CaratHunter
Plans
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 $149 USD
As of October 25, 2026
Save $1,019 USD (87%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,168 USD at MOH London · As of October 25, 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 October 25, 2026, with prices from $149 to $1,168, a $1,019 spread on the same certified stone. MOH London lists it at $1,168. 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
Color
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 →
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: Oct 25
Current: $1,168 USD|Low: $149 USD|High: $1,181 USD|Avg: $368 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6$149 USD
Retailer 8$200 USD
Retailer 4$265 USD
Retailer 7$275 USD
Retailer 2$282 USD
Retailer 5$331 USD
Retailer 3$338 USD
Retailer 9$369 USD
MOH London$1,168 USD

39 data points across 9 retailers

8 retailers$149 USD to $1,168 USD

A
Cheapest Retailer
-
$149 USD
Retailer 2
-
$200 USD
View
Price last confirmed 32 days ago
B+
Retailer 3
-
$275 USD
View
B+
Retailer 4
-
$282 USD
£222 GBP
View
Retailer 5
-
$331 USD
View
Price last confirmed 14 days ago
B+
Retailer 6
-
$338 USD
£266 GBP
View
B+
Retailer 7
-
$369 USD
View
Most Expensive
B
MOH London
LG795616319 · Oct 25
$1,168 USD
£920 GBP
View
7 more retailers have this diamond
Prices start from $149 USDSave up to $1,019 USD

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
0.51ct Cushion
$149 USD