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Cushion|Lab Grown|IGI

1.51ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG520298323

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

Certificate IGI LG520298323

Diamond specifications and retailer prices

From €342 EUR
$382 USD
As of November 1, 2026
Save €1,762 EUR (84%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €2,103 EUR at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG520298323 or 520298323. Listed at 8 retailers as of November 1, 2026, with prices from €342 to €2,103, a €1,762 spread on the same certified stone. Do Amore Diamonds lists it at €2,103. 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

1.51
Carat
G
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520298323
Dimensions6.54 × 6.47 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.54 mm6.47 mm1.51 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520298323
Side View
Table 62.5%Crown 35°Girdle: STK-VTKPavilion 40.4°Culet: NoneDepth 69.9%

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 1
Current: €2,103 EUR|Low: €342 EUR|High: €2,103 EUR|Avg: €785 EUR
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3€342 EUR
Retailer 5€455 EUR
Retailer 2€521 EUR
Retailer 6€703 EUR
Retailer 7€742 EUR
Retailer 8€951 EUR
Retailer 4€1,206 EUR
Do Amore Diamonds€2,103 EUR

35 data points across 8 retailers

8 retailers€342 EUR to €2,103 EUR

A
Cheapest Retailer
-
€342 EUR
$382 USD
B+
Retailer 2
-
€455 EUR
$508 USD
View
B+
Retailer 3
-
€521 EUR
£459 GBP
View
B+
Retailer 4
-
€703 EUR
$785 USD
View
B+
Retailer 5
-
€742 EUR
$829 USD
View
B
Retailer 6
-
€951 EUR
$1,063 USD
View
C
Retailer 7
-
€1,206 EUR
£1,061 GBP
View
Most Expensive
C
Do Amore Diamonds
27-3AE4D1B28 · Nov 1
€2,103 EUR
$2,350 USD
View
7 more retailers have this diamond
Prices start from €342 EURSave up to €1,762 EUR

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
1.51ct Cushion
€342 EUR