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Round|Lab Grown|IGI

1.27ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG615372660

Shape and cutting style on the report: Round brilliant

Certificate IGI LG615372660

Diamond specifications and retailer prices

From $237 USD
As of November 6, 2026
Save $817 USD (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,054 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.27ct lab-grown round diamond

This 1.27ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG615372660 or 615372660. Listed at 17 retailers as of November 1, 2026, with prices from $237 to $1,054, a $817 spread on the same certified stone. MOH London lists it at $1,054. 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

1.27
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG615372660
Dimensions6.90 × 6.87 × 4.31 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
6.90 mm6.87 mm1.27 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG615372660
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

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 6
Current: $1,054 USD|Low: $237 USD|High: $1,067 USD|Avg: $544 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$237 USD
Retailer 8$263 USD
Retailer 9$355 USD
Retailer 7$418 USD
Retailer 2$477 USD
Retailer 3$480 USD
Retailer 6$520 USD
Retailer 5$848 USD
Retailer 4$950 USD
MOH London$1,054 USD

42 data points across 10 retailers

17 retailers$237 USD to $1,054 USD

Retailer 1
-
$212 USD
Price last confirmed 45 days ago
A
Retailer 2
-
$237 USD
View
Final sale: no returns
Retailer 3
-
$246 USD
View
Price last confirmed 45 days ago
Retailer 4
-
$260 USD
View
Price last confirmed 42 days ago
B+
Retailer 5
-
$355 USD
View
A
Retailer 6
-
$418 USD
View
B+
Retailer 7
-
$477 USD
View
B+
Retailer 8
-
$480 USD
View
B+
Retailer 9
-
$520 USD
View
B
Retailer 10
-
$688 USD
View
Retailer 11
-
$845 USD
View
Price last confirmed 46 days ago
B
Retailer 12
-
$848 USD
View
B
Retailer 13
-
$854 USD
View
B
Retailer 14
-
$898 USD
View
B
Retailer 15
-
$930 USD
View
B
Retailer 16
-
$950 USD
View
Most Expensive
B
MOH London
LG615372660 · Nov 1
$1,054 USD
£830 GBP
View
16 more retailers have this diamond
Prices start from $237 USDSave up to $817 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
1.27ct Round
$237 USD