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Round|Lab Grown|IGI

1.03ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG407948751

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407948751

Diamond specifications and retailer prices

From $805 USD
As of November 5, 2026
Save $2,688 USD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,493 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407948751 or 407948751. Listed at 10 retailers as of November 5, 2026, with prices from $805 to $3,493, a $2,688 spread on the same certified stone. MOH London lists it at $3,493. 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
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407948751
Dimensions6.38 × 6.42 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.38 mm6.42 mm1.03 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407948751
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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: $3,493 USD|Low: $773 USD|High: $3,548 USD|Avg: $1,612 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 5$805 USD
Retailer 6$934 USD
Retailer 8$934 USD
Retailer 3$1,110 USD
Retailer 2$1,380 USD
Retailer 7$1,506 USD
Retailer 4$2,222 USD
MOH London$3,493 USD

32 data points across 8 retailers

10 retailers$805 USD to $3,493 USD

A
Cheapest Retailer
-
$805 USD
A
Retailer 2
-
$876 USD
View
B+
Retailer 3
-
$934 USD
View
Retailer 4
-
$934 USD
View
Price last confirmed 25 days ago
B+
Retailer 5
-
$1,110 USD
View
B+
Retailer 6
-
$1,380 USD
View
B
Retailer 7
-
$1,506 USD
View
B
Retailer 8
-
$2,222 USD
View
B
Retailer 9
-
$2,627 USD
View
Most Expensive
B
MOH London
LG407948751 · Nov 5
$3,493 USD
£2,750 GBP
View
9 more retailers have this diamond
Prices start from $805 USDSave up to $2,688 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
$805 USD