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Cushion|Natural|IGI

1.30ct K SI1 Cushion Natural Diamond

GD • K/SI1 • IGI 234651662

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 234651662

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 standard cut grade and certified by IGI 234651662. 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
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle49.8°
Pavilion angle36°
OriginNatural
Grading LabIGI
CertificateIGI 234651662
Dimensions6.52 × 5.40 × 4.06 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Top View
6.52 mm5.40 mm1.30 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 234651662
Side View
Table 65.0%Crown 49.8°Girdle: VTN-THKPavilion 36°Culet: NoneDepth 75.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £1,920 GBP|Low: £1,459 GBP|High: £2,179 GBP|Avg: £1,828 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

39 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
BN4537 · 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