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Round|Lab Grown|IGI

1.70ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG642471180

Shape and cutting style on the report: Round brilliant

Certificate IGI LG642471180

Diamond specifications and retailer prices

From $236 USD
As of November 1, 2026
Save $937 USD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,173 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG642471180 or 642471180. Listed at 16 retailers as of October 26, 2026, with prices from $236 to $1,173, a $937 spread on the same certified stone. MOH London lists it at $1,173. 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

1.70
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG642471180
Dimensions7.76 × 7.71 × 4.68 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.76 mm7.71 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG642471180
Side View
Table 60.0%Crown 34°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.4%

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: $1,173 USD|Low: $236 USD|High: $1,186 USD|Avg: $652 USD|-1.0%
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 2, 2026
Retailer 10$236 USD
Retailer 11$293 USD
Retailer 12$461 USD
Retailer 3$495 USD
Retailer 6$537 USD
Retailer 2$547 USD
Retailer 4$552 USD
Retailer 7$584 USD
Retailer 9$845 USD
Retailer 8$944 USD
Retailer 5$1,100 USD
MOH London$1,173 USD

43 data points across 12 retailers

16 retailers$236 USD to $1,173 USD

A
Cheapest Retailer
-
$236 USD
A
Retailer 2
-
$274 USD
View
Retailer 3
-
$293 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$293 USD
View
B+
Retailer 5
-
$495 USD
View
A
Retailer 6
-
$531 USD
View
A
Retailer 7
-
$537 USD
£423 GBP
View
A
Retailer 8
-
$547 USD
£431 GBP
View
A
Retailer 9
-
$552 USD
View
B+
Retailer 10
-
$584 USD
A$898 AUD
View
Retailer 11
-
$812 USD
View
Price last confirmed 49 days ago
Retailer 12
-
$845 USD
View
Price last confirmed 14 days ago
B
Retailer 13
-
$940 USD
View
B
Retailer 14
-
$944 USD
View
B
Retailer 15
-
$1,100 USD
View
Most Expensive
B
MOH London
LG642471180 · Oct 26
$1,173 USD
£924 GBP
View
15 more retailers have this diamond
Prices start from $236 USDSave up to $937 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
1.70ct Round
$236 USD