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Oval|Lab Grown|IGI

1.51ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG425067893

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG425067893

Diamond specifications and retailer prices

From $820 USD
As of November 6, 2026
Save $4,028 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,848 USD at MOH London · As of November 5, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425067893 or 425067893. Listed at 11 retailers as of November 5, 2026, with prices from $820 to $4,848, a $4,028 spread on the same certified stone. MOH London lists it at $4,848. 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
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067893
Dimensions8.72 × 6.53 × 4.17 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.72 mm6.53 mm1.51 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067893
Side View
Table 57.5%Crown 36.2°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 63.9%

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: Nov 6
Current: $4,848 USD|Low: $820 USD|High: $4,926 USD|Avg: $2,294 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 5$820 USD
Retailer 2$1,304 USD
Retailer 9$1,419 USD
Retailer 10$1,460 USD
Retailer 6$1,513 USD
Retailer 11$1,685 USD
Retailer 3$2,084 USD
Retailer 7$2,393 USD
Retailer 12$2,820 USD
Retailer 8$2,836 USD
Retailer 4$4,331 USD
MOH London$4,848 USD

14 data points across 12 retailers

11 retailers$820 USD to $4,848 USD

A
Cheapest Retailer
-
$820 USD
B+
Retailer 2
-
$1,304 USD
View
B+
Retailer 3
-
$1,419 USD
View
B+
Retailer 4
-
$1,460 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,513 USD
View
Retailer 6
-
$1,513 USD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$1,685 USD
View
B
Retailer 8
-
$2,393 USD
View
B
Retailer 9
-
$2,820 USD
View
B
Retailer 10
-
$2,836 USD
View
Most Expensive
B
MOH London
LG425067893 · Nov 5
$4,848 USD
£3,817 GBP
View
10 more retailers have this diamond
Prices start from $820 USDSave up to $4,028 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
$820 USD