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Round|Lab Grown|IGI

1.71ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG436046802

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436046802

Diamond specifications and retailer prices

From $1,230 USD
As of October 29, 2026
Save $3,418 USD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,648 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.71ct lab-grown round diamond

This 1.71ct 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 LG436046802 or 436046802. Listed at 10 retailers as of October 29, 2026, with prices from $1,230 to $4,648, a $3,418 spread on the same certified stone. MOH London lists it at $4,648. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046802
Dimensions7.74 × 7.78 × 4.67 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.74 mm7.78 mm1.71 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046802
Side View
Table 60.0%Crown 31.8°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 60.2%

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: $4,648 USD|Low: $1,115 USD|High: $4,680 USD|Avg: $2,443 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 18, 2026
Retailer 3$1,230 USD
Retailer 2$1,396 USD
Retailer 5$1,562 USD
Retailer 6$1,619 USD
Retailer 8$2,218 USD
Retailer 4$2,557 USD
Retailer 7$2,938 USD
Retailer 9$3,624 USD
MOH London$4,648 USD

10 data points across 9 retailers

10 retailers$1,230 USD to $4,648 USD

A
Cheapest Retailer
-
$1,230 USD
A
Retailer 2
-
$1,396 USD
View
B+
Retailer 3
-
$1,518 USD
View
A
Retailer 4
-
$1,562 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,619 USD
View
Retailer 6
-
$1,619 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,557 USD
View
B
Retailer 8
-
$2,938 USD
View
B
Retailer 9
-
$3,035 USD
View
Most Expensive
B
MOH London
LG436046802 · Oct 29
$4,648 USD
£3,660 GBP
View
9 more retailers have this diamond
Prices start from $1,230 USDSave up to $3,418 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 Round
$1,230 USD