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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 €140 EUR
$156 USD
As of October 30, 2026
Save €803 EUR (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €943 EUR 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 €140 to €943, a €803 spread on the same certified stone. Reve Diamonds lists it at €943. 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: €301 EUR|Low: €88 EUR|High: €820 EUR|Avg: €314 EUR|+0.6%
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 31, 2026
Retailer 5€88 EUR
Retailer 13€140 EUR
Retailer 3€156 EUR
Retailer 11€174 EUR
Retailer 14€174 EUR
Retailer 4€235 EUR
Retailer 6€289 EUR
Retailer 1€301 EUR
Retailer 7€301 EUR
Retailer 10€329 EUR
Retailer 2€391 EUR
Retailer 12€447 EUR
Retailer 9€582 EUR
Retailer 8€815 EUR

41 data points across 14 retailers

21 retailers€140 EUR to €943 EUR

A
Cheapest Retailer
-
€140 EUR
$156 USD
Retailer 2
-
€140 EUR
$156 USD
View
Price last confirmed 23 days ago
Retailer 3
-
€140 EUR
$156 USD
View
Price last confirmed 15 days ago
Retailer 4
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€140 EUR
$156 USD
View
Price last confirmed 10 days ago
A
Retailer 5
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€156 EUR
$174 USD
View
Final sale: no returns
Retailer 6
-
€162 EUR
$181 USD
View
Price last confirmed 7 days ago
Retailer 7
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€171 EUR
$191 USD
View
Price last confirmed 37 days ago
A
Retailer 8
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€174 EUR
$194 USD
View
Retailer 9
-
€174 EUR
$194 USD
View
Price last confirmed 29 days ago
B+
Retailer 10
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€235 EUR
$262 USD
View
A
Retailer 11
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€289 EUR
$323 USD
View
A
Retailer 12
-
€301 EUR
View
A
Retailer 13
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€301 EUR
£265 GBP
View
A
Retailer 14
-
€329 EUR
£290 GBP
View
B+
Retailer 15
-
€391 EUR
$437 USD
View
B+
Retailer 16
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€447 EUR
$499 USD
View
Retailer 17
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€557 EUR
$622 USD
View
Price last confirmed 31 days ago
B
Retailer 18
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€582 EUR
$650 USD
View
B
Retailer 19
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€606 EUR
$677 USD
View
B
Retailer 20
-
€815 EUR
£717 GBP
View
Most Expensive
B
Reve Diamonds
8613479D5 · Oct 30
€943 EUR
$1,054 USD
View
20 more retailers have this diamond
Prices start from €140 EURSave up to €803 EUR

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 EUR