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Marquise|Natural|GIA

1.30ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 7551663028

Certificate GIA 7551663028

Diamond specifications and retailer prices

From $5,147 AUD
As of November 6, 2026
Save $5,384 AUD (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,531 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551663028. Listed at 11 retailers as of November 5, 2026, with prices from $5,147 to $10,531, a $5,384 spread on the same certified stone. NZ Jewellers lists it at $10,531. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551663028
Dimensions11.05 × 5.68 × 3.57 mm
L/W Ratio1.95
Culet sizeNone
Top View
11.05 mm5.68 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551663028
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.9%

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 6
Current: $10,531 AUD|Low: $4,208 AUD|High: $10,531 AUD|Avg: $6,687 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4$4,208 AUD
Retailer 12$5,147 AUD
Retailer 10$5,415 AUD
Retailer 3$5,731 AUD
Retailer 11$5,890 AUD
Retailer 8$6,017 AUD
Retailer 9$6,017 AUD
Retailer 5$6,181 AUD
Retailer 2$6,477 AUD
Retailer 7$8,824 AUD
Retailer 6$10,081 AUD
NZ Jewellers$10,531 AUD

28 data points across 12 retailers

11 retailers$5,147 AUD to $10,531 AUD

B+
Cheapest Retailer
-
$5,147 AUD
B+
Retailer 2
-
$5,415 AUD
View
B+
Retailer 3
-
$5,731 AUD
View
B+
Retailer 4
-
$5,890 AUD
View
B+
Retailer 5
-
$6,017 AUD
View
B+
Retailer 6
-
$6,017 AUD
View
B+
Retailer 7
-
$6,181 AUD
View
B+
Retailer 8
-
$6,477 AUD
View
B
Retailer 9
-
$8,824 AUD
View
B
Retailer 10
-
$10,081 AUD
View
Most Expensive
B
NZ Jewellers
d59c58bd-2a71-439a-88d1-f0f399ee09e3 · Nov 5
$10,531 AUD
$7,372 USD
View
10 more retailers have this diamond
Prices start from $5,147 AUDSave up to $5,384 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+
1.30ct Marquise
$5,147 AUD