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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 $990 USD
As of October 30, 2026
Save $4,237 USD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,227 USD at MOH London · As of October 29, 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 29, 2026, with prices from $990 to $5,227, a $4,237 spread on the same certified stone. MOH London lists it at $5,227. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,227 USD|Low: $990 USD|High: $5,269 USD|Avg: $2,465 USD|+0.5%
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$990 USD
Retailer 4$1,570 USD
Retailer 7$1,757 USD
Retailer 5$1,821 USD
Retailer 10$1,911 USD
Retailer 8$1,990 USD
Retailer 9$2,459 USD
Retailer 6$2,866 USD
Retailer 3$3,220 USD
MOH London$5,227 USD

17 data points across 10 retailers

11 retailers$990 USD to $5,227 USD

A
Cheapest Retailer
-
$990 USD
B+
Retailer 2
-
$1,570 USD
View
B+
Retailer 3
-
$1,708 USD
View
B+
Retailer 4
-
$1,757 USD
View
Final sale: no returns
Retailer 5
-
$1,821 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$1,821 USD
View
B+
Retailer 7
-
$1,990 USD
View
B
Retailer 8
-
$2,866 USD
View
B
Retailer 9
-
$3,220 USD
View
B
Retailer 10
-
$3,413 USD
View
Most Expensive
B
MOH London
LG478113784 · Oct 29
$5,227 USD
£4,116 GBP
View
10 more retailers have this diamond
Prices start from $990 USDSave up to $4,237 USD

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
$990 USD