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Round|Lab Grown|IGI

1.51ct J SI1 Round Lab Grown Diamond

VG • J/SI1 • IGI LG442067251

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442067251

Diamond specifications and retailer prices

From $850 USD
As of October 31, 2026
Save $3,529 USD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,379 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG442067251 or 442067251. Listed at 11 retailers as of October 29, 2026, with prices from $850 to $4,379, a $3,529 spread on the same certified stone. MOH London lists it at $4,379. 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
J
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442067251
Dimensions7.26 × 7.22 × 4.63 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.26 mm7.22 mm1.51 ctJ / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442067251
Side View
Table 56.5%Crown 36°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 64.0%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $4,379 USD|Low: $850 USD|High: $4,413 USD|Avg: $1,970 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$850 USD
Retailer 3$1,169 USD
Retailer 6$1,309 USD
Retailer 4$1,356 USD
Retailer 10$1,476 USD
Retailer 7$1,530 USD
Retailer 9$1,926 USD
Retailer 5$2,153 USD
Retailer 8$2,671 USD
MOH London$4,379 USD

14 data points across 10 retailers

11 retailers$850 USD to $4,379 USD

A
Cheapest Retailer
-
$850 USD
B+
Retailer 2
-
$1,169 USD
View
B+
Retailer 3
-
$1,271 USD
View
B+
Retailer 4
-
$1,309 USD
View
Final sale: no returns
Retailer 5
-
$1,356 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$1,356 USD
View
B
Retailer 7
-
$1,530 USD
View
B
Retailer 8
-
$2,153 USD
View
B
Retailer 9
-
$2,541 USD
View
B
Retailer 10
-
$2,671 USD
View
Most Expensive
B
MOH London
LG442067251 · Oct 29
$4,379 USD
£3,448 GBP
View
10 more retailers have this diamond
Prices start from $850 USDSave up to $3,529 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 Round
$850 USD