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Marquise|Natural|IGI

1.20ct J SI2 Marquise Natural Diamond

VG • J/SI2 • IGI 830653351

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 830653351

Diamond specifications and retailer prices

From £703 GBP
As of November 5, 2026
Save £628 GBP (47%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,331 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 830653351. Listed at 6 retailers as of November 5, 2026, with prices from £703 to £1,331, a £628 spread on the same certified stone. Wholesale Diamonds Direct lists it at £1,331. 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
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle37.7°
OriginNatural
Grading LabIGI
CertificateIGI 830653351
Dimensions10.74 × 5.60 × 3.31 mm
L/W Ratio1.92
Girdle conditionFaceted
Top View
10.74 mm5.60 mm1.20 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 830653351
Side View
Table 59.0%Crown 37.6°Girdle: MED-THKPavilion 37.7°Culet: NoneDepth 59.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £703 GBP|Low: £702 GBP|High: £1,331 GBP|Avg: £1,003 GBP|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Wholesale Diamonds Direct
November 5, 2026
Retailer 1£703 GBP
Retailer 3£787 GBP
Retailer 2£822 GBP
Retailer 5£827 GBP
Retailer 4£1,157 GBP
Wholesale Diamonds Direct£1,331 GBP

7 data points across 6 retailers

6 retailers£703 GBP to £1,331 GBP

A
Cheapest Retailer
-
£703 GBP
B+
Retailer 2
-
£787 GBP
View
B+
Retailer 3
-
£822 GBP
View
B+
Retailer 4
-
£827 GBP
View
B+
Retailer 5
-
£1,157 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
532455370 · Nov 6
£1,331 GBP
$1,782 USD
View
5 more retailers have this diamond
Prices start from £703 GBPSave up to £628 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.

A
1.20ct Marquise
£703 GBP