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Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG749570981

Shape and cutting style on the report: Round brilliant

Certificate IGI LG749570981

Diamond specifications and retailer prices

From $234 USD
As of November 5, 2026
Save $1,068 USD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,302 USD at Reve Diamonds · As of November 4, 2026
View at Reve 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG749570981 or 749570981. Listed at 21 retailers as of November 4, 2026, with prices from $234 to $1,302, a $1,068 spread on the same certified stone. Reve Diamonds lists it at $1,302. 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG749570981
Dimensions7.32 × 7.30 × 4.61 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.32 mm7.30 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG749570981
Side View
Table 57.0%Crown 34.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.1%

Caratlytics Score

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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 5
Current: $540 USD|Low: $232 USD|High: $1,302 USD|Avg: $633 USD|+4.2%
Retailer 1
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
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Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Reve Diamonds
November 6, 2026
Retailer 8$234 USD
Retailer 15$262 USD
Retailer 16$271 USD
Retailer 3$290 USD
Retailer 4$290 USD
Retailer 10$449 USD
Retailer 17$451 USD
Retailer 5$491 USD
Retailer 1$540 USD
Retailer 2$542 USD
Retailer 14$544 USD
Retailer 12$760 USD
Retailer 9$932 USD
Retailer 13$935 USD
Retailer 7$984 USD
Retailer 11$1,159 USD
Retailer 6$1,220 USD
Reve Diamonds$1,302 USD

33 data points across 18 retailers

21 retailers$234 USD to $1,302 USD

A
Cheapest Retailer
-
$234 USD
A
Retailer 2
-
$262 USD
View
Final sale: no returns
A
Retailer 3
-
$271 USD
View
Retailer 4
-
$290 USD
View
Price last confirmed 12 days ago
A
Retailer 5
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$290 USD
View
A
Retailer 6
-
$449 USD
View
A
Retailer 7
-
$451 USD
View
B+
Retailer 8
-
$491 USD
View
B+
Retailer 9
-
$540 USD
View
B+
Retailer 10
-
$542 USD
View
B+
Retailer 11
-
$544 USD
View
B
Retailer 12
-
$760 USD
View
B+
Retailer 13
-
$770 USD
View
Retailer 14
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$794 USD
View
Price last confirmed 68 days ago
Retailer 15
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$924 USD
View
Price last confirmed 46 days ago
B
Retailer 16
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$932 USD
View
B
Retailer 17
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$935 USD
View
B
Retailer 18
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$984 USD
View
B
Retailer 19
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$1,159 USD
View
B
Retailer 20
-
$1,220 USD
View
Most Expensive
B
Reve Diamonds
721BB40CF · Nov 4
$1,302 USD
View
20 more retailers have this diamond
Prices start from $234 USDSave up to $1,068 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
$234 USD