CaratHunter
Plans
Cushion|Lab Grown|IGI

1.51ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG530292821

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG530292821

Diamond specifications and retailer prices

From €251 EUR
As of November 6, 2026
Save €854 EUR (77%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,105 EUR at MOH London · As of November 7, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG530292821 or 530292821. Listed at 15 retailers as of November 6, 2026, with prices from €251 to €1,105, a €854 spread on the same certified stone. MOH London lists it at €1,105. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG530292821
Dimensions6.78 × 6.55 × 4.36 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.78 mm6.55 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG530292821
Side View
Table 68.5%Crown 34.4°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 66.6%

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 6
Current: €1,105 EUR|Low: €306 EUR|High: €1,146 EUR|Avg: €673 EUR|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 4€308 EUR
Retailer 10€372 EUR
Retailer 6€495 EUR
Retailer 5€522 EUR
Retailer 2€588 EUR
Retailer 7€703 EUR
Retailer 9€923 EUR
Retailer 3€989 EUR
Retailer 8€1,030 EUR
MOH London€1,105 EUR

39 data points across 10 retailers

15 retailers€251 EUR to €1,105 EUR

A
Cheapest Retailer
-
€251 EUR
Final sale: no returns
A
Retailer 2
-
€277 EUR
View
A
Retailer 3
-
€308 EUR
View
B+
Retailer 4
-
€372 EUR
View
A
Retailer 5
-
€456 EUR
View
A
Retailer 6
-
€495 EUR
View
A
Retailer 7
-
€501 EUR
View
A
Retailer 8
-
€522 EUR
View
B+
Retailer 9
-
€588 EUR
View
B+
Retailer 10
-
€703 EUR
View
Retailer 11
-
€923 EUR
View
Price last confirmed 17 days ago
B
Retailer 12
-
€937 EUR
View
B
Retailer 13
-
€989 EUR
View
B
Retailer 14
-
€1,030 EUR
View
Most Expensive
B
MOH London
LG530292821 · Nov 7
€1,105 EUR
£971 GBP
View
14 more retailers have this diamond
Prices start from €251 EURSave up to €854 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
€251 EUR