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Marquise|Natural|IGI

1.20ct J SI2 Marquise Natural Diamond

VG • J/SI2 • IGI 763630146

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 763630146

Diamond specifications and retailer prices

From £1,055 GBP
As of November 5, 2026
Save £480 GBP (31%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,761 GBP at Wholesale Diamonds Direct · As of October 27, 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 763630146. Listed at 6 retailers as of November 5, 2026, with a 45% 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
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.6°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 763630146
Dimensions10.81 × 5.41 × 3.40 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Top View
10.81 mm5.41 mm1.20 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 763630146
Side View
Table 57.0%Crown 39.6°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 62.8%

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: £1,055 GBP|Low: £1,050 GBP|High: £1,966 GBP|Avg: £1,521 GBP|-9.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
November 5, 2026
Retailer 1£1,055 GBP
Retailer 4£1,080 GBP
Retailer 3£1,420 GBP
Retailer 2£1,492 GBP
Retailer 6£1,535 GBP
Wholesale Diamonds Direct£1,761 GBP
Retailer 5£1,879 GBP

28 data points across 7 retailers

6 retailers£1,055 GBP to £1,535 GBP

A
Cheapest Retailer
-
£1,055 GBP
A
Retailer 2
-
£1,080 GBP
View
B+
Retailer 3
-
£1,420 GBP
View
B+
Retailer 4
-
£1,492 GBP
View
B+
Retailer 5
-
£1,535 GBP
View
Most Expensive
Wholesale Diamonds Direct
276049718 · Oct 27
£1,761 GBP
$2,358 USD
View
Price last confirmed 11 days ago
5 more retailers have this diamond
Prices start from £1,055 GBPSave up to £480 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
£1,055 GBP