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Round|Lab Grown|IGI

1.03ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG771645848

Shape and cutting style on the report: Round brilliant

Certificate IGI LG771645848

Diamond specifications and retailer prices

From $146 USD
As of November 5, 2026
Save $875 USD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,021 USD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round 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 LG771645848 or 771645848. Listed at 22 retailers as of November 4, 2026, with prices from $146 to $1,021, a $875 spread on the same certified stone. Reve Diamonds lists it at $1,021. 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

1.03
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771645848
Dimensions6.47 × 6.43 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.47 mm6.43 mm1.03 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771645848
Side View
Table 57.0%Crown 35.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
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 5
Current: $308 USD|Low: $145 USD|High: $1,021 USD|Avg: $411 USD|+6.6%
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
Retailer 15
Retailer 16
Reve Diamonds
November 6, 2026
Retailer 6$146 USD
Retailer 14$162 USD
Retailer 15$169 USD
Retailer 2$181 USD
Retailer 4$181 USD
Retailer 1$308 USD
Retailer 3$335 USD
Retailer 11$354 USD
Retailer 13$405 USD
Retailer 16$426 USD
Retailer 8$447 USD
Retailer 7$581 USD
Retailer 10$614 USD
Retailer 5$636 USD
Retailer 12$650 USD
Retailer 9$843 USD
Reve Diamonds$1,021 USD

44 data points across 17 retailers

22 retailers$146 USD to $1,021 USD

Retailer 1
-
$145 USD
Price last confirmed 45 days ago
A
Retailer 2
-
$146 USD
View
A
Retailer 3
-
$162 USD
View
Final sale: no returns
A
Retailer 4
-
$169 USD
View
Retailer 5
-
$177 USD
View
Price last confirmed 45 days ago
Retailer 6
-
$181 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$181 USD
View
A
Retailer 8
-
$286 USD
View
A
Retailer 9
-
$308 USD
View
B+
Retailer 10
-
$335 USD
View
B+
Retailer 11
-
$354 USD
View
B+
Retailer 12
-
$405 USD
View
B+
Retailer 13
-
$426 USD
View
B+
Retailer 14
-
$447 USD
View
B+
Retailer 15
-
$486 USD
View
Retailer 16
-
$577 USD
View
Price last confirmed 46 days ago
B
Retailer 17
-
$581 USD
View
B
Retailer 18
-
$614 USD
View
B
Retailer 19
-
$636 USD
View
B
Retailer 20
-
$650 USD
View
B
Retailer 21
-
$843 USD
View
Most Expensive
B
Reve Diamonds
4B809246D · Nov 4
$1,021 USD
View
21 more retailers have this diamond
Prices start from $146 USDSave up to $875 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 Round
$146 USD