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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 $2,387 AUD
As of November 6, 2026
Save $4,981 AUD (68%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $7,368 AUD 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 $2,387 to $7,368, a $4,981 spread on the same certified stone. MOH London lists it at $7,368. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,368 AUD|Low: $2,387 AUD|High: $9,232 AUD|Avg: $5,414 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$2,387 AUD
Retailer 6$2,831 AUD
Retailer 2$4,026 AUD
Retailer 3$6,561 AUD
MOH London$7,368 AUD
Retailer 5$9,232 AUD

10 data points across 6 retailers

4 retailers$2,387 AUD to $7,368 AUD

B+
Cheapest Retailer
-
$2,387 AUD
B
Retailer 2
-
$4,026 AUD
View
B
Retailer 3
-
$6,561 AUD
View
Most Expensive
B
MOH London
LG510167161 · Nov 3
$7,368 AUD
£3,986 GBP
View
3 more retailers have this diamond
Prices start from $2,387 AUDSave up to $4,981 AUD

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
$2,387 AUD