CaratHunter
Plans
Cushion|Lab Grown|IGI

1.51ct H SI1 Cushion Lab Grown Diamond

GD • H/SI1 • IGI LG526259531

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG526259531

Diamond specifications and retailer prices

From €275 EUR
$307 USD
As of November 1, 2026
Save €944 EUR (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €1,219 EUR at MOH London · As of November 1, 2026
View at MOH London

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG526259531 or 526259531. Listed at 9 retailers as of November 1, 2026, with prices from €275 to €1,219, a €944 spread on the same certified stone. MOH London lists it at €1,219. 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
H
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526259531
Dimensions7.33 × 7.14 × 4.32 mm
L/W Ratio1.03
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
7.33 mm7.14 mm1.51 ctH / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526259531
Side View
Table 63.5%Crown 33.9°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 60.5%

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 1
Current: €1,219 EUR|Low: €196 EUR|High: €1,233 EUR|Avg: €611 EUR|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7€275 EUR
Retailer 4€304 EUR
Retailer 9€433 EUR
Retailer 3€434 EUR
Retailer 6€503 EUR
Retailer 8€605 EUR
Retailer 10€617 EUR
Retailer 2€707 EUR
Retailer 5€868 EUR
MOH London€1,219 EUR

14 data points across 10 retailers

9 retailers€275 EUR to €1,219 EUR

B+
Cheapest Retailer
-
€275 EUR
$307 USD
Final sale: no returns
Retailer 2
-
€304 EUR
$340 USD
View
Price last confirmed 24 days ago
B+
Retailer 3
-
€433 EUR
$484 USD
View
B+
Retailer 4
-
€434 EUR
$485 USD
View
B+
Retailer 5
-
€503 EUR
$562 USD
View
B+
Retailer 6
-
€605 EUR
$676 USD
View
B+
Retailer 7
-
€707 EUR
$790 USD
View
B
Retailer 8
-
€868 EUR
$970 USD
View
Most Expensive
B
MOH London
LG526259531 · Nov 1
€1,219 EUR
£1,072 GBP
View
8 more retailers have this diamond
Prices start from €275 EURSave up to €944 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.

B+
1.51ct Cushion
€275 EUR