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 $367 AUD
$258 USD
As of October 30, 2026
Save $478 AUD (57%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $845 AUD 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 9 retailers as of October 29, 2026, with prices from $367 to $845, a $478 spread on the same certified stone. Riddles Jewelry lists it at $845. 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

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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: $716 AUD|Low: $198 AUD|High: $1,355 AUD|Avg: $591 AUD|+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$198 AUD
Retailer 7$367 AUD
Retailer 11$379 AUD
Retailer 2$383 AUD
Retailer 5$434 AUD
Retailer 6$434 AUD
Retailer 8$455 AUD
Retailer 10$547 AUD
Retailer 9$584 AUD
Retailer 3$669 AUD
Retailer 1$716 AUD
Retailer 4$786 AUD
Riddles Jewelry$845 AUD
Retailer 13$1,355 AUD

12 data points across 14 retailers

9 retailers$367 AUD to $845 AUD

A
Cheapest Retailer
-
$367 AUD
$258 USD
Retailer 2
-
$379 AUD
$266 USD
View
Price last confirmed 27 days ago
B+
Retailer 3
-
$434 AUD
$305 USD
View
Retailer 4
-
$455 AUD
$320 USD
View
Price last confirmed 25 days ago
Retailer 5
-
$547 AUD
£302 GBP
View
Price last confirmed 25 days ago
Retailer 6
-
$584 AUD
$410 USD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$716 AUD
CA$699 CAD
View
Retailer 8
-
$786 AUD
$552 USD
View
Price last confirmed 27 days ago
Most Expensive
B
Riddles Jewelry
1989204854 · Oct 29
$845 AUD
$594 USD
View
8 more retailers have this diamond
Prices start from $367 AUDSave up to $478 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.

A
0.51ct Cushion
$367 AUD