CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

VG • E/SI1 • IGI LG12201310

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12201310

Diamond specifications and retailer prices

From $594 NZD
As of November 5, 2026
Save $2,580 NZD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,174 NZD at MOH London · As of November 3, 2026
View at MOH London

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 very-good cut grade and certified by IGI LG12201310 or 12201310. Listed at 18 retailers as of November 3, 2026, with prices from $594 to $3,174, a $2,580 spread on the same certified stone. MOH London lists it at $3,174. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12201310
Dimensions7.17 × 7.20 × 4.65 mm
L/W Ratio1.00
Culet sizeNone
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
7.17 mm7.20 mm1.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12201310
Side View
Table 57.5%Crown 36.5°Girdle: STK-UNDPavilion 41.3°Culet: NoneDepth 64.7%

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: Nov 5
Current: $3,174 NZD|Low: $594 NZD|High: $3,185 NZD|Avg: $1,570 NZD|-0.4%
MOH London
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 3$594 NZD
Retailer 4$635 NZD
Retailer 16$688 NZD
Retailer 7$736 NZD
Retailer 15$736 NZD
Retailer 14$751 NZD
Retailer 8$1,005 NZD
Retailer 12$1,169 NZD
Retailer 17$1,325 NZD
Retailer 11$1,391 NZD
Retailer 2$1,446 NZD
Retailer 10$1,491 NZD
Retailer 18$2,158 NZD
Retailer 9$2,321 NZD
Retailer 13$2,597 NZD
Retailer 6$2,611 NZD
Retailer 5$2,889 NZD
MOH London$3,174 NZD

21 data points across 18 retailers

18 retailers$594 NZD to $3,174 NZD

A
Cheapest Retailer
-
$594 NZD
A
Retailer 2
-
$635 NZD
View
A
Retailer 3
-
$688 NZD
View
Retailer 4
-
$736 NZD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$736 NZD
View
B+
Retailer 6
-
$751 NZD
View
B+
Retailer 7
-
$1,005 NZD
View
B+
Retailer 8
-
$1,169 NZD
View
B
Retailer 9
-
$1,325 NZD
View
B+
Retailer 10
-
$1,391 NZD
View
B
Retailer 11
-
$1,446 NZD
View
B
Retailer 12
-
$1,491 NZD
View
B
Retailer 13
-
$2,158 NZD
View
B
Retailer 14
-
$2,321 NZD
View
B
Retailer 15
-
$2,597 NZD
View
B
Retailer 16
-
$2,611 NZD
View
B
Retailer 17
-
$2,889 NZD
View
Most Expensive
B
MOH London
LG12201310 · Nov 3
$3,174 NZD
£1,405 GBP
View
17 more retailers have this diamond
Prices start from $594 NZDSave up to $2,580 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
$594 NZD