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Round|Lab Grown|IGI

6.70ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG551208029

Shape and cutting style on the report: Round brilliant

Certificate IGI LG551208029

Diamond specifications and retailer prices

From $791 USD
As of October 29, 2026
Save $2,648 USD (77%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,439 USD at MOH London · As of November 1, 2026
View at MOH London

About this 6.7ct lab-grown round diamond

This 6.7ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551208029 or 551208029. Listed at 14 retailers as of October 29, 2026, with prices from $791 to $3,439, a $2,648 spread on the same certified stone. MOH London lists it at $3,439. 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

6.70
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551208029
Dimensions12.13 × 12.07 × 7.43 mm
L/W Ratio1.00
Girdle conditionFaceted
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
12.13 mm12.07 mm6.70 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551208029
Side View
Table 57.5%Crown 34.7°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.5%

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: Oct 29
Current: $3,439 USD|Low: $791 USD|High: $9,887 USD|Avg: $3,037 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
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 13$791 USD
Retailer 11$861 USD
Retailer 17$918 USD
Retailer 3$1,088 USD
Retailer 14$1,095 USD
Retailer 16$1,374 USD
Retailer 10$1,391 USD
Retailer 2$1,447 USD
Retailer 15$1,460 USD
Retailer 5$1,482 USD
Retailer 12$2,182 USD
Retailer 6$2,580 USD
Retailer 4$3,122 USD
MOH London$3,439 USD
Retailer 8$5,885 USD
Retailer 7$9,270 USD
Retailer 9$9,887 USD

5 data points across 17 retailers

14 retailers$791 USD to $3,439 USD

A
Cheapest Retailer
-
$791 USD
A
Retailer 2
-
$861 USD
View
A
Retailer 3
-
$918 USD
View
A
Retailer 4
-
$1,088 USD
HK$8,500 HKD
View
A
Retailer 5
-
$1,095 USD
View
B+
Retailer 6
-
$1,374 USD
View
A
Retailer 7
-
$1,391 USD
£1,095 GBP
View
B+
Retailer 8
-
$1,447 USD
£1,139 GBP
View
B+
Retailer 9
-
$1,460 USD
€1,390 EUR
View
B+
Retailer 10
-
$1,482 USD
View
B+
Retailer 11
-
$2,182 USD
View
B
Retailer 12
-
$2,580 USD
View
B
Retailer 13
-
$3,122 USD
View
Most Expensive
B
MOH London
LG551208029 · Nov 1
$3,439 USD
£2,708 GBP
View
13 more retailers have this diamond
Prices start from $791 USDSave up to $2,648 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
6.70ct Round
$791 USD