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Cushion|Natural|IGI

1.00ct I SI2 Cushion Natural Diamond

VG • I/SI2 • IGI 700529276

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 700529276

Diamond specifications and retailer prices

From £1,146 GBP
As of November 4, 2026
Save £1,922 GBP (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,068 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural cushion diamond

This 1ct natural cushion 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 700529276. Listed at 12 retailers as of November 4, 2026, with prices from £1,146 to £3,068, a £1,922 spread on the same certified stone. NZ Jewellers lists it at £3,068. 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
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle39.9°
OriginNatural
Grading LabIGI
CertificateIGI 700529276
Dimensions9.49 × 5.21 × 3.40 mm
L/W Ratio1.82
Girdle conditionFaceted
Culet sizePointed
Top View
9.49 mm5.21 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 700529276
Side View
Table 62.0%Crown 38.5°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 65.3%

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 4
Current: £1,236 GBP|Low: £883 GBP|High: £2,338 GBP|Avg: £1,434 GBP|-1.0%
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 4£883 GBP
Retailer 2£1,146 GBP
Retailer 9£1,161 GBP
Retailer 11£1,180 GBP
Retailer 10£1,236 GBP
Retailer 1£1,236 GBP
Retailer 7£1,258 GBP
Retailer 8£1,316 GBP
Retailer 12£1,360 GBP
Retailer 6£1,711 GBP
Retailer 5£2,197 GBP
Retailer 3£2,306 GBP

20 data points across 12 retailers

12 retailers£1,146 GBP to £3,068 GBP

B+
Cheapest Retailer
-
£1,146 GBP
B+
Retailer 2
-
£1,161 GBP
View
Final sale: no returns
B+
Retailer 3
-
£1,180 GBP
View
B+
Retailer 4
-
£1,236 GBP
View
A
Retailer 5
-
£1,236 GBP
View
Retailer 6
-
£1,258 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,258 GBP
View
B+
Retailer 8
-
£1,316 GBP
View
B+
Retailer 9
-
£1,360 GBP
View
B
Retailer 10
-
£1,711 GBP
View
B
Retailer 11
-
£2,197 GBP
View
Most Expensive
C
NZ Jewellers
d5326691-ab70-421c-99a5-6186438f3b47 · Nov 5
£3,068 GBP
$4,107 USD
View
11 more retailers have this diamond
Prices start from £1,146 GBPSave up to £1,922 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 Cushion
£1,146 GBP