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Marquise|Natural|IGI

1.30ct K SI1 Marquise Natural Diamond

VG • K/SI1 • IGI 770656687

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 770656687

Diamond specifications and retailer prices

From £1,604 GBP
As of November 6, 2026
Save £1,853 GBP (54%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,457 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 770656687. Listed at 7 retailers as of November 5, 2026, with prices from £1,604 to £3,457, a £1,853 spread on the same certified stone. NZ Jewellers lists it at £3,457. 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 770656687
Dimensions10.38 × 5.49 × 3.70 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizePointed
Top View
10.38 mm5.49 mm1.30 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 770656687
Side View
Table 56.0%Crown 38°Girdle: THK-VTKPavilion 40.4°Culet: NoneDepth 67.4%

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 6
Current: £3,457 GBP|Low: £1,244 GBP|High: £3,666 GBP|Avg: £1,964 GBP|-5.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10£1,386 GBP
Retailer 2£1,604 GBP
Retailer 11£1,629 GBP
Retailer 5£1,654 GBP
Retailer 9£1,719 GBP
Retailer 8£1,727 GBP
Retailer 6£1,730 GBP
Retailer 3£1,850 GBP
Retailer 4£2,023 GBP
Retailer 7£2,896 GBP
NZ Jewellers£3,457 GBP

22 data points across 11 retailers

7 retailers£1,604 GBP to £3,457 GBP

A
Cheapest Retailer
-
£1,604 GBP
A
Retailer 2
-
£1,654 GBP
View
A
Retailer 3
-
£1,727 GBP
View
A
Retailer 4
-
£1,730 GBP
View
B+
Retailer 5
-
£2,023 GBP
View
B+
Retailer 6
-
£2,896 GBP
View
Most Expensive
B
NZ Jewellers
ff28b0e5-a110-42f8-bd35-2ec06f603bee · Nov 5
£3,457 GBP
$4,653 USD
View
6 more retailers have this diamond
Prices start from £1,604 GBPSave up to £1,853 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
£1,604 GBP