Radiant|Lab Grown|IGI

1.01ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG778628708

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

Certificate IGI LG778628708

Diamond specifications and retailer prices

From $156 USD
As of October 30, 2026
Save $898 USD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,054 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 LG778628708 or 778628708. Listed at 21 retailers as of October 30, 2026, with prices from $156 to $1,054, a $898 spread on the same certified stone. Reve Diamonds lists it at $1,054. 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 angle27.3°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778628708
Dimensions6.24 × 4.97 × 3.55 mm
L/W Ratio1.26
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.24 mm4.97 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778628708
Side View
Table 69.0%Crown 27.3°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 71.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $339 USD|Low: $98 USD|High: $916 USD|Avg: $350 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
Retailer 14
October 30, 2026
Retailer 5$98 USD
Retailer 13$156 USD
Retailer 3$174 USD
Retailer 10$194 USD
Retailer 14$194 USD
Retailer 4$262 USD
Retailer 6$323 USD
Retailer 1$339 USD
Retailer 11$349 USD
Retailer 9$368 USD
Retailer 2$437 USD
Retailer 12$499 USD
Retailer 8$650 USD
Retailer 7$911 USD

42 data points across 14 retailers

21 retailers$156 USD to $1,054 USD

A
Cheapest Retailer
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$156 USD
Retailer 2
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$156 USD
View
Price last confirmed 22 days ago
Retailer 3
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$156 USD
View
Price last confirmed 13 days ago
Retailer 4
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$156 USD
View
Price last confirmed 8 days ago
A
Retailer 5
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$174 USD
View
Final sale: no returns
A
Retailer 6
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$181 USD
View
Retailer 7
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$191 USD
View
Price last confirmed 35 days ago
A
Retailer 8
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$194 USD
View
Retailer 9
-
$194 USD
View
Price last confirmed 27 days ago
B+
Retailer 10
-
$262 USD
View
A
Retailer 11
-
$323 USD
View
A
Retailer 12
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$339 USD
£267 GBP
View
Retailer 13
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$349 USD
€332 EUR
View
Price last confirmed 7 days ago
A
Retailer 14
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$368 USD
£290 GBP
View
B+
Retailer 15
-
$437 USD
View
B+
Retailer 16
-
$499 USD
View
Retailer 17
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$622 USD
View
Price last confirmed 29 days ago
B
Retailer 18
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$650 USD
View
B
Retailer 19
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$677 USD
View
B
Retailer 20
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$911 USD
£717 GBP
View
Most Expensive
B
Reve Diamonds
8613479D5 · Oct 30
$1,054 USD
View
20 more retailers have this diamond
Prices start from $156 USDSave up to $898 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
$156 USD