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Round|Lab Grown|IGI

1.70ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG478113381

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478113381

Diamond specifications and retailer prices

From €841 EUR
$940 USD
As of October 30, 2026
Save €3,115 EUR (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €3,956 EUR at MOH London · As of October 27, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478113381 or 478113381. Listed at 10 retailers as of October 27, 2026, with prices from €841 to €3,956, a €3,115 spread on the same certified stone. MOH London lists it at €3,956. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478113381
Dimensions7.73 × 7.64 × 4.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
7.73 mm7.64 mm1.70 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478113381
Side View
Table 61.0%Crown 31.5°Girdle: MED-STKPavilion 41.7°Culet: NoneDepth 61.0%

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 30
Current: €3,956 EUR|Low: €841 EUR|High: €4,004 EUR|Avg: €1,810 EUR|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2€841 EUR
Retailer 5€1,060 EUR
Retailer 8€1,153 EUR
Retailer 10€1,187 EUR
Retailer 6€1,230 EUR
Retailer 3€1,330 EUR
Retailer 12€1,750 EUR
Retailer 7€1,950 EUR
Retailer 9€2,305 EUR
Retailer 11€2,423 EUR
Retailer 4€2,750 EUR
MOH London€3,956 EUR

16 data points across 12 retailers

10 retailers€841 EUR to €3,956 EUR

A
Cheapest Retailer
-
€841 EUR
$940 USD
B+
Retailer 2
-
€1,060 EUR
$1,184 USD
View
B+
Retailer 3
-
€1,153 EUR
$1,288 USD
View
B+
Retailer 4
-
€1,187 EUR
$1,326 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,230 EUR
$1,374 USD
View
Retailer 6
-
€1,230 EUR
$1,374 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
€1,950 EUR
$2,179 USD
View
B
Retailer 8
-
€2,305 EUR
$2,575 USD
View
B
Retailer 9
-
€2,423 EUR
$2,707 USD
View
Most Expensive
B
MOH London
LG478113381 · Oct 27
€3,956 EUR
£3,480 GBP
View
9 more retailers have this diamond
Prices start from €841 EURSave up to €3,115 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
€841 EUR