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Cushion|Lab Grown|IGI

0.51ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG795616319

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG795616319

Diamond specifications and retailer prices

From $391 AUD
$275 USD
As of November 1, 2026
Save $1,270 AUD (76%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,662 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG795616319 or 795616319. Listed at 8 retailers as of November 1, 2026, with prices from $391 to $1,662, a $1,270 spread on the same certified stone. MOH London lists it at $1,662. 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

0.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG795616319
Dimensions4.59 × 4.51 × 2.78 mm
L/W Ratio1.02
Girdle conditionFaceted
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
4.59 mm4.51 mm0.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG795616319
Side View
Table 67.0%Crown 35.7°Girdle: MED-THKPavilion 34°Culet: NoneDepth 61.6%

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 1
Current: $1,662 AUD|Low: $212 AUD|High: $1,681 AUD|Avg: $525 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$212 AUD
Retailer 8$285 AUD
Retailer 4$377 AUD
Retailer 7$391 AUD
Retailer 2$402 AUD
Retailer 5$471 AUD
Retailer 3$480 AUD
Retailer 9$525 AUD
MOH London$1,662 AUD

41 data points across 9 retailers

8 retailers$391 AUD to $1,662 AUD

Retailer 1
-
$212 AUD
$149 USD
Price last confirmed 7 days ago
Retailer 2
-
$285 AUD
$200 USD
View
Price last confirmed 34 days ago
B+
Retailer 3
-
$391 AUD
$275 USD
View
B+
Retailer 4
-
$402 AUD
£222 GBP
View
Retailer 5
-
$471 AUD
$331 USD
View
Price last confirmed 16 days ago
B
Retailer 6
-
$480 AUD
£266 GBP
View
B
Retailer 7
-
$525 AUD
$369 USD
View
Most Expensive
B
MOH London
LG795616319 · Nov 1
$1,662 AUD
£919 GBP
View
7 more retailers have this diamond
Prices start from $391 AUDSave up to $1,270 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+
0.51ct Cushion
$391 AUD