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Round|Lab Grown|IGI

1.70ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG451055404

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055404

Diamond specifications and retailer prices

From €850 EUR
$950 USD
As of October 30, 2026
Save €3,286 EUR (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €4,137 EUR 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055404 or 451055404. Listed at 10 retailers as of October 29, 2026, with prices from €850 to €4,137, a €3,286 spread on the same certified stone. MOH London lists it at €4,137. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055404
Dimensions7.82 × 7.83 × 4.58 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.82 mm7.83 mm1.70 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055404
Side View
Table 60.0%Crown 32°GirdlePavilion 40.6°Culet: NoneDepth 58.6%

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: Oct 30
Current: €4,137 EUR|Low: €850 EUR|High: €4,164 EUR|Avg: €2,096 EUR|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2€850 EUR
Retailer 4€1,242 EUR
Retailer 7€1,352 EUR
Retailer 9€1,391 EUR
Retailer 5€1,441 EUR
Retailer 11€1,975 EUR
Retailer 6€2,275 EUR
Retailer 10€2,615 EUR
Retailer 8€2,700 EUR
Retailer 3€3,226 EUR
MOH London€4,137 EUR

13 data points across 11 retailers

10 retailers€850 EUR to €4,137 EUR

A
Cheapest Retailer
-
€850 EUR
$950 USD
B+
Retailer 2
-
€1,242 EUR
$1,388 USD
View
B+
Retailer 3
-
€1,352 EUR
$1,510 USD
View
B+
Retailer 4
-
€1,391 EUR
$1,554 USD
View
Final sale: no returns
Retailer 5
-
€1,441 EUR
$1,610 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,441 EUR
$1,610 USD
View
B
Retailer 7
-
€2,275 EUR
$2,542 USD
View
B
Retailer 8
-
€2,615 EUR
$2,921 USD
View
B
Retailer 9
-
€2,700 EUR
$3,017 USD
View
Most Expensive
B
MOH London
LG451055404 · Oct 29
€4,137 EUR
£3,639 GBP
View
9 more retailers have this diamond
Prices start from €850 EURSave up to €3,286 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
€850 EUR