CaratHunter
Plans
Oval|Lab Grown|IGI

1.51ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG445038609

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445038609

Diamond specifications and retailer prices

From $820 USD
As of November 6, 2026
Save $2,016 USD (71%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,887 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445038609 or 445038609. Listed at 12 retailers as of November 5, 2026, with a 246% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445038609
Dimensions8.93 × 6.46 × 4.08 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
8.93 mm6.46 mm1.51 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG445038609
Side View
Table 60.5%Crown 36.7°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 63.2%

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: $4,887 USD|Low: $820 USD|High: $4,920 USD|Avg: $2,231 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
November 6, 2026
Retailer 8$820 USD
Retailer 7$1,304 USD
Retailer 12$1,419 USD
Retailer 13$1,460 USD
Retailer 9$1,513 USD
Retailer 14$1,513 USD
Retailer 3$1,685 USD
Retailer 5$2,084 USD
Retailer 2$2,148 USD
Retailer 10$2,393 USD
Retailer 4$2,820 USD
Retailer 11$2,836 USD
Retailer 6$4,331 USD
MOH London$4,887 USD

41 data points across 14 retailers

12 retailers$820 USD to $2,836 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
Retailer 5
-
$1,513 USD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$1,513 USD
View
B+
Retailer 7
-
$1,685 USD
View
B
Retailer 8
-
$2,148 USD
View
B
Retailer 9
-
$2,393 USD
View
B
Retailer 10
-
$2,820 USD
View
B
Retailer 11
-
$2,836 USD
View
Most Expensive
MOH London
LG445038609 · Oct 29
$4,887 USD
£3,848 GBP
View
Price last confirmed 8 days ago
11 more retailers have this diamond
Prices start from $820 USDSave up to $2,016 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