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1.35ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG436074626

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436074626

Diamond specifications and retailer prices

From $639 USD
As of November 1, 2026
Save $2,485 USD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,124 USD at MOH London · As of November 1, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436074626 or 436074626. Listed at 12 retailers as of November 1, 2026, with prices from $639 to $3,124, a $2,485 spread on the same certified stone. MOH London lists it at $3,124. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436074626
Dimensions7.05 × 7.03 × 4.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.05 mm7.03 mm1.35 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436074626
Side View
Table 56.5%Crown 36.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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: Nov 1
Current: $3,124 USD|Low: $512 USD|High: $3,162 USD|Avg: $1,264 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7$639 USD
Retailer 10$716 USD
Retailer 8$742 USD
Retailer 11$742 USD
Retailer 2$770 USD
Retailer 12$818 USD
Retailer 5$920 USD
Retailer 3$1,209 USD
Retailer 9$1,213 USD
Retailer 6$1,894 USD
Retailer 4$2,123 USD
MOH London$3,124 USD

21 data points across 12 retailers

12 retailers$639 USD to $3,124 USD

A
Cheapest Retailer
-
$639 USD
A
Retailer 2
-
$696 USD
View
B+
Retailer 3
-
$716 USD
View
Final sale: no returns
Retailer 4
-
$742 USD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$742 USD
View
B+
Retailer 6
-
$770 USD
View
B+
Retailer 7
-
$818 USD
View
B+
Retailer 8
-
$920 USD
View
B
Retailer 9
-
$1,213 USD
View
B
Retailer 10
-
$1,894 USD
View
B
Retailer 11
-
$2,085 USD
View
Most Expensive
B
MOH London
LG436074626 · Nov 1
$3,124 USD
£2,460 GBP
View
11 more retailers have this diamond
Prices start from $639 USDSave up to $2,485 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
$639 USD