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Marquise|Natural|GIA

1.02ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 3565590413

Certificate GIA 3565590413

Diamond specifications and retailer prices

From $3,540 AUD
$2,481 USD
As of November 1, 2026
Save $2,855 AUD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,395 AUD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.02ct natural marquise diamond

This 1.02ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3565590413. Listed at 12 retailers as of November 1, 2026, with prices from $3,540 to $6,395, a $2,855 spread on the same certified stone. Helzberg Diamonds lists it at $6,395. 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

1.02
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle38.17°
OriginNatural
Grading LabGIA
CertificateGIA 3565590413
Dimensions10.96 × 5.24 × 3.04 mm
L/W Ratio2.09
Culet sizeNone
Top View
10.96 mm5.24 mm1.02 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3565590413
Side View
Table 59.0%Crown 35.6°Girdle: STK-THKPavilion 38.17°Culet: NDepth 58.0%

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: $6,395 AUD|Low: $3,540 AUD|High: $6,395 AUD|Avg: $4,437 AUD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4$3,540 AUD
Retailer 8$3,656 AUD
Retailer 9$3,691 AUD
Retailer 7$3,719 AUD
Retailer 5$3,982 AUD
Retailer 12$4,050 AUD
Retailer 10$4,395 AUD
Retailer 11$4,520 AUD
Retailer 6$4,665 AUD
Retailer 2$4,788 AUD
Retailer 3$6,007 AUD
Helzberg Diamonds$6,395 AUD

8 data points across 12 retailers

12 retailers$3,540 AUD to $6,395 AUD

A
Cheapest Retailer
-
$3,540 AUD
$2,481 USD
A
Retailer 2
-
$3,656 AUD
$2,562 USD
View
B+
Retailer 3
-
$3,691 AUD
$2,587 USD
View
B+
Retailer 4
-
$3,719 AUD
$2,606 USD
View
B+
Retailer 5
-
$3,982 AUD
£2,197 GBP
View
B+
Retailer 6
-
$4,050 AUD
SGD 3,836 SGD
View
B+
Retailer 7
-
$4,395 AUD
$3,080 USD
View
B+
Retailer 8
-
$4,520 AUD
$3,168 USD
View
B+
Retailer 9
-
$4,665 AUD
$3,269 USD
View
B
Retailer 10
-
$4,788 AUD
€3,196 EUR
View
Retailer 11
-
$6,007 AUD
$4,210 USD
View
Price last confirmed 17 days ago
Most Expensive
B
Helzberg Diamonds
XZRJLMLLPGKHJ · Nov 1
$6,395 AUD
$4,482 USD
View
11 more retailers have this diamond
Prices start from $3,540 AUDSave up to $2,855 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
1.02ct Marquise
$3,540 AUD