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Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 6555349689

Certificate GIA 6555349689

Diamond specifications and retailer prices

From $6,126 AUD
As of November 6, 2026
Save $6,957 AUD (53%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $13,738 AUD at NZ Jewellers · As of October 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555349689. Listed at 28 retailers as of November 1, 2026, with a 114% 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.45°
Pavilion angle40.67°
OriginNatural
Grading LabGIA
CertificateGIA 6555349689
Dimensions10.16 × 5.45 × 3.58 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.16 mm5.45 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555349689
Side View
Table 60.0%Crown 40.45°Girdle: VTN-VTKPavilion 40.67°Culet: NoneDepth 65.7%

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: $13,738 AUD|Low: $4,950 AUD|High: $13,738 AUD|Avg: $7,762 AUD
NZ Jewellers
Retailer 2
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Retailer 29
November 3, 2026
Retailer 21$5,417 AUD
Retailer 20$5,710 AUD
Retailer 4$6,273 AUD
Retailer 9$6,417 AUD
Retailer 3$6,488 AUD
Retailer 16$6,490 AUD
Retailer 12$6,568 AUD
Retailer 11$6,867 AUD
Retailer 15$6,993 AUD
Retailer 10$7,367 AUD
Retailer 13$7,441 AUD
Retailer 26$7,441 AUD
Retailer 29$7,441 AUD
Retailer 19$7,698 AUD
Retailer 7$7,719 AUD
Retailer 22$7,741 AUD
Retailer 23$8,011 AUD
Retailer 2$8,012 AUD
Retailer 8$8,238 AUD
Retailer 18$8,238 AUD
Retailer 5$8,256 AUD
Retailer 14$8,428 AUD
Retailer 17$8,514 AUD
Retailer 28$8,585 AUD
Retailer 24$8,767 AUD
Retailer 27$10,096 AUD
Retailer 6$11,895 AUD
Retailer 25$13,083 AUD
NZ Jewellers$13,738 AUD

28 data points across 29 retailers

28 retailers$6,126 AUD to $13,083 AUD

Retailer 1
-
$6,069 AUD
Price last confirmed 31 days ago
B
Retailer 2
-
$6,126 AUD
View
B+
Retailer 3
-
$6,273 AUD
View
B
Retailer 4
-
$6,417 AUD
View
B
Retailer 5
-
$6,488 AUD
View
B
Retailer 6
-
$6,490 AUD
View
B
Retailer 7
-
$6,568 AUD
View
B
Retailer 8
-
$6,768 AUD
View
B
Retailer 9
-
$6,993 AUD
View
B
Retailer 10
-
$7,367 AUD
View
B
Retailer 11
-
$7,441 AUD
View
Retailer 12
-
$7,441 AUD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$7,441 AUD
View
Retailer 14
-
$7,698 AUD
View
Price last confirmed 23 days ago
B
Retailer 15
-
$7,719 AUD
View
B
Retailer 16
-
$8,011 AUD
View
B
Retailer 17
-
$8,012 AUD
View
B
Retailer 18
-
$8,238 AUD
View
B
Retailer 19
-
$8,238 AUD
View
Retailer 20
-
$8,256 AUD
View
Price last confirmed 20 days ago
B
Retailer 21
-
$8,428 AUD
View
B
Retailer 22
-
$8,514 AUD
View
B
Retailer 23
-
$8,585 AUD
View
B
Retailer 24
-
$8,767 AUD
View
B
Retailer 25
-
$10,096 AUD
View
Retailer 26
-
$11,895 AUD
View
Price last confirmed 11 days ago
B
Retailer 27
-
$13,083 AUD
View
Most Expensive
NZ Jewellers
89af7956-ae5e-4b27-b12a-bb96dfb8765d · Oct 30
$13,738 AUD
$9,439 USD
View
Price last confirmed 7 days ago
27 more retailers have this diamond
Prices start from $6,126 AUDSave up to $6,957 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
$6,126 AUD