Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 6233946315

Certificate GIA 6233946315

Diamond specifications and retailer prices

From $3,590 USD
As of November 5, 2026
Save $4,219 USD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,809 USD 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 $3,590 to $7,809, a $4,219 spread on the same certified stone. MOH London lists it at $7,809. 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
Color
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

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,809 USD|Low: $3,590 USD|High: $7,925 USD|Avg: $4,899 USD|-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$3,590 USD
Retailer 12$3,647 USD
Retailer 5$3,881 USD
Retailer 3$3,919 USD
Retailer 13$3,929 USD
Retailer 10$4,454 USD
Retailer 11$4,528 USD
Retailer 9$4,801 USD
Retailer 2$4,812 USD
Retailer 4$5,428 USD
Retailer 8$5,541 USD
Retailer 6$5,998 USD
MOH London$7,809 USD

45 data points across 13 retailers

13 retailers$3,590 USD to $7,809 USD

B
Cheapest Retailer
-
$3,590 USD
B
Retailer 2
-
$3,647 USD
View
B
Retailer 3
-
$3,881 USD
View
B
Retailer 4
-
$3,919 USD
View
B
Retailer 5
-
$3,929 USD
View
Retailer 6
-
$4,454 USD
View
Price last confirmed 21 days ago
B
Retailer 7
-
$4,528 USD
View
B
Retailer 8
-
$4,801 USD
View
B
Retailer 9
-
$4,812 USD
View
Retailer 10
-
$5,428 USD
View
Price last confirmed 14 days ago
B
Retailer 11
-
$5,541 USD
View
B
Retailer 12
-
$5,998 USD
View
Most Expensive
B
MOH London
D48607FDD · Nov 4
$7,809 USD
£6,149 GBP
View
12 more retailers have this diamond
Prices start from $3,590 USDSave up to $4,219 USD

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
$3,590 USD