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Marquise|Natural|GIA

1.20ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 5546487393

Certificate GIA 5546487393

Diamond specifications and retailer prices

From $3,199 AUD
As of November 6, 2026
Save $3,746 AUD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,708 AUD at NZ Jewellers · As of October 17, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546487393. Listed at 21 retailers as of November 4, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.92°
Pavilion angle40.26°
OriginNatural
Grading LabGIA
CertificateGIA 5546487393
Dimensions9.88 × 5.42 × 3.67 mm
L/W Ratio1.82
Top View
9.88 mm5.42 mm1.20 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546487393
Side View
Table 57.0%Crown 43.92°Girdle: THK-VTKPavilion 40.26°Culet: NoneDepth 67.7%

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: $3,272 AUD|Low: $3,199 AUD|High: $7,049 AUD|Avg: $4,790 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$3,199 AUD
Retailer 1$3,272 AUD
Retailer 9$3,560 AUD
Retailer 7$4,139 AUD
Retailer 2$4,260 AUD
Retailer 4$4,408 AUD
Retailer 3$4,860 AUD
Retailer 8$6,001 AUD
Retailer 5$6,945 AUD

33 data points across 9 retailers

21 retailers$3,199 AUD to $6,945 AUD

B+
Cheapest Retailer
-
$3,199 AUD
B+
Retailer 2
-
$3,260 AUD
View
B+
Retailer 3
-
$3,272 AUD
View
B+
Retailer 4
-
$3,379 AUD
View
B+
Retailer 5
-
$3,393 AUD
View
B+
Retailer 6
-
$3,560 AUD
View
Retailer 7
-
$3,774 AUD
View
Price last confirmed 17 days ago
Retailer 8
-
$3,774 AUD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$3,831 AUD
View
Retailer 10
-
$3,947 AUD
View
Price last confirmed 20 days ago
Retailer 11
-
$3,985 AUD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$3,989 AUD
View
B
Retailer 13
-
$4,139 AUD
View
B
Retailer 14
-
$4,260 AUD
View
Retailer 15
-
$4,353 AUD
View
Price last confirmed 61 days ago
Retailer 16
-
$4,353 AUD
View
Price last confirmed 18 days ago
B
Retailer 17
-
$4,408 AUD
View
B
Retailer 18
-
$4,860 AUD
View
C
Retailer 19
-
$6,001 AUD
View
C
Retailer 20
-
$6,945 AUD
View
Most Expensive
NZ Jewellers
77822477-ffa7-4578-b21a-8a10f4543e59 · Oct 17
$8,708 AUD
$5,983 USD
View
Price last confirmed 19 days ago
20 more retailers have this diamond
Prices start from $3,199 AUDSave up to $3,746 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
$3,199 AUD