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Round|Lab Grown|IGI

1.73ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG492133925

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492133925

Diamond specifications and retailer prices

From €877 EUR
$980 USD
As of October 31, 2026
Save €3,581 EUR (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €4,458 EUR at MOH London · As of October 27, 2026
View at MOH London

About this 1.73ct lab-grown round diamond

This 1.73ct 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 LG492133925 or 492133925. Listed at 11 retailers as of October 27, 2026, with prices from €877 to €4,458, a €3,581 spread on the same certified stone. MOH London lists it at €4,458. 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

1.73
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492133925
Dimensions7.77 × 7.79 × 4.68 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
7.77 mm7.79 mm1.73 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492133925
Side View
Table 59.0%Crown 33.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

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 31
Current: €4,458 EUR|Low: €877 EUR|High: €4,506 EUR|Avg: €1,972 EUR|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2€877 EUR
Retailer 3€1,195 EUR
Retailer 6€1,338 EUR
Retailer 4€1,386 EUR
Retailer 7€1,386 EUR
Retailer 8€1,540 EUR
Retailer 10€1,911 EUR
Retailer 5€2,191 EUR
Retailer 9€2,583 EUR
MOH London€4,458 EUR

11 data points across 10 retailers

11 retailers€877 EUR to €4,458 EUR

A
Cheapest Retailer
-
€877 EUR
$980 USD
B+
Retailer 2
-
€1,195 EUR
$1,335 USD
View
B+
Retailer 3
-
€1,300 EUR
$1,452 USD
View
B+
Retailer 4
-
€1,338 EUR
$1,495 USD
View
Final sale: no returns
Retailer 5
-
€1,386 EUR
$1,548 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,386 EUR
$1,548 USD
View
B+
Retailer 7
-
€1,540 EUR
$1,720 USD
View
B
Retailer 8
-
€2,191 EUR
$2,448 USD
View
B
Retailer 9
-
€2,583 EUR
$2,886 USD
View
B
Retailer 10
-
€2,598 EUR
$2,902 USD
View
Most Expensive
B
MOH London
LG492133925 · Oct 27
€4,458 EUR
£3,922 GBP
View
10 more retailers have this diamond
Prices start from €877 EURSave up to €3,581 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
1.73ct Round
€877 EUR