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Round|Lab Grown|IGI

1.15ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG445039317

Shape and cutting style on the report: Round brilliant

Certificate IGI LG445039317

Diamond specifications and retailer prices

From $660 USD
As of November 5, 2026
Save $3,536 USD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,196 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.15ct lab-grown round diamond

This 1.15ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445039317 or 445039317. Listed at 13 retailers as of November 5, 2026, with prices from $660 to $4,196, a $3,536 spread on the same certified stone. MOH London lists it at $4,196. 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

1.15
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445039317
Dimensions6.77 × 6.78 × 4.10 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.77 mm6.78 mm1.15 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445039317
Side View
Table 59.5%Crown 31.4°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.5%

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: $4,196 USD|Low: $660 USD|High: $4,265 USD|Avg: $1,755 USD|-0.3%
MOH London
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
November 6, 2026
Retailer 8$660 USD
Retailer 9$1,070 USD
Retailer 14$1,164 USD
Retailer 13$1,198 USD
Retailer 10$1,241 USD
Retailer 12$1,241 USD
Retailer 4$1,415 USD
Retailer 7$1,423 USD
Retailer 5$1,772 USD
Retailer 11$1,977 USD
Retailer 2$2,110 USD
Retailer 3$2,326 USD
Retailer 6$2,517 USD
MOH London$4,196 USD

43 data points across 14 retailers

13 retailers$660 USD to $4,196 USD

A
Cheapest Retailer
-
$660 USD
B+
Retailer 2
-
$1,070 USD
View
B+
Retailer 3
-
$1,164 USD
View
B+
Retailer 4
-
$1,198 USD
View
Final sale: no returns
Retailer 5
-
$1,241 USD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$1,241 USD
View
B+
Retailer 7
-
$1,415 USD
View
B+
Retailer 8
-
$1,423 USD
View
B
Retailer 9
-
$1,977 USD
View
B
Retailer 10
-
$2,110 USD
View
B
Retailer 11
-
$2,326 USD
View
B
Retailer 12
-
$2,517 USD
View
Most Expensive
B
MOH London
LG445039317 · Nov 5
$4,196 USD
£3,304 GBP
View
12 more retailers have this diamond
Prices start from $660 USDSave up to $3,536 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
1.15ct Round
$660 USD