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Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 6233946315

Certificate GIA 6233946315

Diamond specifications and retailer prices

From $5,225 AUD
As of November 6, 2026
Save $6,141 AUD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,366 AUD at MOH London · As of November 4, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6233946315. Listed at 13 retailers as of November 4, 2026, with prices from $5,225 to $11,366, a $6,141 spread on the same certified stone. MOH London lists it at $11,366. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle40.42°
OriginNatural
Grading LabGIA
CertificateGIA 6233946315
Dimensions10.42 × 5.56 × 3.54 mm
L/W Ratio1.87
Key to symbols
Feather
Top View
10.42 mm5.56 mm1.20 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6233946315
Side View
Table 62.0%CrownGirdle: STK-VTKPavilion 40.42°Culet: NoneDepth 63.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $11,366 AUD|Low: $5,225 AUD|High: $11,534 AUD|Avg: $7,130 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 7$5,225 AUD
Retailer 12$5,308 AUD
Retailer 5$5,648 AUD
Retailer 3$5,704 AUD
Retailer 13$5,718 AUD
Retailer 10$6,482 AUD
Retailer 11$6,590 AUD
Retailer 9$6,987 AUD
Retailer 2$7,003 AUD
Retailer 4$7,900 AUD
Retailer 8$8,064 AUD
Retailer 6$8,729 AUD
MOH London$11,366 AUD

45 data points across 13 retailers

13 retailers$5,225 AUD to $11,366 AUD

B
Cheapest Retailer
-
$5,225 AUD
B
Retailer 2
-
$5,308 AUD
View
B
Retailer 3
-
$5,648 AUD
View
B
Retailer 4
-
$5,704 AUD
View
B
Retailer 5
-
$5,718 AUD
View
Retailer 6
-
$6,482 AUD
View
Price last confirmed 21 days ago
B
Retailer 7
-
$6,590 AUD
View
B
Retailer 8
-
$6,987 AUD
View
B
Retailer 9
-
$7,003 AUD
View
Retailer 10
-
$7,900 AUD
View
Price last confirmed 14 days ago
B
Retailer 11
-
$8,064 AUD
View
B
Retailer 12
-
$8,729 AUD
View
Most Expensive
B
MOH London
D48607FDD · Nov 4
$11,366 AUD
£6,149 GBP
View
12 more retailers have this diamond
Prices start from $5,225 AUDSave up to $6,141 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
$5,225 AUD