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Oval|Lab Grown|IGI

1.30ct H SI1 Oval Lab Grown Diamond

GD • H/SI1 • IGI LG451056277

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451056277

Diamond specifications and retailer prices

From $734 USD
As of November 1, 2026
Save $2,611 USD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,345 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.3ct lab-grown oval diamond

This 1.3ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG451056277 or 451056277. Listed at 11 retailers as of November 1, 2026, with prices from $734 to $3,345, a $2,611 spread on the same certified stone. MOH London lists it at $3,345. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.30
Carat
H
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
Crown angle35.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056277
Dimensions8.93 × 6.07 × 3.77 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.93 mm6.07 mm1.30 ctH / SI1
OriginLab Grown
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG451056277
Side View
Table 58.5%Crown 35.7°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

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: Nov 1
Current: $3,345 USD|Low: $734 USD|High: $3,390 USD|Avg: $1,568 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$734 USD
Retailer 2$740 USD
Retailer 8$822 USD
Retailer 6$852 USD
Retailer 3$1,030 USD
Retailer 9$1,345 USD
Retailer 7$1,382 USD
Retailer 4$2,098 USD
Retailer 10$2,440 USD
MOH London$3,345 USD

21 data points across 10 retailers

11 retailers$734 USD to $3,345 USD

B+
Cheapest Retailer
-
$734 USD
B+
Retailer 2
-
$740 USD
View
B
Retailer 3
-
$799 USD
View
B
Retailer 4
-
$822 USD
View
Final sale: no returns
Retailer 5
-
$852 USD
View
Price last confirmed 21 days ago
B
Retailer 6
-
$852 USD
View
B
Retailer 7
-
$1,030 USD
View
C
Retailer 8
-
$1,382 USD
View
C
Retailer 9
-
$2,098 USD
View
C
Retailer 10
-
$2,395 USD
View
Most Expensive
C
MOH London
LG451056277 · Nov 1
$3,345 USD
£2,634 GBP
View
10 more retailers have this diamond
Prices start from $734 USDSave up to $2,611 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+
1.30ct Oval
$734 USD