Radiant|Lab Grown|IGI

1.51ct F SI1 Radiant Lab Grown Diamond

VG • F/SI1 • IGI LG620417160

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

Certificate IGI LG620417160

Diamond specifications and retailer prices

From $183 USD
As of November 6, 2026
Save $875 USD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,058 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG620417160 or 620417160. Listed at 16 retailers as of November 5, 2026, with prices from $183 to $1,058, a $875 spread on the same certified stone. MOH London lists it at $1,058. 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

1.51
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.8°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620417160
Dimensions7.92 × 5.65 × 3.94 mm
L/W Ratio1.40
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
7.92 mm5.65 mm1.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG620417160
Side View
Table 63.0%Crown 38.8°Girdle: STK-THKPavilion 36°Culet: NoneDepth 69.7%

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: Nov 6
Current: $1,058 USD|Low: $176 USD|High: $1,080 USD|Avg: $531 USD|-1.4%
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
Retailer 15
November 6, 2026
Retailer 3$183 USD
Retailer 7$205 USD
Retailer 10$212 USD
Retailer 5$227 USD
Retailer 6$230 USD
Retailer 4$399 USD
Retailer 8$406 USD
Retailer 2$418 USD
Retailer 14$457 USD
Retailer 15$486 USD
Retailer 9$730 USD
Retailer 11$730 USD
Retailer 13$771 USD
Retailer 12$1,020 USD
MOH London$1,058 USD

44 data points across 15 retailers

16 retailers$183 USD to $1,058 USD

A
Cheapest Retailer
-
$183 USD
A
Retailer 2
-
$205 USD
View
Final sale: no returns
A
Retailer 3
-
$212 USD
View
A
Retailer 4
-
$227 USD
View
Retailer 5
-
$230 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$399 USD
View
B+
Retailer 7
-
$406 USD
View
B+
Retailer 8
-
$418 USD
View
B+
Retailer 9
-
$457 USD
View
B+
Retailer 10
-
$486 USD
View
B+
Retailer 11
-
$730 USD
View
B
Retailer 12
-
$730 USD
View
B
Retailer 13
-
$757 USD
View
B
Retailer 14
-
$771 USD
View
B
Retailer 15
-
$1,020 USD
View
Most Expensive
B
MOH London
LG620417160 · Nov 5
$1,058 USD
£833 GBP
View
15 more retailers have this diamond
Prices start from $183 USDSave up to $875 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
1.51ct Radiant
$183 USD