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Marquise|Natural|GIA

1.20ct L SI2 Marquise Natural Diamond

ID • L/SI2 • GIA 6551582399

Certificate GIA 6551582399

Diamond specifications and retailer prices

From $3,649 AUD
As of November 6, 2026
3 retailers carry this diamond
Most expensive: $7,714 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded L 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 6551582399. Listed at 3 retailers as of November 6, 2026. 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

1.20
Carat
L
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551582399
Dimensions10.76 × 5.50 × 3.51 mm
L/W Ratio1.96
Girdle conditionFaceted
Top View
10.76 mm5.50 mm1.20 ctL / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551582399
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NDepth 63.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $3,182 AUD|Low: $2,738 AUD|High: $5,475 AUD|Avg: $3,833 AUD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
September 30, 2026
Retailer 2$2,738 AUD
Retailer 1$3,182 AUD
Retailer 7$3,371 AUD
Retailer 6$3,461 AUD
Retailer 3$3,493 AUD
Retailer 8$3,649 AUD
Retailer 5$4,513 AUD
Retailer 9$4,692 AUD
Retailer 4$5,437 AUD

8 data points across 9 retailers

3 retailers

Retailer 1
-
$2,738 AUD
Price last confirmed 38 days ago
B
Retailer 2
-
$3,649 AUD
View
Most Expensive
NZ Jewellers
6de9829d-1cca-404f-87e3-70bb85cab040 · Sep 30
$7,714 AUD
$5,300 USD
View
Price last confirmed 37 days ago
2 more retailers have this diamond
Prices start from $3,649 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
1.20ct Marquise
$3,649 AUD