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Round|Lab Grown|IGI

1.51ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG442066850

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442066850

Diamond specifications and retailer prices

From $840 USD
As of November 5, 2026
Save $4,265 USD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,105 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG442066850 or 442066850. Listed at 12 retailers as of November 5, 2026, with prices from $840 to $5,105, a $4,265 spread on the same certified stone. MOH London lists it at $5,105. 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

1.51
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442066850
Dimensions7.28 × 7.26 × 4.58 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.28 mm7.26 mm1.51 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442066850
Side View
Table 55.5%Crown 36.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.9%

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: Nov 5
Current: $5,105 USD|Low: $840 USD|High: $5,182 USD|Avg: $2,210 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 5, 2026
Retailer 7$840 USD
Retailer 8$1,374 USD
Retailer 12$1,494 USD
Retailer 11$1,538 USD
Retailer 9$1,593 USD
Retailer 14$1,593 USD
Retailer 3$1,765 USD
Retailer 6$1,845 USD
Retailer 5$2,180 USD
Retailer 10$2,517 USD
Retailer 2$2,864 USD
Retailer 4$2,970 USD
Retailer 13$2,987 USD
MOH London$5,105 USD

39 data points across 14 retailers

12 retailers$840 USD to $5,105 USD

A
Cheapest Retailer
-
$840 USD
B+
Retailer 2
-
$1,374 USD
View
B+
Retailer 3
-
$1,494 USD
View
B+
Retailer 4
-
$1,538 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,593 USD
View
Retailer 6
-
$1,593 USD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
$1,765 USD
View
B
Retailer 8
-
$2,517 USD
View
B
Retailer 9
-
$2,864 USD
View
B
Retailer 10
-
$2,970 USD
View
B
Retailer 11
-
$2,987 USD
View
Most Expensive
B
MOH London
LG442066850 · Nov 5
$5,105 USD
£4,020 GBP
View
11 more retailers have this diamond
Prices start from $840 USDSave up to $4,265 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
1.51ct Round
$840 USD