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Cushion|Lab Grown|IGI

2.51ct H SI1 Cushion Lab Grown Diamond

VG • H/SI1 • IGI LG510167161

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG510167161

Diamond specifications and retailer prices

From $2,958 NZD
As of November 6, 2026
Save $6,173 NZD (68%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $9,132 NZD at MOH London · As of November 3, 2026
View at MOH London

About this 2.51ct lab-grown cushion diamond

This 2.51ct lab-grown cushion sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG510167161 or 510167161. Listed at 4 retailers as of November 3, 2026, with prices from $2,958 to $9,132, a $6,173 spread on the same certified stone. MOH London lists it at $9,132. 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

2.51
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510167161
Dimensions8.77 × 7.58 × 4.97 mm
L/W Ratio1.16
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
8.77 mm7.58 mm2.51 ctH / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510167161
Side View
Table 67.5%Crown 35.5°Girdle: THN-MEDPavilion 38.5°Culet: NoneDepth 65.6%

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: $9,132 NZD|Low: $2,958 NZD|High: $11,442 NZD|Avg: $6,710 NZD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$2,958 NZD
Retailer 6$3,509 NZD
Retailer 2$4,990 NZD
Retailer 3$8,132 NZD
MOH London$9,132 NZD
Retailer 5$11,442 NZD

10 data points across 6 retailers

4 retailers$2,958 NZD to $9,132 NZD

B+
Cheapest Retailer
-
$2,958 NZD
B
Retailer 2
-
$4,990 NZD
View
B
Retailer 3
-
$8,132 NZD
View
Most Expensive
B
MOH London
LG510167161 · Nov 3
$9,132 NZD
£3,986 GBP
View
3 more retailers have this diamond
Prices start from $2,958 NZDSave up to $6,173 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+
2.51ct Cushion
$2,958 NZD