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Marquise|Natural|IGI

1.00ct K SI2 Marquise Natural Diamond

VG • K/SI2 • IGI 778617524

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 778617524

Diamond specifications and retailer prices

From £659 GBP
As of November 6, 2026
Save £1,503 GBP (70%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,162 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 778617524. Listed at 13 retailers as of November 5, 2026, with prices from £659 to £2,162, a £1,503 spread on the same certified stone. NZ Jewellers lists it at £2,162. 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
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle38°
OriginNatural
Grading LabIGI
CertificateIGI 778617524
Dimensions10.13 × 5.34 × 3.21 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Top View
10.13 mm5.34 mm1.00 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 778617524
Side View
Table 58.0%Crown 34.1°Girdle: MED-THKPavilion 38°Culet: NoneDepth 60.1%

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 6
Current: £659 GBP|Low: £659 GBP|High: £1,643 GBP|Avg: £1,002 GBP|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 1£659 GBP
Retailer 9£849 GBP
Retailer 11£886 GBP
Retailer 8£921 GBP
Retailer 2£922 GBP
Retailer 12£958 GBP
Retailer 10£974 GBP
Retailer 3£986 GBP
Retailer 7£1,003 GBP
Retailer 4£1,023 GBP
Retailer 5£1,143 GBP
Retailer 6£1,619 GBP

46 data points across 12 retailers

13 retailers£659 GBP to £2,162 GBP

A
Cheapest Retailer
-
£659 GBP
B+
Retailer 2
-
£849 GBP
View
Retailer 3
-
£886 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£886 GBP
View
B+
Retailer 5
-
£921 GBP
View
B+
Retailer 6
-
£922 GBP
View
B+
Retailer 7
-
£974 GBP
View
B+
Retailer 8
-
£986 GBP
View
B+
Retailer 9
-
£1,003 GBP
View
B+
Retailer 10
-
£1,023 GBP
View
B+
Retailer 11
-
£1,143 GBP
View
B+
Retailer 12
-
£1,619 GBP
View
Most Expensive
B
NZ Jewellers
bfb7851c-c2b8-445b-a8fc-a74bbb8d6760 · Nov 5
£2,162 GBP
$2,910 USD
View
12 more retailers have this diamond
Prices start from £659 GBPSave up to £1,503 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
£659 GBP