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Round|Lab Grown|IGI

1.73ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG440012283

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440012283

Diamond specifications and retailer prices

From $1,250 USD
As of October 29, 2026
Save $3,452 USD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,702 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440012283 or 440012283. Listed at 10 retailers as of October 29, 2026, with prices from $1,250 to $4,702, a $3,452 spread on the same certified stone. MOH London lists it at $4,702. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012283
Dimensions7.76 × 7.77 × 4.64 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.76 mm7.77 mm1.73 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440012283
Side View
Table 59.5%Crown 32.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.8%

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 29
Current: $4,702 USD|Low: $1,250 USD|High: $4,740 USD|Avg: $2,551 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2$1,250 USD
Retailer 4$1,536 USD
Retailer 5$1,581 USD
Retailer 7$2,241 USD
Retailer 3$2,584 USD
Retailer 6$2,972 USD
Retailer 8$3,666 USD
MOH London$4,702 USD

13 data points across 8 retailers

10 retailers$1,250 USD to $4,702 USD

A
Cheapest Retailer
-
$1,250 USD
A
Retailer 2
-
$1,412 USD
View
B+
Retailer 3
-
$1,536 USD
View
B+
Retailer 4
-
$1,581 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,638 USD
View
Retailer 6
-
$1,638 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,584 USD
View
B
Retailer 8
-
$2,972 USD
View
B
Retailer 9
-
$3,069 USD
View
Most Expensive
B
MOH London
LG440012283 · Oct 29
$4,702 USD
£3,702 GBP
View
9 more retailers have this diamond
Prices start from $1,250 USDSave up to $3,452 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
$1,250 USD