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Marquise|Natural|IGI

1.00ct J VS1 Marquise Natural Diamond

VG • J/VS1 • IGI 603372442

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 603372442

Diamond specifications and retailer prices

From £1,114 GBP
As of November 4, 2026
Save £986 GBP (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,979 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct 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 603372442. Listed at 13 retailers as of November 4, 2026, with a 89% 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

1.00
Carat
J
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 603372442
Dimensions9.33 × 5.36 × 3.40 mm
L/W Ratio1.74
Girdle conditionFaceted
Culet sizePointed
Top View
9.33 mm5.36 mm1.00 ctJ / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 603372442
Side View
Table 55.0%Crown 35.5°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 63.4%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: £1,632 GBP|Low: £1,114 GBP|High: £2,182 GBP|Avg: £1,439 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£1,114 GBP
Retailer 7£1,154 GBP
Retailer 8£1,179 GBP
Retailer 5£1,263 GBP
Retailer 2£1,356 GBP
Retailer 3£1,467 GBP
Retailer 1£1,632 GBP
Retailer 4£2,100 GBP

43 data points across 8 retailers

13 retailers£1,114 GBP to £2,100 GBP

A
Cheapest Retailer
-
£1,114 GBP
A
Retailer 2
-
£1,154 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,179 GBP
View
Retailer 4
-
£1,222 GBP
View
Price last confirmed 21 days ago
Retailer 5
-
£1,222 GBP
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,263 GBP
View
Retailer 7
-
£1,278 GBP
View
Price last confirmed 21 days ago
A
Retailer 8
-
£1,356 GBP
View
Retailer 9
-
£1,409 GBP
View
Price last confirmed 18 days ago
A
Retailer 10
-
£1,467 GBP
View
A
Retailer 11
-
£1,632 GBP
View
B+
Retailer 12
-
£2,100 GBP
View
Most Expensive
NZ Jewellers
c36091a1-a876-4782-b3e8-dcd2abfe53ab · Oct 17
£2,979 GBP
$3,987 USD
View
Price last confirmed 19 days ago
12 more retailers have this diamond
Prices start from £1,114 GBPSave up to £986 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
1.00ct Marquise
£1,114 GBP