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1.51ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG793631681

Shape and cutting style on the report: Round brilliant

Certificate IGI LG793631681

Diamond specifications and retailer prices

From $418 NZD
As of November 5, 2026
Save $1,905 NZD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,323 NZD 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG793631681 or 793631681. Listed at 21 retailers as of November 4, 2026, with prices from $418 to $2,323, a $1,905 spread on the same certified stone. Reve Diamonds lists it at $2,323. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG793631681
Dimensions7.33 × 7.28 × 4.62 mm
L/W Ratio1.01
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
7.33 mm7.28 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG793631681
Side View
Table 55.0%Crown 36°Girdle: MediumPavilion 41.2°Culet: NoneDepth 63.3%

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: $968 NZD|Low: $414 NZD|High: $2,323 NZD|Avg: $1,135 NZD|+6.5%
Retailer 1
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
Reve Diamonds
November 6, 2026
Retailer 5$418 NZD
Retailer 11$468 NZD
Retailer 12$486 NZD
Retailer 2$519 NZD
Retailer 14$519 NZD
Retailer 3$877 NZD
Retailer 13$966 NZD
Retailer 1$968 NZD
Retailer 10$975 NZD
Retailer 6$1,669 NZD
Retailer 9$1,674 NZD
Retailer 4$1,759 NZD
Retailer 7$1,939 NZD
Retailer 8$2,072 NZD
Reve Diamonds$2,323 NZD

45 data points across 15 retailers

21 retailers$418 NZD to $2,323 NZD

Retailer 1
-
$414 NZD
Price last confirmed 45 days ago
A
Retailer 2
-
$418 NZD
View
A
Retailer 3
-
$468 NZD
View
Final sale: no returns
A
Retailer 4
-
$486 NZD
View
Retailer 5
-
$507 NZD
View
Price last confirmed 45 days ago
Retailer 6
-
$519 NZD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$519 NZD
View
A
Retailer 8
-
$774 NZD
View
B+
Retailer 9
-
$877 NZD
View
B+
Retailer 10
-
$966 NZD
View
B+
Retailer 11
-
$968 NZD
View
B+
Retailer 12
-
$975 NZD
View
B+
Retailer 13
-
$1,384 NZD
View
Retailer 14
-
$1,654 NZD
View
Price last confirmed 46 days ago
B
Retailer 15
-
$1,669 NZD
View
B
Retailer 16
-
$1,674 NZD
View
B
Retailer 17
-
$1,759 NZD
View
B
Retailer 18
-
$1,850 NZD
View
B
Retailer 19
-
$1,939 NZD
View
B
Retailer 20
-
$2,072 NZD
View
Most Expensive
B
Reve Diamonds
956C4DEDD · Nov 4
$2,323 NZD
$1,306 USD
View
20 more retailers have this diamond
Prices start from $418 NZDSave up to $1,905 NZD

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
$418 NZD