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Oval|Lab Grown|IGI

1.73ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG451057270

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057270

Diamond specifications and retailer prices

From €850 EUR
$950 USD
As of October 30, 2026
Save €3,430 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,280 EUR at MOH London · As of October 27, 2026
View at MOH London

About this 1.73ct lab-grown oval diamond

This 1.73ct lab-grown oval 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 LG451057270 or 451057270. Listed at 12 retailers as of October 27, 2026, with prices from €850 to €4,280, a €3,430 spread on the same certified stone. MOH London lists it at €4,280. 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 angle33.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057270
Dimensions9.43 × 6.96 × 4.18 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.43 mm6.96 mm1.73 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057270
Side View
Table 59.0%Crown 33.8°Girdle: MED-STKPavilion 40.4°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 30
Current: €4,280 EUR|Low: €850 EUR|High: €4,327 EUR|Avg: €1,977 EUR|+0.1%
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
Retailer 14
October 30, 2026
Retailer 2€850 EUR
Retailer 8€1,147 EUR
Retailer 12€1,248 EUR
Retailer 13€1,284 EUR
Retailer 9€1,330 EUR
Retailer 14€1,330 EUR
Retailer 3€1,486 EUR
Retailer 7€1,826 EUR
Retailer 5€1,846 EUR
Retailer 10€2,106 EUR
Retailer 4€2,479 EUR
Retailer 11€2,494 EUR
Retailer 6€3,809 EUR
MOH London€4,280 EUR

37 data points across 14 retailers

12 retailers€850 EUR to €4,280 EUR

A
Cheapest Retailer
-
€850 EUR
$950 USD
A
Retailer 2
-
€1,147 EUR
$1,281 USD
View
A
Retailer 3
-
€1,248 EUR
$1,394 USD
View
A
Retailer 4
-
€1,284 EUR
$1,435 USD
View
Final sale: no returns
Retailer 5
-
€1,330 EUR
$1,486 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
€1,330 EUR
$1,486 USD
View
B+
Retailer 7
-
€1,486 EUR
$1,660 USD
View
B+
Retailer 8
-
€1,826 EUR
£1,606 GBP
View
B+
Retailer 9
-
€2,106 EUR
$2,353 USD
View
B
Retailer 10
-
€2,479 EUR
$2,770 USD
View
B
Retailer 11
-
€2,494 EUR
$2,786 USD
View
Most Expensive
B
MOH London
LG451057270 · Oct 27
€4,280 EUR
£3,765 GBP
View
11 more retailers have this diamond
Prices start from €850 EURSave up to €3,430 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 Oval
€850 EUR