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Marquise|Natural|IGI

1.02ct I SI1 Marquise Natural Diamond

GD • I/SI1 • IGI 490197349

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 490197349

Diamond specifications and retailer prices

From £1,217 GBP
As of November 6, 2026
Save £2,199 GBP (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,417 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.02ct natural marquise diamond

This 1.02ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI 490197349. Listed at 16 retailers as of November 3, 2026, with prices from £1,217 to £3,417, a £2,199 spread on the same certified stone. NZ Jewellers lists it at £3,417. 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

1.02
Carat
I
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle31.9°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 490197349
Dimensions8.21 × 5.09 × 3.54 mm
L/W Ratio1.61
Girdle conditionFaceted
Culet sizePointed
Top View
8.21 mm5.09 mm1.02 ctI / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI 490197349
Side View
Table 51.5%Crown 31.9°Girdle: STK-ETKPavilion 40.9°Culet: NoneDepth 69.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,417 GBP|Low: £1,217 GBP|High: £3,417 GBP|Avg: £1,917 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
Retailer 14
November 6, 2026
Retailer 2£1,217 GBP
Retailer 6£1,508 GBP
Retailer 5£1,517 GBP
Retailer 13£1,552 GBP
Retailer 9£1,591 GBP
Retailer 4£1,634 GBP
Retailer 12£1,634 GBP
Retailer 3£1,709 GBP
Retailer 7£1,806 GBP
Retailer 14£1,886 GBP
Retailer 11£2,008 GBP
Retailer 10£2,032 GBP
Retailer 8£2,855 GBP
NZ Jewellers£3,417 GBP

29 data points across 14 retailers

16 retailers£1,217 GBP to £3,417 GBP

B+
Cheapest Retailer
-
£1,217 GBP
B+
Retailer 2
-
£1,476 GBP
View
B+
Retailer 3
-
£1,508 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,517 GBP
View
B+
Retailer 5
-
£1,552 GBP
View
B+
Retailer 6
-
£1,591 GBP
View
B+
Retailer 7
-
£1,634 GBP
View
Retailer 8
-
£1,634 GBP
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£1,647 GBP
View
B+
Retailer 10
-
£1,709 GBP
View
B+
Retailer 11
-
£1,806 GBP
View
B+
Retailer 12
-
£1,886 GBP
View
B+
Retailer 13
-
£2,008 GBP
View
B+
Retailer 14
-
£2,032 GBP
View
B
Retailer 15
-
£2,855 GBP
View
Most Expensive
C
NZ Jewellers
b56b630e-bcbf-4ac9-9d45-6ea7030aedba · Nov 3
£3,417 GBP
$4,573 USD
View
15 more retailers have this diamond
Prices start from £1,217 GBPSave up to £2,199 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.

B+
1.02ct Marquise
£1,217 GBP