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1.51ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG12310704

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12310704

Diamond specifications and retailer prices

From $327 USD
As of November 1, 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 November 2, 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 LG12310704 or 12310704. Listed at 19 retailers as of November 1, 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 angle36°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12310704
Dimensions7.30 × 7.33 × 4.51 mm
L/W Ratio1.00
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
7.30 mm7.33 mm1.51 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12310704
Side View
Table 61.0%Crown 36°Girdle: MED-UNDPavilion 41°Culet: NoneDepth 61.6%

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: Nov 1
Current: $2,910 USD|Low: $327 USD|High: $2,910 USD|Avg: $972 USD|+0.3%
Do Amore Diamonds
Retailer 2
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Retailer 19
November 2, 2026
Retailer 19$327 USD
Retailer 16$380 USD
Retailer 13$400 USD
Retailer 6$406 USD
Retailer 14$406 USD
Retailer 3$467 USD
Retailer 7$560 USD
Retailer 8$665 USD
Retailer 10$698 USD
Retailer 2$723 USD
Retailer 17$738 USD
Retailer 11$807 USD
Retailer 18$1,190 USD
Retailer 9$1,220 USD
Retailer 12$1,270 USD
Retailer 5$1,440 USD
Retailer 4$1,597 USD
Retailer 15$1,753 USD
Do Amore Diamonds$2,910 USD

16 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
Retailer 5
-
$406 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$467 USD
View
A
Retailer 7
-
$560 USD
View
Retailer 8
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$665 USD
View
Price last confirmed 12 days ago
A
Retailer 9
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$698 USD
View
A
Retailer 10
-
$723 USD
£569 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
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$1,270 USD
View
B+
Retailer 16
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$1,440 USD
View
B+
Retailer 17
-
$1,597 USD
View
B+
Retailer 18
-
$1,753 USD
£1,380 GBP
View
Most Expensive
B
Do Amore Diamonds
27-03AD89E5C · Nov 2
$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