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Cushion|Lab Grown|IGI

1.51ct I VS1 Cushion Lab Grown Diamond

VG • I/VS1 • IGI LG407985767

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG407985767

Diamond specifications and retailer prices

From $725 NZD
$408 USD
As of November 1, 2026
Save $281 NZD (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,937 NZD at MOH London · As of October 26, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG407985767 or 407985767. Listed at 3 retailers as of November 1, 2026, with a 39% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle34°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407985767
Dimensions7.07 × 6.39 × 4.20 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.07 mm6.39 mm1.51 ctI / VS1
OriginLab Grown
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG407985767
Side View
Table 64.5%Crown 34°Girdle: MED-VTKPavilion 40.3°Culet: NoneDepth 65.7%

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: $1,937 NZD|Low: $681 NZD|High: $1,957 NZD|Avg: $1,248 NZD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 25, 2026
Retailer 2$725 NZD
Retailer 3$1,006 NZD
Retailer 5$1,108 NZD
Retailer 4$1,353 NZD
Retailer 6$1,447 NZD
MOH London$1,937 NZD

8 data points across 6 retailers

3 retailers$725 NZD to $1,006 NZD

B
Cheapest Retailer
-
$725 NZD
$408 USD
B+
Retailer 2
-
$1,006 NZD
$566 USD
View
Most Expensive
MOH London
LG407985767 · Oct 26
$1,937 NZD
£858 GBP
View
Price last confirmed 7 days ago
2 more retailers have this diamond
Prices start from $725 NZDSave up to $281 NZD

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
$725 NZD