 AUD
View
B+
Retailer 8
-
$11,899 AUD
View
Retailer 9
-
$12,021 AUD
View
Price last confirmed 43 days ago
Retailer 10
-
$12,668 AUD
View
Price last confirmed 14 days ago
B+
Retailer 11
-
$14,029 AUD
View
B
Retailer 12
-
$15,982 AUD
View
Most Expensive
NZ Jewellers
c10a64fd-b190-4958-b15c-cc64b9bcd4a7 · Sep 25
$19,233 AUD
$13,464 USD
View
Price last confirmed 42 days ago
12 more retailers have this diamond
Prices start from $8,950 AUDSave up to $7,033 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
1.30ct Marquise
$8,950 AUD