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Marquise|Natural|IGI

1.30ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 780669353

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 780669353

Diamond specifications and retailer prices

From £2,126 GBP
As of October 31, 2026
Save £2,489 GBP (54%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £4,614 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 780669353. Listed at 6 retailers as of October 31, 2026, with prices from £2,126 to £4,614, a £2,489 spread on the same certified stone. NZ Jewellers lists it at £4,614. 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
FluorescenceNone
Crown angle38.3°
Pavilion angle40.1°
OriginNatural
Grading LabIGI
CertificateIGI 780669353
Dimensions11.43 × 5.66 × 3.36 mm
L/W Ratio2.02
Girdle conditionFaceted
Top View
11.43 mm5.66 mm1.30 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 780669353
Side View
Table 66.0%Crown 38.3°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 59.4%

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: Oct 31
Current: £4,614 GBP|Low: £2,105 GBP|High: £4,614 GBP|Avg: £2,943 GBP|+3.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£2,126 GBP
Retailer 4£2,207 GBP
Retailer 5£2,292 GBP
Retailer 2£2,539 GBP
Retailer 3£3,681 GBP
NZ Jewellers£4,614 GBP

33 data points across 6 retailers

6 retailers£2,126 GBP to £4,614 GBP

A
Cheapest Retailer
-
£2,126 GBP
A
Retailer 2
-
£2,207 GBP
View
A
Retailer 3
-
£2,292 GBP
View
A
Retailer 4
-
£2,539 GBP
View
B
Retailer 5
-
£3,681 GBP
View
Most Expensive
C
NZ Jewellers
6e742455-6930-4a45-bd17-64353b8a8c4b · Nov 5
£4,614 GBP
$6,176 USD
View
5 more retailers have this diamond
Prices start from £2,126 GBPSave up to £2,489 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
£2,126 GBP