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Oval|Lab Grown|IGI

1.56ct I SI2 Oval Lab Grown Diamond

ID • I/SI2 • IGI LG436073687

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436073687

Diamond specifications and retailer prices

From $820 USD
As of October 29, 2026
Save $3,520 USD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,340 USD at MOH London · As of October 29, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073687 or 436073687. Listed at 10 retailers as of October 29, 2026, with prices from $820 to $4,340, a $3,520 spread on the same certified stone. MOH London lists it at $4,340. 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
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073687
Dimensions9.21 × 6.47 × 4.08 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.21 mm6.47 mm1.56 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436073687
Side View
Table 57.0%Crown 33.8°GirdlePavilion 41.2°Culet: NoneDepth 63.1%

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: $4,340 USD|Low: $820 USD|High: $4,374 USD|Avg: $2,152 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 3$820 USD
Retailer 2$1,158 USD
Retailer 6$1,296 USD
Retailer 4$1,343 USD
Retailer 8$1,913 USD
Retailer 5$2,135 USD
Retailer 7$2,647 USD
Retailer 9$3,008 USD
MOH London$4,340 USD

14 data points across 9 retailers

10 retailers$820 USD to $4,340 USD

A
Cheapest Retailer
-
$820 USD
B+
Retailer 2
-
$1,158 USD
View
B+
Retailer 3
-
$1,260 USD
View
B+
Retailer 4
-
$1,296 USD
View
Final sale: no returns
Retailer 5
-
$1,343 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,343 USD
View
B
Retailer 7
-
$2,135 USD
View
B
Retailer 8
-
$2,518 USD
View
B
Retailer 9
-
$2,647 USD
View
Most Expensive
B
MOH London
LG436073687 · Oct 29
$4,340 USD
£3,417 GBP
View
9 more retailers have this diamond
Prices start from $820 USDSave up to $3,520 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
$820 USD