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Round|Lab Grown|IGI

1.73ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG492136704

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492136704

Diamond specifications and retailer prices

From $970 USD
As of October 31, 2026
Save $5,122 USD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,092 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492136704 or 492136704. Listed at 11 retailers as of October 29, 2026, with prices from $970 to $6,092, a $5,122 spread on the same certified stone. MOH London lists it at $6,092. 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
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492136704
Dimensions7.72 × 7.66 × 4.75 mm
L/W Ratio1.01
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
7.72 mm7.66 mm1.73 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492136704
Side View
Table 55.5%Crown 35.3°Girdle: MediumPavilion 40.3°Culet: NoneDepth 61.6%

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: $6,092 USD|Low: $970 USD|High: $6,142 USD|Avg: $2,839 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$970 USD
Retailer 4$1,829 USD
Retailer 7$2,048 USD
Retailer 5$2,122 USD
Retailer 10$2,248 USD
Retailer 8$2,290 USD
Retailer 9$2,817 USD
Retailer 6$3,326 USD
Retailer 3$3,569 USD
MOH London$6,092 USD

17 data points across 10 retailers

11 retailers$970 USD to $6,092 USD

A
Cheapest Retailer
-
$970 USD
B+
Retailer 2
-
$1,829 USD
View
B+
Retailer 3
-
$1,990 USD
View
B+
Retailer 4
-
$2,048 USD
View
Final sale: no returns
B
Retailer 5
-
$2,122 USD
View
Retailer 6
-
$2,122 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$2,290 USD
View
B
Retailer 8
-
$3,326 USD
View
B
Retailer 9
-
$3,569 USD
View
B
Retailer 10
-
$3,977 USD
View
Most Expensive
B
MOH London
LG492136704 · Oct 29
$6,092 USD
£4,797 GBP
View
10 more retailers have this diamond
Prices start from $970 USDSave up to $5,122 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
$970 USD