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Round|Lab Grown|IGI

1.70ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG757539546

Shape and cutting style on the report: Round brilliant

Certificate IGI LG757539546

Diamond specifications and retailer prices

From $363 USD
As of November 1, 2026
Save $844 USD (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,207 USD at MOH London · As of October 29, 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 LG757539546 or 757539546. Listed at 8 retailers as of October 29, 2026, with prices from $363 to $1,207, a $844 spread on the same certified stone. MOH London lists it at $1,207. 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 angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757539546
Dimensions7.71 × 7.67 × 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
7.71 mm7.67 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757539546
Side View
Table 55.0%Crown 32.9°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,207 USD|Low: $363 USD|High: $1,214 USD|Avg: $673 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4$363 USD
Retailer 8$397 USD
Retailer 7$408 USD
Retailer 5$533 USD
Retailer 2$566 USD
Retailer 3$820 USD
Retailer 6$1,134 USD
MOH London$1,207 USD

34 data points across 8 retailers

8 retailers$363 USD to $1,207 USD

B+
Cheapest Retailer
-
$363 USD
Retailer 2
-
$397 USD
HK$3,100 HKD
View
Price last confirmed 58 days ago
A
Retailer 3
-
$408 USD
View
A
Retailer 4
-
$533 USD
View
A
Retailer 5
-
$566 USD
£446 GBP
View
Retailer 6
-
$820 USD
View
Price last confirmed 11 days ago
B
Retailer 7
-
$1,134 USD
View
Most Expensive
B
MOH London
LG757539546 · Oct 29
$1,207 USD
£950 GBP
View
7 more retailers have this diamond
Prices start from $363 USDSave up to $844 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
$363 USD