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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 £2,682 GBP
As of November 6, 2026
Save £3,152 GBP (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,834 GBP 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 £2,682 to £5,834, a £3,152 spread on the same certified stone. MOH London lists it at £5,834. 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

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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: £5,834 GBP|Low: £2,682 GBP|High: £5,921 GBP|Avg: £3,660 GBP|-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£2,682 GBP
Retailer 12£2,725 GBP
Retailer 5£2,900 GBP
Retailer 3£2,928 GBP
Retailer 13£2,935 GBP
Retailer 10£3,328 GBP
Retailer 11£3,383 GBP
Retailer 9£3,587 GBP
Retailer 2£3,595 GBP
Retailer 4£4,055 GBP
Retailer 8£4,140 GBP
Retailer 6£4,481 GBP
MOH London£5,834 GBP

45 data points across 13 retailers

13 retailers£2,682 GBP to £5,834 GBP

B
Cheapest Retailer
-
£2,682 GBP
B
Retailer 2
-
£2,725 GBP
View
B
Retailer 3
-
£2,900 GBP
View
B
Retailer 4
-
£2,928 GBP
View
B
Retailer 5
-
£2,935 GBP
View
Retailer 6
-
£3,328 GBP
View
Price last confirmed 21 days ago
B
Retailer 7
-
£3,383 GBP
View
B
Retailer 8
-
£3,587 GBP
View
B
Retailer 9
-
£3,595 GBP
View
Retailer 10
-
£4,055 GBP
View
Price last confirmed 14 days ago
B
Retailer 11
-
£4,140 GBP
View
B
Retailer 12
-
£4,481 GBP
View
Most Expensive
B
MOH London
D48607FDD · Nov 4
£5,834 GBP
View
12 more retailers have this diamond
Prices start from £2,682 GBPSave up to £3,152 GBP

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
£2,682 GBP