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 $382 USD
As of October 30, 2026
Save $1,178 USD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,861 USD 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 29, 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
Color
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: $1,861 USD|Low: $367 USD|High: $1,873 USD|Avg: $934 USD|+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$382 USD
Retailer 14$427 USD
Retailer 11$474 USD
Retailer 4$530 USD
Retailer 7$620 USD
Retailer 13$720 USD
Retailer 12$755 USD
Retailer 2$814 USD
Retailer 10$930 USD
Retailer 6$1,072 USD
Retailer 3$1,280 USD
Retailer 8$1,328 USD
Retailer 5$1,560 USD
MOH London$1,861 USD

24 data points across 14 retailers

15 retailers$382 USD to $1,560 USD

A
Cheapest Retailer
-
$382 USD
A
Retailer 2
-
$427 USD
View
Final sale: no returns
A
Retailer 3
-
$428 USD
View
A
Retailer 4
-
$474 USD
View
A
Retailer 5
-
$474 USD
View
B+
Retailer 6
-
$530 USD
View
B+
Retailer 7
-
$620 USD
View
B+
Retailer 8
-
$720 USD
View
B+
Retailer 9
-
$755 USD
View
B+
Retailer 10
-
$814 USD
ZAR 13,146 ZAR
View
B
Retailer 11
-
$930 USD
View
B
Retailer 12
-
$1,328 USD
View
B
Retailer 13
-
$1,522 USD
View
B
Retailer 14
-
$1,560 USD
View
Most Expensive
MOH London
LG508122912 · Oct 21
$1,861 USD
£1,465 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $382 USDSave up to $1,178 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
1.56ct Radiant
$382 USD