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Round|Lab Grown|IGI

1.35ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG436073378

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436073378

Diamond specifications and retailer prices

From $680 USD
As of October 29, 2026
Save $2,649 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,329 USD at MOH London · As of October 25, 2026
View at MOH London

About this 1.35ct lab-grown round diamond

This 1.35ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073378 or 436073378. Listed at 10 retailers as of October 25, 2026, with prices from $680 to $3,329, a $2,649 spread on the same certified stone. MOH London lists it at $3,329. 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

1.35
Carat
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073378
Dimensions7.13 × 7.09 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.13 mm7.09 mm1.35 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436073378
Side View
Table 55.5%Crown 34.1°Girdle: MediumPavilion 40.4°Culet: NoneDepth 61.4%

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 29
Current: $3,329 USD|Low: $653 USD|High: $3,368 USD|Avg: $1,410 USD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 5$680 USD
Retailer 8$740 USD
Retailer 10$762 USD
Retailer 2$780 USD
Retailer 6$789 USD
Retailer 11$1,268 USD
Retailer 7$1,284 USD
Retailer 3$1,765 USD
Retailer 4$2,015 USD
Retailer 9$2,218 USD
MOH London$3,329 USD

16 data points across 11 retailers

10 retailers$680 USD to $3,329 USD

A
Cheapest Retailer
-
$680 USD
A
Retailer 2
-
$740 USD
View
A
Retailer 3
-
$762 USD
View
Final sale: no returns
A
Retailer 4
-
$780 USD
View
A
Retailer 5
-
$789 USD
View
Retailer 6
-
$789 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$1,284 USD
View
B
Retailer 8
-
$2,015 USD
View
B
Retailer 9
-
$2,218 USD
View
Most Expensive
B
MOH London
LG436073378 · Oct 25
$3,329 USD
£2,621 GBP
View
9 more retailers have this diamond
Prices start from $680 USDSave up to $2,649 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
1.35ct Round
$680 USD