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Marquise|Natural|GIA

1.20ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1553278138

Certificate GIA 1553278138

Diamond specifications and retailer prices

From $6,175 AUD
As of November 5, 2026
Save $6,896 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,071 AUD at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553278138. Listed at 17 retailers as of November 5, 2026, with prices from $6,175 to $13,071, a $6,896 spread on the same certified stone. NZ Jewellers lists it at $13,071. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553278138
Dimensions10.90 × 5.60 × 3.49 mm
L/W Ratio1.95
Top View
10.90 mm5.60 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553278138
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.3%

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 5
Current: $13,071 AUD|Low: $6,175 AUD|High: $13,071 AUD|Avg: $8,036 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 7, 2026
Retailer 4$6,175 AUD
Retailer 13$6,280 AUD
Retailer 18$6,382 AUD
Retailer 8$6,590 AUD
Retailer 3$7,081 AUD
Retailer 14$7,081 AUD
Retailer 17$7,081 AUD
Retailer 16$7,457 AUD
Retailer 2$7,551 AUD
Retailer 15$7,820 AUD
Retailer 6$7,946 AUD
Retailer 7$7,946 AUD
Retailer 5$8,169 AUD
Retailer 9$8,208 AUD
Retailer 11$8,303 AUD
Retailer 10$8,625 AUD
Retailer 12$12,447 AUD
NZ Jewellers$13,071 AUD

45 data points across 18 retailers

17 retailers$6,175 AUD to $13,071 AUD

B+
Cheapest Retailer
-
$6,175 AUD
B+
Retailer 2
-
$6,280 AUD
View
B+
Retailer 3
-
$6,382 AUD
View
B+
Retailer 4
-
$6,590 AUD
View
B
Retailer 5
-
$7,081 AUD
View
B
Retailer 6
-
$7,081 AUD
View
Retailer 7
-
$7,081 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$7,457 AUD
View
B
Retailer 9
-
$7,551 AUD
View
B
Retailer 10
-
$7,946 AUD
View
B
Retailer 11
-
$7,946 AUD
View
B
Retailer 12
-
$8,169 AUD
View
B
Retailer 13
-
$8,208 AUD
View
B
Retailer 14
-
$8,303 AUD
View
Retailer 15
-
$8,625 AUD
View
Price last confirmed 15 days ago
B
Retailer 16
-
$12,447 AUD
View
Most Expensive
B
NZ Jewellers
fe52145a-d837-4405-9907-45c204f4f43f · Nov 5
$13,071 AUD
$8,981 USD
View
16 more retailers have this diamond
Prices start from $6,175 AUDSave up to $6,896 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
$6,175 AUD