Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 5553615756

Certificate GIA 5553615756

Diamond specifications and retailer prices

From $5,902 AUD
$4,136 USD
As of November 1, 2026
Save $5,997 AUD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,494 AUD at NZ Jewellers · As of October 21, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5553615756. Listed at 17 retailers as of November 1, 2026, with a 102% 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
G
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.11°
Pavilion angle37.6°
OriginNatural
Grading LabGIA
CertificateGIA 5553615756
Dimensions9.95 × 5.46 × 3.43 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.95 mm5.46 mm1.20 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553615756
Side View
Table 61.0%Crown 43.11°Girdle: STK-VTKPavilion 37.6°Culet: NoneDepth 62.9%

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 1
Current: $12,494 AUD|Low: $5,471 AUD|High: $12,494 AUD|Avg: $7,738 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
November 2, 2026
Retailer 4$5,471 AUD
Retailer 6$5,492 AUD
Retailer 15$5,902 AUD
Retailer 11$6,247 AUD
Retailer 7$6,502 AUD
Retailer 2$7,386 AUD
Retailer 9$7,457 AUD
Retailer 13$7,591 AUD
Retailer 14$7,591 AUD
Retailer 5$7,809 AUD
Retailer 12$7,848 AUD
Retailer 3$8,245 AUD
Retailer 8$8,452 AUD
Retailer 10$11,899 AUD
NZ Jewellers$12,494 AUD

33 data points across 15 retailers

17 retailers$5,902 AUD to $11,899 AUD

Retailer 1
-
$5,471 AUD
$3,834 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
$5,902 AUD
$4,136 USD
View
B
Retailer 3
-
$6,247 AUD
$4,378 USD
View
Final sale: no returns
B
Retailer 4
-
$6,314 AUD
$4,425 USD
View
Retailer 5
-
$6,768 AUD
$4,743 USD
View
Price last confirmed 17 days ago
Retailer 6
-
$6,768 AUD
$4,743 USD
View
Price last confirmed 13 days ago
Retailer 7
-
$6,768 AUD
$4,743 USD
View
Price last confirmed 17 days ago
B
Retailer 8
-
$7,386 AUD
£4,076 GBP
View
B
Retailer 9
-
$7,457 AUD
£4,115 GBP
View
B
Retailer 10
-
$7,591 AUD
$5,320 USD
View
B
Retailer 11
-
$7,591 AUD
$5,320 USD
View
Retailer 12
-
$7,809 AUD
$5,473 USD
View
Price last confirmed 12 days ago
B
Retailer 13
-
$7,848 AUD
$5,500 USD
View
Retailer 14
-
$8,245 AUD
$5,778 USD
View
Price last confirmed 18 days ago
B
Retailer 15
-
$8,452 AUD
€5,641 EUR
View
B
Retailer 16
-
$11,899 AUD
£6,566 GBP
View
Most Expensive
NZ Jewellers
fdee6aa6-9f9f-4667-91a1-f8777d2dc0ff · Oct 21
$12,494 AUD
$8,756 USD
View
Price last confirmed 12 days ago
16 more retailers have this diamond
Prices start from $5,902 AUDSave up to $5,997 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
$5,902 AUD