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Round|Lab Grown|IGI

1.30ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG474127291

Shape and cutting style on the report: Round brilliant

Certificate IGI LG474127291

Diamond specifications and retailer prices

From $578 USD
As of October 29, 2026
Save $2,536 USD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,114 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.3ct lab-grown round diamond

This 1.3ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474127291 or 474127291. Listed at 10 retailers as of October 26, 2026, with prices from $578 to $3,114, a $2,536 spread on the same certified stone. MOH London lists it at $3,114. 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

1.30
Carat
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474127291
Dimensions7.07 × 7.11 × 4.27 mm
L/W Ratio1.01
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
7.07 mm7.11 mm1.30 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474127291
Side View
Table 60.5%Crown 31.6°GirdlePavilion 41.5°Culet: NoneDepth 60.1%

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: $3,114 USD|Low: $462 USD|High: $3,147 USD|Avg: $1,238 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4$578 USD
Retailer 7$647 USD
Retailer 5$716 USD
Retailer 8$716 USD
Retailer 2$740 USD
Retailer 6$1,102 USD
Retailer 9$1,149 USD
Retailer 10$1,500 USD
Retailer 3$1,778 USD
MOH London$3,114 USD

14 data points across 10 retailers

10 retailers$578 USD to $3,114 USD

A
Cheapest Retailer
-
$578 USD
B+
Retailer 2
-
$647 USD
View
Final sale: no returns
B+
Retailer 3
-
$647 USD
View
Retailer 4
-
$716 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$716 USD
View
B+
Retailer 6
-
$740 USD
View
B
Retailer 7
-
$1,102 USD
View
B
Retailer 8
-
$1,778 USD
View
B
Retailer 9
-
$1,884 USD
View
Most Expensive
B
MOH London
LG474127291 · Oct 26
$3,114 USD
£2,452 GBP
View
9 more retailers have this diamond
Prices start from $578 USDSave up to $2,536 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
1.30ct Round
$578 USD