Radiant|Lab Grown|IGI

1.74ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG487108318

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

Certificate IGI LG487108318

Diamond specifications and retailer prices

From $1,656 USD
As of October 27, 2026
Save $3,860 USD (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,516 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.74ct lab-grown radiant diamond

This 1.74ct 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 LG487108318 or 487108318. Listed at 10 retailers as of October 27, 2026, with prices from $1,656 to $5,516, a $3,860 spread on the same certified stone. MOH London lists it at $5,516. 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
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487108318
Dimensions7.98 × 6.03 × 4.07 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
7.98 mm6.03 mm1.74 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487108318
Side View
Table 65.5%Crown 45.2°Girdle: MED-STKPavilion 31.9°Culet: NoneDepth 67.5%

Caratlytics Score

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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 27
Current: $5,516 USD|Low: $1,590 USD|High: $5,552 USD|Avg: $2,772 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 3$1,656 USD
Retailer 4$1,840 USD
Retailer 5$1,921 USD
Retailer 8$2,090 USD
Retailer 10$2,095 USD
Retailer 9$2,579 USD
Retailer 6$3,019 USD
Retailer 2$3,312 USD
Retailer 7$3,601 USD
MOH London$5,516 USD

15 data points across 10 retailers

10 retailers$1,656 USD to $5,516 USD

A
Cheapest Retailer
-
$1,656 USD
B+
Retailer 2
-
$1,802 USD
View
B+
Retailer 3
-
$1,840 USD
View
B+
Retailer 4
-
$1,921 USD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$1,921 USD
View
B+
Retailer 6
-
$2,090 USD
View
B
Retailer 7
-
$3,019 USD
View
B
Retailer 8
-
$3,312 USD
View
B
Retailer 9
-
$3,601 USD
View
Most Expensive
B
MOH London
LG487108318 · Oct 29
$5,516 USD
£4,343 GBP
View
9 more retailers have this diamond
Prices start from $1,656 USDSave up to $3,860 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 Radiant
$1,656 USD