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Oval|Lab Grown|IGI

1.71ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG447000120

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447000120

Diamond specifications and retailer prices

From $950 USD
As of October 31, 2026
Save $4,478 USD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,428 USD at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447000120 or 447000120. Listed at 11 retailers as of October 31, 2026, with prices from $950 to $5,428, a $4,478 spread on the same certified stone. MOH London lists it at $5,428. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447000120
Dimensions9.13 × 6.84 × 4.27 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.13 mm6.84 mm1.71 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG447000120
Side View
Table 59.5%Crown 36.1°Girdle: MED-THKPavilion 41.1°Culet: NoneDepth 62.4%

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 31
Current: $5,428 USD|Low: $950 USD|High: $5,500 USD|Avg: $2,652 USD
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
Retailer 14
November 1, 2026
Retailer 2$950 USD
Retailer 8$1,638 USD
Retailer 12$1,783 USD
Retailer 13$1,834 USD
Retailer 6$1,840 USD
Retailer 4$1,851 USD
Retailer 9$1,901 USD
Retailer 14$2,070 USD
Retailer 3$2,553 USD
Retailer 10$2,988 USD
Retailer 7$3,277 USD
Retailer 11$3,562 USD
MOH London$5,428 USD
Retailer 5$5,442 USD

17 data points across 14 retailers

11 retailers$950 USD to $5,428 USD

A
Cheapest Retailer
-
$950 USD
B+
Retailer 2
-
$1,638 USD
View
B+
Retailer 3
-
$1,783 USD
View
B+
Retailer 4
-
$1,834 USD
View
Final sale: no returns
Retailer 5
-
$1,901 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$1,901 USD
View
B+
Retailer 7
-
$2,070 USD
View
B
Retailer 8
-
$2,988 USD
View
B
Retailer 9
-
$3,277 USD
View
B
Retailer 10
-
$3,562 USD
View
Most Expensive
B
MOH London
LG447000120 · Nov 1
$5,428 USD
£4,274 GBP
View
10 more retailers have this diamond
Prices start from $950 USDSave up to $4,478 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
$950 USD