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Radiant|Lab Grown|IGI

1.71ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG494160365

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG494160365

Diamond specifications and retailer prices

From $1,090 USD
As of October 30, 2026
Save $4,333 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,423 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.71ct lab-grown radiant diamond

This 1.71ct lab-grown radiant 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 LG494160365 or 494160365. Listed at 10 retailers as of October 29, 2026, with prices from $1,090 to $5,423, a $4,333 spread on the same certified stone. MOH London lists it at $5,423. 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

1.71
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494160365
Dimensions8.24 × 5.98 × 4.09 mm
L/W Ratio1.38
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
8.24 mm5.98 mm1.71 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494160365
Side View
Table 62.5%Crown 41.1°Girdle: MED-STKPavilion 32.4°Culet: NoneDepth 68.4%

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: $5,423 USD|Low: $1,090 USD|High: $5,466 USD|Avg: $2,652 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$1,090 USD
Retailer 5$1,628 USD
Retailer 9$1,771 USD
Retailer 6$1,889 USD
Retailer 10$2,060 USD
Retailer 3$2,077 USD
Retailer 11$2,539 USD
Retailer 7$2,968 USD
Retailer 4$3,256 USD
Retailer 8$3,540 USD
MOH London$5,423 USD

17 data points across 11 retailers

10 retailers$1,090 USD to $5,423 USD

A
Cheapest Retailer
-
$1,090 USD
B+
Retailer 2
-
$1,628 USD
View
B+
Retailer 3
-
$1,771 USD
View
Retailer 4
-
$1,889 USD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
$1,889 USD
View
B+
Retailer 6
-
$2,060 USD
View
B
Retailer 7
-
$2,968 USD
View
B
Retailer 8
-
$3,256 USD
View
B
Retailer 9
-
$3,540 USD
View
Most Expensive
B
MOH London
LG494160365 · Oct 29
$5,423 USD
£4,270 GBP
View
9 more retailers have this diamond
Prices start from $1,090 USDSave up to $4,333 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
1.71ct Radiant
$1,090 USD