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Radiant|Lab Grown|IGI

1.71ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG512231580

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

Certificate IGI LG512231580

Diamond specifications and retailer prices

From ₹1,03,496 INR
$1,090 USD
As of October 31, 2026
Save ₹4,08,635 INR (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: ₹5,12,131 INR at MOH London · As of November 1, 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 LG512231580 or 512231580. Listed at 11 retailers as of October 31, 2026, with prices from ₹1,03,496 to ₹5,12,131, a ₹4,08,635 spread on the same certified stone. MOH London lists it at ₹5,12,131. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle30.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512231580
Dimensions7.68 × 5.82 × 4.03 mm
L/W Ratio1.32
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
7.68 mm5.82 mm1.71 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512231580
Side View
Table 68.0%Crown 47.1°Girdle: ThickPavilion 30.1°Culet: NoneDepth 69.2%

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 31
Current: ₹5,12,131 INR|Low: ₹1,03,496 INR|High: ₹5,18,281 INR|Avg: ₹2,66,181 INR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 2₹1,03,496 INR
Retailer 7₹1,54,579 INR
Retailer 11₹1,68,156 INR
Retailer 12₹1,73,094 INR
Retailer 8₹1,79,361 INR
Retailer 13₹1,95,597 INR
Retailer 5₹1,97,199 INR
Retailer 3₹2,41,078 INR
Retailer 9₹2,81,812 INR
Retailer 6₹3,09,157 INR
Retailer 10₹3,36,123 INR
MOH London₹5,12,131 INR
Retailer 4₹5,13,457 INR

18 data points across 13 retailers

11 retailers₹1,03,496 INR to ₹5,12,131 INR

A
Cheapest Retailer
-
₹1,03,496 INR
$1,090 USD
B+
Retailer 2
-
₹1,54,579 INR
$1,628 USD
View
B+
Retailer 3
-
₹1,68,156 INR
$1,771 USD
View
B+
Retailer 4
-
₹1,73,094 INR
$1,823 USD
View
Final sale: no returns
Retailer 5
-
₹1,79,361 INR
$1,889 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
₹1,79,361 INR
$1,889 USD
View
B+
Retailer 7
-
₹1,95,597 INR
$2,060 USD
View
B
Retailer 8
-
₹2,81,812 INR
$2,968 USD
View
B
Retailer 9
-
₹3,09,157 INR
$3,256 USD
View
B
Retailer 10
-
₹3,36,123 INR
$3,540 USD
View
Most Expensive
B
MOH London
LG512231580 · Nov 1
₹5,12,131 INR
£4,247 GBP
View
10 more retailers have this diamond
Prices start from ₹1,03,496 INRSave up to ₹4,08,635 INR

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
₹1,03,496 INR