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Cushion|Natural|IGI

1.30ct K SI1 Cushion Natural Diamond

VG • K/SI1 • IGI 245652713

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI 245652713

Diamond specifications and retailer prices

From £1,459 GBP
As of November 5, 2026
Save £620 GBP (30%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,079 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 245652713. Listed at 3 retailers as of November 5, 2026, with prices from £1,459 to £2,079, a £620 spread on the same certified stone. Yorxs lists it at £2,079. 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

1.30
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle39.9°
Pavilion angle39.1°
OriginNatural
Grading LabIGI
CertificateIGI 245652713
Dimensions5.99 × 5.90 × 4.27 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Top View
5.99 mm5.90 mm1.30 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 245652713
Side View
Table 62.0%Crown 39.9°Girdle: MED-VTKPavilion 39.1°Culet: NoneDepth 72.4%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £1,920 GBP|Low: £1,459 GBP|High: £2,179 GBP|Avg: £1,826 GBP|+2.9%
Retailer 1
Retailer 2
Yorxs
November 6, 2026
Retailer 2£1,459 GBP
Retailer 1£1,920 GBP
Yorxs£2,079 GBP

40 data points across 3 retailers

3 retailers£1,459 GBP to £2,079 GBP

B+
Cheapest Retailer
-
£1,459 GBP
B+
Retailer 2
-
£1,920 GBP
View
Most Expensive
B
Yorxs
BN4753 · Nov 6
£2,079 GBP
€2,650 EUR
View
2 more retailers have this diamond
Prices start from £1,459 GBPSave up to £620 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+
1.30ct Cushion
£1,459 GBP