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Round|Lab Grown|IGI

1.03ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG487174439

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487174439

Diamond specifications and retailer prices

From $600 USD
As of October 30, 2026
Save $3,700 USD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,300 USD at MOH London · As of October 29, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG487174439 or 487174439. Listed at 12 retailers as of October 29, 2026, with prices from $600 to $4,300, a $3,700 spread on the same certified stone. MOH London lists it at $4,300. 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487174439
Dimensions6.42 × 6.45 × 4.04 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.42 mm6.45 mm1.03 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487174439
Side View
Table 58.5%Crown 35.7°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,300 USD|Low: $600 USD|High: $4,328 USD|Avg: $1,908 USD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$600 USD
Retailer 5$1,148 USD
Retailer 9$1,285 USD
Retailer 6$1,331 USD
Retailer 8$1,331 USD
Retailer 10$1,505 USD
Retailer 11$1,877 USD
Retailer 7$2,115 USD
Retailer 4$2,281 USD
Retailer 3$2,623 USD
MOH London$4,300 USD

17 data points across 11 retailers

12 retailers$600 USD to $4,300 USD

A
Cheapest Retailer
-
$600 USD
B+
Retailer 2
-
$1,148 USD
View
B+
Retailer 3
-
$1,248 USD
View
B+
Retailer 4
-
$1,285 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,331 USD
View
Retailer 6
-
$1,331 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$1,505 USD
View
B
Retailer 8
-
$2,115 USD
View
B
Retailer 9
-
$2,281 USD
€2,172 EUR
View
B
Retailer 10
-
$2,495 USD
View
B
Retailer 11
-
$2,623 USD
View
Most Expensive
B
MOH London
LG487174439 · Oct 29
$4,300 USD
£3,386 GBP
View
11 more retailers have this diamond
Prices start from $600 USDSave up to $3,700 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
$600 USD