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Marquise|Natural|IGI

1.20ct J VS1 Marquise Natural Diamond

VG • J/VS1 • IGI 780669590

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 780669590

Diamond specifications and retailer prices

From £1,476 GBP
As of November 5, 2026
Save £2,415 GBP (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,891 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 780669590. Listed at 7 retailers as of November 5, 2026, with prices from £1,476 to £3,891, a £2,415 spread on the same certified stone. NZ Jewellers lists it at £3,891. 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
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.9°
Pavilion angle39.6°
OriginNatural
Grading LabIGI
CertificateIGI 780669590
Dimensions10.50 × 5.35 × 3.49 mm
L/W Ratio1.96
Girdle conditionFaceted
Top View
10.50 mm5.35 mm1.20 ctJ / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 780669590
Side View
Table 59.0%Crown 43.9°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 65.2%

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: £3,891 GBP|Low: £1,401 GBP|High: £4,166 GBP|Avg: £2,472 GBP|+4.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3£1,476 GBP
Retailer 5£1,861 GBP
Retailer 7£1,934 GBP
Retailer 6£1,947 GBP
Retailer 2£2,280 GBP
Retailer 4£3,251 GBP
NZ Jewellers£3,891 GBP

34 data points across 7 retailers

7 retailers£1,476 GBP to £3,891 GBP

A
Cheapest Retailer
-
£1,476 GBP
A
Retailer 2
-
£1,861 GBP
View
A
Retailer 3
-
£1,934 GBP
View
A
Retailer 4
-
£1,947 GBP
View
B+
Retailer 5
-
£2,280 GBP
View
B
Retailer 6
-
£3,251 GBP
View
Most Expensive
B
NZ Jewellers
10718315-486a-47e1-8f8f-e0e43309a4d2 · Nov 5
£3,891 GBP
$5,208 USD
View
6 more retailers have this diamond
Prices start from £1,476 GBPSave up to £2,415 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
£1,476 GBP