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Round|Lab Grown|IGI

1.09ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG480171497

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480171497

Diamond specifications and retailer prices

From $640 USD
As of October 30, 2026
Save $3,904 USD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,544 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct 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 LG480171497 or 480171497. Listed at 12 retailers as of October 29, 2026, with prices from $640 to $4,544, a $3,904 spread on the same certified stone. MOH London lists it at $4,544. 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

1.09
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480171497
Dimensions6.48 × 6.52 × 4.12 mm
L/W Ratio1.01
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
6.48 mm6.52 mm1.09 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG480171497
Side View
Table 55.5%Crown 36.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.4%

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: $4,544 USD|Low: $640 USD|High: $4,581 USD|Avg: $1,988 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 4$640 USD
Retailer 5$1,213 USD
Retailer 9$1,358 USD
Retailer 6$1,407 USD
Retailer 8$1,407 USD
Retailer 10$1,580 USD
Retailer 11$1,971 USD
Retailer 7$2,231 USD
Retailer 2$2,401 USD
Retailer 3$2,695 USD
MOH London$4,544 USD

21 data points across 11 retailers

12 retailers$640 USD to $4,544 USD

A
Cheapest Retailer
-
$640 USD
B+
Retailer 2
-
$1,213 USD
View
B+
Retailer 3
-
$1,319 USD
View
B+
Retailer 4
-
$1,358 USD
View
Final sale: no returns
Retailer 5
-
$1,407 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$1,407 USD
View
B
Retailer 7
-
$1,580 USD
View
B
Retailer 8
-
$2,231 USD
View
B
Retailer 9
-
$2,401 USD
€2,287 EUR
View
B
Retailer 10
-
$2,637 USD
View
B
Retailer 11
-
$2,695 USD
View
Most Expensive
B
MOH London
LG480171497 · Oct 29
$4,544 USD
£3,578 GBP
View
11 more retailers have this diamond
Prices start from $640 USDSave up to $3,904 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
1.09ct Round
$640 USD