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Marquise|Natural|IGI

1.00ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 825619090

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 825619090

Diamond specifications and retailer prices

From £981 GBP
As of November 6, 2026
Save £2,234 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,215 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 825619090. Listed at 14 retailers as of November 5, 2026, with prices from £981 to £3,215, a £2,234 spread on the same certified stone. NZ Jewellers lists it at £3,215. 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
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle39.9°
OriginNatural
Grading LabIGI
CertificateIGI 825619090
Dimensions9.71 × 5.11 × 3.32 mm
L/W Ratio1.90
Girdle conditionFaceted
Top View
9.71 mm5.11 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 825619090
Side View
Table 60.0%Crown 38.3°Girdle: STK-VTKPavilion 39.9°Culet: NoneDepth 65.0%

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: £3,215 GBP|Low: £981 GBP|High: £3,215 GBP|Avg: £1,590 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2£981 GBP
Retailer 12£1,201 GBP
Retailer 10£1,318 GBP
Retailer 11£1,318 GBP
Retailer 9£1,378 GBP
Retailer 3£1,380 GBP
Retailer 4£1,420 GBP
Retailer 13£1,442 GBP
Retailer 8£1,449 GBP
Retailer 5£1,520 GBP
Retailer 6£1,671 GBP
Retailer 7£2,303 GBP
NZ Jewellers£3,215 GBP

45 data points across 13 retailers

14 retailers£981 GBP to £3,215 GBP

A
Cheapest Retailer
-
£981 GBP
B+
Retailer 2
-
£1,201 GBP
View
Retailer 3
-
£1,318 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£1,318 GBP
View
B+
Retailer 5
-
£1,378 GBP
View
B+
Retailer 6
-
£1,380 GBP
View
B+
Retailer 7
-
£1,420 GBP
View
B+
Retailer 8
-
£1,442 GBP
View
B+
Retailer 9
-
£1,449 GBP
View
B+
Retailer 10
-
£1,520 GBP
View
B+
Retailer 11
-
£1,671 GBP
View
Retailer 12
-
£1,739 GBP
View
Price last confirmed 61 days ago
B
Retailer 13
-
£2,303 GBP
View
Most Expensive
B
NZ Jewellers
9ac19a1d-c571-4bc1-ac06-51c02786f755 · Nov 5
£3,215 GBP
$4,303 USD
View
13 more retailers have this diamond
Prices start from £981 GBPSave up to £2,234 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
£981 GBP