Round|Lab Grown|IGI

1.05ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG818686964

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686964

Diamond specifications and retailer prices

From $139 USD
As of November 5, 2026
Save $665 USD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $804 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686964 or 818686964. Listed at 13 retailers as of November 4, 2026, with prices from $139 to $804, a $665 spread on the same certified stone. MOH London lists it at $804. 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

1.05
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686964
Dimensions6.53 × 6.58 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.53 mm6.58 mm1.05 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686964
Side View
Table 57.0%Crown 34.9°Girdle: MediumPavilion 40.3°Culet: NoneDepth 60.6%

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 5
Current: $804 USD|Low: $139 USD|High: $852 USD|Avg: $414 USD|-4.7%
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 6, 2026
Retailer 9$139 USD
Retailer 8$161 USD
Retailer 4$172 USD
Retailer 2$288 USD
Retailer 6$302 USD
Retailer 10$319 USD
Retailer 11$322 USD
Retailer 5$410 USD
Retailer 7$437 USD
Retailer 3$554 USD
Retailer 12$609 USD
MOH London$804 USD

45 data points across 12 retailers

13 retailers$139 USD to $804 USD

A
Cheapest Retailer
-
$139 USD
A
Retailer 2
-
$161 USD
View
A
Retailer 3
-
$172 USD
View
Retailer 4
-
$180 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$288 USD
View
A
Retailer 6
-
$302 USD
View
A
Retailer 7
-
$319 USD
View
A
Retailer 8
-
$322 USD
View
B+
Retailer 9
-
$410 USD
View
B+
Retailer 10
-
$437 USD
View
B
Retailer 11
-
$554 USD
View
B
Retailer 12
-
$609 USD
View
Most Expensive
B
MOH London
LG818686964 · Nov 4
$804 USD
£633 GBP
View
12 more retailers have this diamond
Prices start from $139 USDSave up to $665 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
1.05ct Round
$139 USD