CaratHunter
Plans
Cushion|Lab Grown|IGI

1.31ct G SI1 Cushion Lab Grown Diamond

GD • G/SI1 • IGI LG625480540

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

Certificate IGI LG625480540

Diamond specifications and retailer prices

From $509 AUD
As of November 6, 2026
Save $1,848 AUD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,358 AUD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1.31ct lab-grown cushion diamond

This 1.31ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG625480540 or 625480540. Listed at 7 retailers as of November 6, 2026, with prices from $509 to $2,358, a $1,848 spread on the same certified stone. Do Amore Diamonds lists it at $2,358. 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

1.31
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625480540
Dimensions6.40 × 6.39 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.40 mm6.39 mm1.31 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625480540
Side View
Table 60.0%Crown 34.3°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 66.4%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $2,358 AUD|Low: $509 AUD|High: $2,358 AUD|Avg: $1,024 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7$509 AUD
Retailer 5$546 AUD
Retailer 2$603 AUD
Retailer 6$672 AUD
Retailer 4$910 AUD
Retailer 3$1,566 AUD
Do Amore Diamonds$2,358 AUD

42 data points across 7 retailers

7 retailers$509 AUD to $2,358 AUD

B+
Cheapest Retailer
-
$509 AUD
B
Retailer 2
-
$546 AUD
View
B+
Retailer 3
-
$603 AUD
View
B+
Retailer 4
-
$672 AUD
View
B+
Retailer 5
-
$910 AUD
View
B
Retailer 6
-
$1,566 AUD
View
Most Expensive
C
Do Amore Diamonds
27-E53E6D30B · Nov 6
$2,358 AUD
$1,620 USD
View
6 more retailers have this diamond
Prices start from $509 AUDSave up to $1,848 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+
1.31ct Cushion
$509 AUD