Cushion|Lab Grown|IGI

0.51ct D VS1 Cushion Lab Grown Diamond

VG • D/VS1 • IGI LG838654643

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG838654643

Diamond specifications and retailer prices

From €231 EUR
$258 USD
As of October 30, 2026
Save €301 EUR (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €532 EUR at Riddles Jewelry · As of October 29, 2026
View at Riddles Jewelry

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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG838654643 or 838654643. Listed at 8 retailers as of October 29, 2026, with prices from €231 to €532, a €301 spread on the same certified stone. Riddles Jewelry lists it at €532. 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
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.4°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838654643
Dimensions5.13 × 4.12 × 2.96 mm
L/W Ratio1.25
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.13 mm4.12 mm0.51 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG838654643
Side View
Table 65.0%Crown 37.4°Girdle: MED-THKPavilion 37.6°Culet: NoneDepth 71.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €450 EUR|Low: €124 EUR|High: €852 EUR|Avg: €372 EUR|+8.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Riddles Jewelry
October 19, 2026
Retailer 12€124 EUR
Retailer 7€231 EUR
Retailer 11€238 EUR
Retailer 2€241 EUR
Retailer 5€273 EUR
Retailer 6€273 EUR
Retailer 8€286 EUR
Retailer 10€344 EUR
Retailer 9€367 EUR
Retailer 3€421 EUR
Retailer 1€450 EUR
Retailer 4€494 EUR
Riddles Jewelry€532 EUR
Retailer 13€852 EUR

12 data points across 14 retailers

8 retailers€231 EUR to €532 EUR

A
Cheapest Retailer
-
€231 EUR
$258 USD
Retailer 2
-
€238 EUR
$266 USD
View
Price last confirmed 28 days ago
B+
Retailer 3
-
€273 EUR
$305 USD
View
Retailer 4
-
€286 EUR
$320 USD
View
Price last confirmed 26 days ago
Retailer 5
-
€344 EUR
£302 GBP
View
Price last confirmed 26 days ago
Retailer 6
-
€367 EUR
$410 USD
View
Price last confirmed 26 days ago
B
Retailer 7
-
€450 EUR
CA$699 CAD
View
Most Expensive
B
Riddles Jewelry
1989204854 · Oct 29
€532 EUR
$594 USD
View
7 more retailers have this diamond
Prices start from €231 EURSave up to €301 EUR

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
€231 EUR