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Round|Lab Grown|IGI

1.73ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG478113784

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478113784

Diamond specifications and retailer prices

From €886 EUR
$990 USD
As of October 31, 2026
Save €3,768 EUR (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €4,654 EUR at MOH London · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478113784 or 478113784. Listed at 11 retailers as of October 31, 2026, with prices from €886 to €4,654, a €3,768 spread on the same certified stone. MOH London lists it at €4,654. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478113784
Dimensions7.77 × 7.74 × 4.67 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 mm7.74 mm1.73 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478113784
Side View
Table 57.0%Crown 33.4°Girdle: MediumPavilion 40.1°Culet: NoneDepth 60.1%

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 31
Current: €4,654 EUR|Low: €886 EUR|High: €4,716 EUR|Avg: €2,202 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2€886 EUR
Retailer 4€1,405 EUR
Retailer 7€1,573 EUR
Retailer 5€1,630 EUR
Retailer 10€1,711 EUR
Retailer 8€1,781 EUR
Retailer 9€2,201 EUR
Retailer 6€2,565 EUR
Retailer 3€2,882 EUR
MOH London€4,654 EUR

18 data points across 10 retailers

11 retailers€886 EUR to €4,654 EUR

A
Cheapest Retailer
-
€886 EUR
$990 USD
B+
Retailer 2
-
€1,405 EUR
$1,570 USD
View
B+
Retailer 3
-
€1,529 EUR
$1,708 USD
View
B+
Retailer 4
-
€1,573 EUR
$1,757 USD
View
Final sale: no returns
Retailer 5
-
€1,630 EUR
$1,821 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
€1,630 EUR
$1,821 USD
View
B+
Retailer 7
-
€1,781 EUR
$1,990 USD
View
B
Retailer 8
-
€2,565 EUR
$2,866 USD
View
B
Retailer 9
-
€2,882 EUR
$3,220 USD
View
B
Retailer 10
-
€3,055 EUR
$3,413 USD
View
Most Expensive
B
MOH London
LG478113784 · Nov 1
€4,654 EUR
£4,094 GBP
View
10 more retailers have this diamond
Prices start from €886 EURSave up to €3,768 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
€886 EUR