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Radiant|Lab Grown|IGI

1.03ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG492135837

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

Certificate IGI LG492135837

Diamond specifications and retailer prices

From $140 USD
As of November 4, 2026
Save $1,200 USD (90%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $1,340 USD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1.03ct lab-grown radiant diamond

This 1.03ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG492135837 or 492135837. Listed at 27 retailers as of November 6, 2026, with prices from $140 to $1,340, a $1,200 spread on the same certified stone. Do Amore Diamonds lists it at $1,340. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492135837
Dimensions7.35 × 4.96 × 3.33 mm
L/W Ratio1.48
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
7.35 mm4.96 mm1.03 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492135837
Side View
Table 59.5%Crown 35.3°Girdle: ThickPavilion 33.2°Culet: NoneDepth 67.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $332 USD|Low: $140 USD|High: $1,020 USD|Avg: $434 USD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$140 USD
Retailer 11$157 USD
Retailer 10$272 USD
Retailer 1$332 USD
Retailer 7$337 USD
Retailer 6$364 USD
Retailer 3$389 USD
Retailer 2$420 USD
Retailer 8$590 USD
Retailer 5$640 USD
Retailer 4$894 USD

44 data points across 11 retailers

27 retailers$140 USD to $1,340 USD

A
Cheapest Retailer
-
$140 USD
Retailer 2
-
$140 USD
View
Price last confirmed 30 days ago
Retailer 3
-
$140 USD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$140 USD
View
A
Retailer 5
-
$157 USD
View
Final sale: no returns
Retailer 6
-
$163 USD
View
Price last confirmed 41 days ago
Retailer 7
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$171 USD
View
Price last confirmed 39 days ago
Retailer 8
-
$174 USD
View
Price last confirmed 35 days ago
A
Retailer 9
-
$256 USD
View
B+
Retailer 10
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$272 USD
View
A
Retailer 11
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$294 USD
View
A
Retailer 12
-
$332 USD
View
A
Retailer 13
-
$337 USD
View
A
Retailer 14
-
$364 USD
View
B+
Retailer 15
-
$389 USD
View
B+
Retailer 16
-
$420 USD
View
B
Retailer 17
-
$590 USD
View
B
Retailer 18
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$591 USD
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B
Retailer 19
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$616 USD
View
Retailer 20
-
$616 USD
View
Price last confirmed 28 days ago
Retailer 21
-
$616 USD
View
Price last confirmed 38 days ago
B
Retailer 22
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$616 USD
View
B
Retailer 23
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$640 USD
View
B
Retailer 24
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$721 USD
View
B
Retailer 25
-
$790 USD
View
B
Retailer 26
-
$894 USD
View
Most Expensive
B
Do Amore Diamonds
27-085836A3E · Nov 6
$1,340 USD
View
26 more retailers have this diamond
Prices start from $140 USDSave up to $1,200 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
1.03ct Radiant
$140 USD