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Oval|Lab Grown|IGI

1.56ct H SI2 Oval Lab Grown Diamond

ID • H/SI2 • IGI LG451057308

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057308

Diamond specifications and retailer prices

From $860 USD
As of October 29, 2026
Save $3,814 USD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,674 USD at MOH London · As of October 27, 2026
View at MOH London

About this 1.56ct lab-grown oval diamond

This 1.56ct lab-grown oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057308 or 451057308. Listed at 10 retailers as of October 27, 2026, with prices from $860 to $4,674, a $3,814 spread on the same certified stone. MOH London lists it at $4,674. 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

1.56
Carat
H
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057308
Dimensions9.06 × 6.58 × 4.10 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.06 mm6.58 mm1.56 ctH / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451057308
Side View
Table 57.0%Crown 36°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 62.3%

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: Oct 29
Current: $4,674 USD|Low: $860 USD|High: $4,723 USD|Avg: $2,403 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 25, 2026
Retailer 2$860 USD
Retailer 4$1,401 USD
Retailer 6$2,015 USD
Retailer 3$2,302 USD
Retailer 5$2,708 USD
Retailer 7$3,252 USD
MOH London$4,674 USD

10 data points across 7 retailers

10 retailers$860 USD to $4,674 USD

A
Cheapest Retailer
-
$860 USD
B+
Retailer 2
-
$1,252 USD
View
B+
Retailer 3
-
$1,363 USD
View
B+
Retailer 4
-
$1,401 USD
View
Final sale: no returns
Retailer 5
-
$1,453 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,453 USD
View
B
Retailer 7
-
$2,302 USD
View
B
Retailer 8
-
$2,708 USD
View
B
Retailer 9
-
$2,723 USD
View
Most Expensive
B
MOH London
LG451057308 · Oct 27
$4,674 USD
£3,680 GBP
View
9 more retailers have this diamond
Prices start from $860 USDSave up to $3,814 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
1.56ct Oval
$860 USD