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1.51ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG494167199

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494167199

Diamond specifications and retailer prices

From $400 USD
As of October 30, 2026
Save $2,510 USD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,910 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG494167199 or 494167199. Listed at 12 retailers as of October 30, 2026, with prices from $400 to $2,910, a $2,510 spread on the same certified stone. Do Amore Diamonds lists it at $2,910. 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
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494167199
Dimensions7.35 × 7.38 × 4.55 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.35 mm7.38 mm1.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494167199
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

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: Oct 30
Current: $2,910 USD|Low: $400 USD|High: $2,910 USD|Avg: $1,074 USD|+0.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 5$400 USD
Retailer 9$467 USD
Retailer 11$560 USD
Retailer 3$698 USD
Retailer 6$725 USD
Retailer 2$770 USD
Retailer 4$807 USD
Retailer 8$1,190 USD
Retailer 12$1,220 USD
Retailer 10$1,597 USD
Retailer 7$1,753 USD
Do Amore Diamonds$2,910 USD

14 data points across 12 retailers

12 retailers$400 USD to $2,910 USD

B+
Cheapest Retailer
-
$400 USD
A
Retailer 2
-
$467 USD
View
A
Retailer 3
-
$560 USD
View
A
Retailer 4
-
$698 USD
View
A
Retailer 5
-
$725 USD
£571 GBP
View
A
Retailer 6
-
$770 USD
View
A
Retailer 7
-
$807 USD
View
A
Retailer 8
-
$1,190 USD
View
A
Retailer 9
-
$1,220 USD
View
B+
Retailer 10
-
$1,597 USD
View
B+
Retailer 11
-
$1,753 USD
£1,380 GBP
View
Most Expensive
B
Do Amore Diamonds
27-4CC7EC046 · Oct 31
$2,910 USD
View
11 more retailers have this diamond
Prices start from $400 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.

A
1.51ct Round
$400 USD