Radiant|Lab Grown|IGI

1.54ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1

Diamond specifications and retailer prices

From $493 USD
As of October 30, 2026
Save $1,115 USD (69%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,608 USD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1.54ct lab-grown radiant diamond

This 1.54ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 5 retailers as of October 28, 2026, with prices from $493 to $1,608, a $1,115 spread on the same certified stone. NZ Jewellers lists it at $1,608. 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

1.54
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.42 × 5.68 × 3.88 mm
L/W Ratio1.31
Top View
7.42 mm5.68 mm1.54 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: MediumPavilionCulet: NoneDepth 68.3%

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 30
Current: $1,608 USD|Low: $355 USD|High: $1,608 USD|Avg: $733 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 7$355 USD
Retailer 5$493 USD
Retailer 4$552 USD
Retailer 3$611 USD
Retailer 2$682 USD
Retailer 6$1,135 USD
NZ Jewellers$1,608 USD

39 data points across 7 retailers

5 retailers$493 USD to $1,608 USD

A
Cheapest Retailer
-
$493 USD
B+
Retailer 2
-
$552 USD
View
B+
Retailer 3
-
$611 USD
View
B+
Retailer 4
-
$682 USD
£537 GBP
View
Most Expensive
B
NZ Jewellers
1940ab90-0c08-4d6c-8aa6-403f394bc31a · Oct 28
$1,608 USD
View
4 more retailers have this diamond
Prices start from $493 USDSave up to $1,115 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
1.54ct Radiant
$493 USD