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Round|Lab Grown|IGI

1.73ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG440011478

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440011478

Diamond specifications and retailer prices

From $960 USD
As of October 30, 2026
Save $4,267 USD (82%) 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 LG440011478 or 440011478. Listed at 11 retailers as of October 29, 2026, with prices from $960 to $5,227, a $4,267 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440011478
Dimensions7.86 × 7.82 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.86 mm7.82 mm1.73 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440011478
Side View
Table 59.0%Crown 32°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.7%

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 30
Current: $5,227 USD|Low: $960 USD|High: $5,269 USD|Avg: $2,408 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$960 USD
Retailer 5$1,570 USD
Retailer 8$1,758 USD
Retailer 6$1,821 USD
Retailer 9$1,821 USD
Retailer 3$1,911 USD
Retailer 10$1,990 USD
Retailer 11$2,459 USD
Retailer 7$2,866 USD
Retailer 4$3,220 USD
MOH London$5,227 USD

16 data points across 11 retailers

11 retailers$960 USD to $5,227 USD

A
Cheapest Retailer
-
$960 USD
B+
Retailer 2
-
$1,570 USD
View
B+
Retailer 3
-
$1,708 USD
View
B+
Retailer 4
-
$1,758 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,821 USD
View
Retailer 6
-
$1,821 USD
View
Price last confirmed 18 days ago
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
LG440011478 · Oct 29
$5,227 USD
£4,116 GBP
View
10 more retailers have this diamond
Prices start from $960 USDSave up to $4,267 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
$960 USD