Radiant|Lab Grown|IGI

1.01ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG591396148

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

Certificate IGI LG591396148

Diamond specifications and retailer prices

From $140 USD
As of October 30, 2026
Save $863 USD (86%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,003 USD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.01ct lab-grown radiant diamond

This 1.01ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591396148 or 591396148. Listed at 19 retailers as of October 30, 2026, with prices from $140 to $1,003, a $863 spread on the same certified stone. Reve Diamonds lists it at $1,003. 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

1.01
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591396148
Dimensions7.19 × 4.89 × 3.21 mm
L/W Ratio1.47
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
7.19 mm4.89 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591396148
Side View
Table 65.0%Crown 40.3°Girdle: Slightly ThickPavilionCulet: NoneDepth 65.6%

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 30
Current: $297 USD|Low: $135 USD|High: $822 USD|Avg: $395 USD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 11$140 USD
Retailer 4$157 USD
Retailer 13$174 USD
Retailer 5$238 USD
Retailer 1$297 USD
Retailer 9$321 USD
Retailer 7$330 USD
Retailer 3$419 USD
Retailer 10$443 USD
Retailer 2$559 USD
Retailer 8$565 USD
Retailer 12$640 USD
Retailer 6$817 USD

44 data points across 13 retailers

19 retailers$140 USD to $1,003 USD

A
Cheapest Retailer
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$140 USD
A
Retailer 2
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$157 USD
View
Final sale: no returns
A
Retailer 3
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$163 USD
View
A
Retailer 4
-
$174 USD
View
A
Retailer 5
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$174 USD
View
B+
Retailer 6
-
$238 USD
View
A
Retailer 7
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$297 USD
£234 GBP
View
A
Retailer 8
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$318 USD
View
A
Retailer 9
-
$321 USD
€306 EUR
View
A
Retailer 10
-
$330 USD
£260 GBP
View
B+
Retailer 11
-
$419 USD
View
B+
Retailer 12
-
$443 USD
View
B+
Retailer 13
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$482 USD
£380 GBP
View
B+
Retailer 14
-
$559 USD
View
Retailer 15
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$565 USD
View
Price last confirmed 9 days ago
B
Retailer 16
-
$614 USD
View
B
Retailer 17
-
$640 USD
View
B
Retailer 18
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$817 USD
£643 GBP
View
Most Expensive
B
Reve Diamonds
86AE2B38E · Oct 30
$1,003 USD
View
18 more retailers have this diamond
Prices start from $140 USDSave up to $863 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
1.01ct Radiant
$140 USD