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Oval|Lab Grown|IGI

1.27ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG447000617

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447000617

Diamond specifications and retailer prices

From $641 USD
As of October 29, 2026
Save $2,510 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,151 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.27ct lab-grown oval diamond

This 1.27ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447000617 or 447000617. Listed at 11 retailers as of October 29, 2026, with prices from $641 to $3,151, a $2,510 spread on the same certified stone. MOH London lists it at $3,151. 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
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447000617
Dimensions8.41 × 6.19 × 3.86 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.41 mm6.19 mm1.27 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG447000617
Side View
Table 60.0%Crown 35.5°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,151 USD|Low: $616 USD|High: $3,172 USD|Avg: $1,319 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
Retailer 12
Retailer 13
October 30, 2026
Retailer 8$641 USD
Retailer 12$698 USD
Retailer 13$718 USD
Retailer 3$744 USD
Retailer 9$744 USD
Retailer 7$920 USD
Retailer 2$1,132 USD
Retailer 4$1,209 USD
Retailer 10$1,215 USD
Retailer 6$1,901 USD
Retailer 11$2,092 USD
Retailer 5$2,131 USD
MOH London$3,151 USD

36 data points across 13 retailers

11 retailers$641 USD to $3,151 USD

B+
Cheapest Retailer
-
$641 USD
B+
Retailer 2
-
$698 USD
View
B+
Retailer 3
-
$718 USD
View
Final sale: no returns
Retailer 4
-
$744 USD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
$744 USD
View
B+
Retailer 6
-
$920 USD
View
B
Retailer 7
-
$1,132 USD
£891 GBP
View
B
Retailer 8
-
$1,215 USD
View
B
Retailer 9
-
$1,901 USD
View
B
Retailer 10
-
$2,092 USD
View
Most Expensive
B
MOH London
LG447000617 · Oct 29
$3,151 USD
£2,481 GBP
View
10 more retailers have this diamond
Prices start from $641 USDSave up to $2,510 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.

B+
1.27ct Oval
$641 USD