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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 €210 EUR
$236 USD
As of November 1, 2026
Save €770 EUR (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,046 EUR 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 November 1, 2026, with a 366% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
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

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: €1,046 EUR|Low: €210 EUR|High: €1,058 EUR|Avg: €583 EUR|-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€210 EUR
Retailer 11€261 EUR
Retailer 12€411 EUR
Retailer 3€441 EUR
Retailer 5€479 EUR
Retailer 6€488 EUR
Retailer 4€492 EUR
Retailer 8€520 EUR
Retailer 2€694 EUR
Retailer 9€753 EUR
Retailer 7€981 EUR
MOH London€1,046 EUR

42 data points across 12 retailers

16 retailers€210 EUR to €981 EUR

A
Cheapest Retailer
-
€210 EUR
$236 USD
A
Retailer 2
-
€244 EUR
$274 USD
View
Retailer 3
-
€261 EUR
$293 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
€261 EUR
$293 USD
View
B+
Retailer 5
-
€441 EUR
$495 USD
View
A
Retailer 6
-
€473 EUR
$531 USD
View
A
Retailer 7
-
€479 EUR
£423 GBP
View
A
Retailer 8
-
€488 EUR
£431 GBP
View
A
Retailer 9
-
€492 EUR
$552 USD
View
B+
Retailer 10
-
€520 EUR
A$898 AUD
View
B+
Retailer 11
-
€694 EUR
$778 USD
View
Retailer 12
-
€724 EUR
$812 USD
View
Price last confirmed 50 days ago
Retailer 13
-
€753 EUR
$845 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
€838 EUR
$940 USD
View
B
Retailer 15
-
€981 EUR
$1,100 USD
View
Most Expensive
B
MOH London
LG642471180 · Oct 26
€1,046 EUR
£924 GBP
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from €210 EURSave up to €770 EUR

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
€210 EUR