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Marquise|Natural|IGI

1.30ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 819640378

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 819640378

Diamond specifications and retailer prices

From £2,402 GBP
As of November 1, 2026
Save £2,571 GBP (52%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,973 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural marquise diamond

This 1.3ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 819640378. Listed at 9 retailers as of November 1, 2026, with prices from £2,402 to £4,973, a £2,571 spread on the same certified stone. NZ Jewellers lists it at £4,973. 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

1.30
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle46.2°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 819640378
Dimensions10.71 × 5.42 × 3.57 mm
L/W Ratio1.98
Girdle conditionFaceted
Culet sizeNone
Top View
10.71 mm5.42 mm1.30 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 819640378
Side View
Table 61.0%Crown 46.2°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 65.9%

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 1
Current: £4,973 GBP|Low: £2,402 GBP|High: £5,114 GBP|Avg: £3,375 GBP|-2.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£2,402 GBP
Retailer 4£2,498 GBP
Retailer 9£2,752 GBP
Retailer 2£2,769 GBP
Retailer 5£2,855 GBP
Retailer 7£2,965 GBP
Retailer 3£3,292 GBP
Retailer 6£4,773 GBP
NZ Jewellers£4,973 GBP

32 data points across 9 retailers

9 retailers£2,402 GBP to £4,973 GBP

A
Cheapest Retailer
-
£2,402 GBP
B+
Retailer 2
-
£2,498 GBP
View
B+
Retailer 3
-
£2,752 GBP
View
B+
Retailer 4
-
£2,769 GBP
View
B+
Retailer 5
-
£2,855 GBP
View
B+
Retailer 6
-
£2,965 GBP
View
B
Retailer 7
-
£3,292 GBP
View
B
Retailer 8
-
£4,773 GBP
View
Most Expensive
B
NZ Jewellers
472a3a6f-37ec-4efc-8c1b-ed4c08033d22 · Nov 5
£4,973 GBP
$6,656 USD
View
8 more retailers have this diamond
Prices start from £2,402 GBPSave up to £2,571 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
1.30ct Marquise
£2,402 GBP