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Oval|Lab Grown|IGI

1.51ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG445038606

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445038606

Diamond specifications and retailer prices

From $840 USD
As of October 31, 2026
Save $3,990 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,830 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445038606 or 445038606. Listed at 11 retailers as of October 29, 2026, with prices from $840 to $4,830, a $3,990 spread on the same certified stone. MOH London lists it at $4,830. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.5°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445038606
Dimensions9.32 × 6.51 × 4.03 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.32 mm6.51 mm1.51 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG445038606
Side View
Table 56.0%Crown 33.5°Girdle: THN-STKPavilion 41.3°Culet: NoneDepth 61.9%

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: $4,830 USD|Low: $840 USD|High: $4,868 USD|Avg: $2,502 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
October 30, 2026
Retailer 2$840 USD
Retailer 5$1,450 USD
Retailer 9$1,578 USD
Retailer 10$1,624 USD
Retailer 6$1,682 USD
Retailer 11$1,855 USD
Retailer 3$2,286 USD
Retailer 7$2,653 USD
Retailer 12$3,053 USD
Retailer 8$3,153 USD
Retailer 4$4,816 USD
MOH London$4,830 USD

16 data points across 12 retailers

11 retailers$840 USD to $4,830 USD

A
Cheapest Retailer
-
$840 USD
B+
Retailer 2
-
$1,450 USD
View
B+
Retailer 3
-
$1,578 USD
View
B+
Retailer 4
-
$1,624 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,682 USD
View
Retailer 6
-
$1,682 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
$1,855 USD
View
B
Retailer 8
-
$2,653 USD
View
B
Retailer 9
-
$3,053 USD
View
B
Retailer 10
-
$3,153 USD
View
Most Expensive
B
MOH London
LG445038606 · Oct 29
$4,830 USD
£3,803 GBP
View
10 more retailers have this diamond
Prices start from $840 USDSave up to $3,990 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 Oval
$840 USD