Oval|Lab Grown|IGI

1.74ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG445039678

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445039678

Diamond specifications and retailer prices

From $870 USD
As of October 31, 2026
Save $1,932 USD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,829 USD at MOH London · As of October 21, 2026
View at MOH London

About this 1.74ct lab-grown oval diamond

This 1.74ct 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 LG445039678 or 445039678. Listed at 12 retailers as of October 31, 2026, with a 222% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.74
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445039678
Dimensions9.73 × 6.86 × 4.21 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.73 mm6.86 mm1.74 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445039678
Side View
Table 59.5%Crown 33.9°Girdle: MED-THKPavilion 41.7°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $4,829 USD|Low: $870 USD|High: $4,867 USD|Avg: $2,201 USD|+0.6%
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 8$870 USD
Retailer 7$1,289 USD
Retailer 12$1,402 USD
Retailer 13$1,442 USD
Retailer 9$1,495 USD
Retailer 14$1,495 USD
Retailer 3$1,665 USD
Retailer 2$2,045 USD
Retailer 5$2,072 USD
Retailer 10$2,366 USD
Retailer 4$2,786 USD
Retailer 11$2,802 USD
Retailer 6$4,280 USD
MOH London$4,829 USD

38 data points across 14 retailers

12 retailers$870 USD to $2,802 USD

A
Cheapest Retailer
-
$870 USD
A
Retailer 2
-
$1,289 USD
View
A
Retailer 3
-
$1,402 USD
View
A
Retailer 4
-
$1,442 USD
View
Final sale: no returns
Retailer 5
-
$1,495 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
$1,495 USD
View
B+
Retailer 7
-
$1,665 USD
View
B+
Retailer 8
-
$2,045 USD
£1,611 GBP
View
B+
Retailer 9
-
$2,366 USD
View
B
Retailer 10
-
$2,786 USD
View
B
Retailer 11
-
$2,802 USD
View
Most Expensive
MOH London
LG445039678 · Oct 21
$4,829 USD
£3,802 GBP
View
Price last confirmed 11 days ago
11 more retailers have this diamond
Prices start from $870 USDSave up to $1,932 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
1.74ct Oval
$870 USD