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Round|Lab Grown|IGI

1.35ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG689589510

Shape and cutting style on the report: Round brilliant

Certificate IGI LG689589510

Diamond specifications and retailer prices

From $222 USD
As of October 29, 2026
Save $885 USD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,107 USD at MOH London · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG689589510 or 689589510. Listed at 16 retailers as of October 29, 2026, with prices from $222 to $1,107, a $885 spread on the same certified stone. MOH London lists it at $1,107. 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
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689589510
Dimensions7.11 × 7.08 × 4.35 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.11 mm7.08 mm1.35 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689589510
Side View
Table 57.0%Crown 34.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.3%

Caratlytics Score

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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: $1,107 USD|Low: $213 USD|High: $1,115 USD|Avg: $591 USD|+0.6%
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
October 29, 2026
Retailer 13$222 USD
Retailer 4$257 USD
Retailer 14$275 USD
Retailer 9$370 USD
Retailer 8$456 USD
Retailer 2$510 USD
Retailer 3$522 USD
Retailer 7$538 USD
Retailer 11$545 USD
Retailer 10$558 USD
Retailer 5$883 USD
Retailer 12$887 USD
Retailer 6$1,100 USD
MOH London$1,107 USD

42 data points across 14 retailers

16 retailers$222 USD to $1,107 USD

A
Cheapest Retailer
-
$222 USD
A
Retailer 2
-
$257 USD
View
A
Retailer 3
-
$275 USD
View
A
Retailer 4
-
$275 USD
View
B+
Retailer 5
-
$370 USD
View
A
Retailer 6
-
$456 USD
€434 EUR
View
B+
Retailer 7
-
$464 USD
View
B+
Retailer 8
-
$510 USD
£402 GBP
View
B+
Retailer 9
-
$522 USD
View
B+
Retailer 10
-
$538 USD
£424 GBP
View
B+
Retailer 11
-
$545 USD
View
B+
Retailer 12
-
$550 USD
View
Price last confirmed 15 days ago
B+
Retailer 13
-
$558 USD
A$858 AUD
View
B
Retailer 14
-
$883 USD
View
B
Retailer 15
-
$887 USD
View
Most Expensive
B
MOH London
LG689589510 · Oct 29
$1,107 USD
£872 GBP
View
15 more retailers have this diamond
Prices start from $222 USDSave up to $885 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
$222 USD