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Round|Lab Grown|IGI

1.51ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG455006167

Shape and cutting style on the report: Round brilliant

Certificate IGI LG455006167

Diamond specifications and retailer prices

From $327 USD
As of October 29, 2026
Save $2,583 USD (89%) vs most expensive(unlock to see where)
19 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 LG455006167 or 455006167. Listed at 19 retailers as of October 29, 2026, with prices from $327 to $2,910, a $2,583 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG455006167
Dimensions7.31 × 7.37 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa.
Top View
7.31 mm7.37 mm1.51 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG455006167
Side View
Table 58.5%Crown 35.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.3%

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: Oct 29
Current: $2,910 USD|Low: $327 USD|High: $2,910 USD|Avg: $966 USD|+0.3%
Do Amore Diamonds
Retailer 2
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Retailer 19
October 30, 2026
Retailer 19$327 USD
Retailer 16$380 USD
Retailer 2$400 USD
Retailer 6$406 USD
Retailer 15$406 USD
Retailer 3$467 USD
Retailer 7$560 USD
Retailer 8$665 USD
Retailer 10$698 USD
Retailer 12$725 USD
Retailer 17$738 USD
Retailer 11$807 USD
Retailer 18$1,190 USD
Retailer 9$1,220 USD
Retailer 14$1,250 USD
Retailer 5$1,440 USD
Retailer 4$1,597 USD
Retailer 13$1,759 USD
Do Amore Diamonds$2,910 USD

14 data points across 19 retailers

19 retailers$327 USD to $2,910 USD

A
Cheapest Retailer
-
$327 USD
A
Retailer 2
-
$380 USD
View
B+
Retailer 3
-
$400 USD
View
A
Retailer 4
-
$406 USD
View
A
Retailer 5
-
$406 USD
View
A
Retailer 6
-
$467 USD
View
A
Retailer 7
-
$560 USD
View
Retailer 8
-
$665 USD
View
Price last confirmed 10 days ago
A
Retailer 9
-
$698 USD
View
A
Retailer 10
-
$725 USD
£571 GBP
View
A
Retailer 11
-
$738 USD
View
A
Retailer 12
-
$807 USD
View
A
Retailer 13
-
$1,190 USD
View
A
Retailer 14
-
$1,220 USD
View
B+
Retailer 15
-
$1,250 USD
View
B+
Retailer 16
-
$1,440 USD
View
B+
Retailer 17
-
$1,597 USD
View
B+
Retailer 18
-
$1,759 USD
£1,385 GBP
View
Most Expensive
B
Do Amore Diamonds
27-52299484A · Oct 31
$2,910 USD
View
18 more retailers have this diamond
Prices start from $327 USDSave up to $2,583 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
$327 USD