Marquise|Natural|IGI

1.02ct H SI1 Marquise Natural Diamond

VG • H/SI1 • IGI 790690528

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 790690528

Diamond specifications and retailer prices

From £1,765 GBP
As of November 6, 2026
Save £1,677 GBP (49%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,881 GBP at NZ Jewellers · As of September 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 790690528. Listed at 13 retailers as of November 4, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle32°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 790690528
Dimensions11.57 × 5.13 × 2.99 mm
L/W Ratio2.26
Girdle conditionFaceted
Culet sizePointed
Top View
11.57 mm5.13 mm1.02 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 790690528
Side View
Table 65.0%Crown 32°Girdle: THN-STKPavilion 40.4°Culet: NoneDepth 58.3%

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: £1,801 GBP|Low: £1,570 GBP|High: £3,470 GBP|Avg: £2,149 GBP|+14.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£1,765 GBP
Retailer 9£1,789 GBP
Retailer 1£1,801 GBP
Retailer 8£1,946 GBP
Retailer 4£1,974 GBP
Retailer 6£2,075 GBP
Retailer 3£2,405 GBP
Retailer 2£2,422 GBP
Retailer 5£3,442 GBP

40 data points across 9 retailers

13 retailers£1,765 GBP to £3,442 GBP

A
Cheapest Retailer
-
£1,765 GBP
B+
Retailer 2
-
£1,801 GBP
View
Final sale: no returns
Retailer 3
-
£1,857 GBP
View
Price last confirmed 30 days ago
Retailer 4
-
£1,857 GBP
View
Price last confirmed 22 days ago
Retailer 5
-
£1,942 GBP
View
Price last confirmed 37 days ago
B+
Retailer 6
-
£1,946 GBP
View
B+
Retailer 7
-
£1,974 GBP
View
B+
Retailer 8
-
£2,075 GBP
View
Retailer 9
-
£2,142 GBP
View
Price last confirmed 29 days ago
B
Retailer 10
-
£2,405 GBP
View
B
Retailer 11
-
£2,422 GBP
View
B
Retailer 12
-
£3,442 GBP
View
Most Expensive
NZ Jewellers
37995619-7953-485b-b3ea-6febf913780e · Sep 30
£3,881 GBP
$5,195 USD
View
Price last confirmed 37 days ago
12 more retailers have this diamond
Prices start from £1,765 GBPSave up to £1,677 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
1.02ct Marquise
£1,765 GBP