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Oval|Lab Grown|IGI

1.71ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG447001992

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447001992

Diamond specifications and retailer prices

From $850 USD
As of October 29, 2026
Save $3,492 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,342 USD at MOH London · As of October 27, 2026
View at MOH London

About this 1.71ct lab-grown oval diamond

This 1.71ct lab-grown oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447001992 or 447001992. Listed at 10 retailers as of October 27, 2026, with prices from $850 to $4,342, a $3,492 spread on the same certified stone. MOH London lists it at $4,342. 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
J
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001992
Dimensions9.23 × 6.82 × 4.21 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.23 mm6.82 mm1.71 ctJ / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447001992
Side View
Table 59.5%Crown 35.4°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.7%

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 29
Current: $4,342 USD|Low: $850 USD|High: $4,389 USD|Avg: $2,270 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 25, 2026
Retailer 2$850 USD
Retailer 4$1,302 USD
Retailer 6$1,927 USD
Retailer 3$2,144 USD
Retailer 5$2,660 USD
Retailer 7$3,021 USD
MOH London$4,342 USD

10 data points across 7 retailers

10 retailers$850 USD to $4,342 USD

A
Cheapest Retailer
-
$850 USD
B+
Retailer 2
-
$1,164 USD
View
B+
Retailer 3
-
$1,266 USD
View
B+
Retailer 4
-
$1,302 USD
View
Final sale: no returns
Retailer 5
-
$1,350 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,350 USD
View
B
Retailer 7
-
$2,144 USD
View
B
Retailer 8
-
$2,530 USD
View
B
Retailer 9
-
$2,660 USD
View
Most Expensive
B
MOH London
LG447001992 · Oct 27
$4,342 USD
£3,419 GBP
View
9 more retailers have this diamond
Prices start from $850 USDSave up to $3,492 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 Oval
$850 USD