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Radiant|Lab Grown|IGI

1.56ct I VS1 Radiant Lab Grown Diamond

VG • I/VS1 • IGI LG508122912

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG508122912

Diamond specifications and retailer prices

From $544 AUD
$382 USD
As of October 30, 2026
Save $1,677 AUD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,649 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 1.56ct lab-grown radiant diamond

This 1.56ct lab-grown radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG508122912 or 508122912. Listed at 15 retailers as of October 30, 2026, with a 308% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.56
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508122912
Dimensions8.05 × 5.67 × 3.92 mm
L/W Ratio1.42
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
8.05 mm5.67 mm1.56 ctI / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508122912
Side View
Table 63.0%Crown 43.8°Girdle: Slightly ThickPavilion 34.6°Culet: NoneDepth 69.1%

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: $2,649 AUD|Low: $522 AUD|High: $2,667 AUD|Avg: $1,329 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 28, 2026
Retailer 9$544 AUD
Retailer 14$608 AUD
Retailer 11$675 AUD
Retailer 4$755 AUD
Retailer 7$883 AUD
Retailer 13$1,025 AUD
Retailer 12$1,075 AUD
Retailer 2$1,158 AUD
Retailer 10$1,324 AUD
Retailer 6$1,526 AUD
Retailer 3$1,822 AUD
Retailer 8$1,891 AUD
Retailer 5$2,221 AUD
MOH London$2,649 AUD

24 data points across 14 retailers

15 retailers$544 AUD to $2,221 AUD

A
Cheapest Retailer
-
$544 AUD
$382 USD
A
Retailer 2
-
$608 AUD
$427 USD
View
Final sale: no returns
A
Retailer 3
-
$609 AUD
$428 USD
View
A
Retailer 4
-
$675 AUD
$474 USD
View
A
Retailer 5
-
$675 AUD
$474 USD
View
B+
Retailer 6
-
$755 AUD
$530 USD
View
B+
Retailer 7
-
$883 AUD
$620 USD
View
B+
Retailer 8
-
$1,025 AUD
$720 USD
View
B+
Retailer 9
-
$1,075 AUD
$755 USD
View
B+
Retailer 10
-
$1,158 AUD
ZAR 13,146 ZAR
View
B
Retailer 11
-
$1,324 AUD
$930 USD
View
B
Retailer 12
-
$1,891 AUD
$1,328 USD
View
B
Retailer 13
-
$2,167 AUD
$1,522 USD
View
B
Retailer 14
-
$2,221 AUD
$1,560 USD
View
Most Expensive
MOH London
LG508122912 · Oct 21
$2,649 AUD
£1,465 GBP
View
Price last confirmed 10 days ago
14 more retailers have this diamond
Prices start from $544 AUDSave up to $1,677 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
1.56ct Radiant
$544 AUD