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Round|Lab Grown|IGI

1.70ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG480150391

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480150391

Diamond specifications and retailer prices

From €856 EUR
$960 USD
As of November 1, 2026
Save €3,505 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,361 EUR at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG480150391 or 480150391. Listed at 12 retailers as of November 1, 2026, with prices from €856 to €4,361, a €3,505 spread on the same certified stone. MOH London lists it at €4,361. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480150391
Dimensions7.84 × 7.86 × 4.56 mm
L/W Ratio1.00
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
7.84 mm7.86 mm1.70 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG480150391
Side View
Table 59.0%Crown 32°Girdle: THN-MEDPavilion 40.1°Culet: NoneDepth 58.2%

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: Nov 1
Current: €4,361 EUR|Low: €856 EUR|High: €4,413 EUR|Avg: €1,851 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 6€856 EUR
Retailer 8€1,170 EUR
Retailer 12€1,273 EUR
Retailer 11€1,311 EUR
Retailer 3€1,357 EUR
Retailer 9€1,357 EUR
Retailer 7€1,511 EUR
Retailer 2€1,776 EUR
Retailer 5€1,875 EUR
Retailer 10€2,147 EUR
Retailer 4€2,529 EUR
Retailer 13€2,544 EUR
MOH London€4,361 EUR

25 data points across 13 retailers

12 retailers€856 EUR to €4,361 EUR

A
Cheapest Retailer
-
€856 EUR
$960 USD
B+
Retailer 2
-
€1,170 EUR
$1,312 USD
View
B+
Retailer 3
-
€1,273 EUR
$1,428 USD
View
B+
Retailer 4
-
€1,311 EUR
$1,470 USD
View
Final sale: no returns
Retailer 5
-
€1,357 EUR
$1,522 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
€1,357 EUR
$1,522 USD
View
B+
Retailer 7
-
€1,511 EUR
$1,695 USD
View
B+
Retailer 8
-
€1,776 EUR
£1,569 GBP
View
B
Retailer 9
-
€2,147 EUR
$2,408 USD
View
B
Retailer 10
-
€2,529 EUR
$2,837 USD
View
B
Retailer 11
-
€2,544 EUR
$2,853 USD
View
Most Expensive
B
MOH London
LG480150391 · Nov 1
€4,361 EUR
£3,851 GBP
View
11 more retailers have this diamond
Prices start from €856 EURSave up to €3,505 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
€856 EUR