Radiant|Lab Grown|IGI

1.00ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG786681221

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

Certificate IGI LG786681221

Diamond specifications and retailer prices

From $137 USD
As of November 6, 2026
Save $1,275 USD (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,412 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct 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 LG786681221 or 786681221. Listed at 13 retailers as of November 5, 2026, with prices from $137 to $1,412, a $1,275 spread on the same certified stone. MOH London lists it at $1,412. 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

1.00
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786681221
Dimensions7.51 × 4.85 × 3.16 mm
L/W Ratio1.55
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.51 mm4.85 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786681221
Side View
Table 65.0%Crown 37.5°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 65.2%

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: Nov 6
Current: $1,412 USD|Low: $130 USD|High: $1,424 USD|Avg: $422 USD|+0.9%
MOH London
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
November 6, 2026
Retailer 13$137 USD
Retailer 9$159 USD
Retailer 4$170 USD
Retailer 5$171 USD
Retailer 2$285 USD
Retailer 11$311 USD
Retailer 6$313 USD
Retailer 14$317 USD
Retailer 3$322 USD
Retailer 12$415 USD
Retailer 7$435 USD
Retailer 8$545 USD
Retailer 10$576 USD
MOH London$1,412 USD

45 data points across 14 retailers

13 retailers$137 USD to $1,412 USD

A
Cheapest Retailer
-
$137 USD
A
Retailer 2
-
$159 USD
View
A
Retailer 3
-
$170 USD
View
Retailer 4
-
$171 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$285 USD
View
A
Retailer 6
-
$311 USD
View
A
Retailer 7
-
$317 USD
View
A
Retailer 8
-
$322 USD
View
B+
Retailer 9
-
$415 USD
View
B+
Retailer 10
-
$435 USD
View
B+
Retailer 11
-
$545 USD
View
B
Retailer 12
-
$576 USD
View
Most Expensive
B
MOH London
LG786681221 · Nov 5
$1,412 USD
£1,112 GBP
View
12 more retailers have this diamond
Prices start from $137 USDSave up to $1,275 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
1.00ct Radiant
$137 USD