Round|Lab Grown|IGI

1.29ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG816613930

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816613930

Diamond specifications and retailer prices

From $174 USD
As of November 1, 2026
Save $836 USD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,010 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816613930 or 816613930. Listed at 15 retailers as of November 1, 2026, with prices from $174 to $1,010, a $836 spread on the same certified stone. MOH London lists it at $1,010. 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

1.29
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816613930
Dimensions7.00 × 6.95 × 4.27 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
7.00 mm6.95 mm1.29 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816613930
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
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: $1,010 USD|Low: $174 USD|High: $1,021 USD|Avg: $484 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$174 USD
Retailer 9$216 USD
Retailer 3$368 USD
Retailer 5$382 USD
Retailer 10$384 USD
Retailer 6$475 USD
Retailer 4$481 USD
Retailer 2$550 USD
Retailer 8$590 USD
MOH London$1,010 USD

44 data points across 10 retailers

15 retailers$174 USD to $1,010 USD

A
Cheapest Retailer
-
$174 USD
A
Retailer 2
-
$202 USD
View
Retailer 3
-
$216 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$216 USD
View
A
Retailer 5
-
$368 USD
€350 EUR
View
A
Retailer 6
-
$382 USD
£301 GBP
View
B+
Retailer 7
-
$384 USD
View
B+
Retailer 8
-
$462 USD
View
A
Retailer 9
-
$475 USD
View
A
Retailer 10
-
$481 USD
£378 GBP
View
B+
Retailer 11
-
$550 USD
View
B+
Retailer 12
-
$590 USD
View
B
Retailer 13
-
$694 USD
View
B+
Retailer 14
-
$748 USD
View
Most Expensive
B
MOH London
LG816613930 · Nov 1
$1,010 USD
£795 GBP
View
14 more retailers have this diamond
Prices start from $174 USDSave up to $836 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
1.29ct Round
$174 USD