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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 $2,842 AUD
As of November 5, 2026
Save $1,207 AUD (30%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,050 AUD 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 $2,842 to $4,050, a $1,207 spread on the same certified stone. Yorxs lists it at $4,050. 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $3,740 AUD|Low: $2,842 AUD|High: $4,245 AUD|Avg: $3,561 AUD|+2.9%
Retailer 1
Retailer 2
Yorxs
November 6, 2026
Retailer 2$2,842 AUD
Retailer 1$3,740 AUD
Yorxs$4,050 AUD

39 data points across 3 retailers

3 retailers$2,842 AUD to $4,050 AUD

B+
Cheapest Retailer
-
$2,842 AUD
B
Retailer 2
-
$3,740 AUD
View
Most Expensive
B
Yorxs
BN4537 · Nov 6
$4,050 AUD
€2,650 EUR
View
2 more retailers have this diamond
Prices start from $2,842 AUDSave up to $1,207 AUD

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
$2,842 AUD