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1.51ct J SI1 Round Lab Grown Diamond

VG • J/SI1 • IGI LG442067251

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442067251

Diamond specifications and retailer prices

From $1,511 NZD
$850 USD
As of November 2, 2026
Save $6,231 NZD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,742 NZD at MOH London · As of November 1, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG442067251 or 442067251. Listed at 11 retailers as of November 1, 2026, with prices from $1,511 to $7,742, a $6,231 spread on the same certified stone. MOH London lists it at $7,742. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442067251
Dimensions7.26 × 7.22 × 4.63 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.26 mm7.22 mm1.51 ctJ / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442067251
Side View
Table 56.5%Crown 36°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 64.0%

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 2
Current: $7,742 NZD|Low: $1,511 NZD|High: $7,844 NZD|Avg: $3,490 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$1,511 NZD
Retailer 3$2,078 NZD
Retailer 6$2,326 NZD
Retailer 4$2,410 NZD
Retailer 10$2,624 NZD
Retailer 7$2,719 NZD
Retailer 9$3,423 NZD
Retailer 5$3,827 NZD
Retailer 8$4,747 NZD
MOH London$7,742 NZD

15 data points across 10 retailers

11 retailers$1,511 NZD to $7,742 NZD

A
Cheapest Retailer
-
$1,511 NZD
$850 USD
B+
Retailer 2
-
$2,078 NZD
$1,169 USD
View
B+
Retailer 3
-
$2,259 NZD
$1,271 USD
View
B+
Retailer 4
-
$2,326 NZD
$1,309 USD
View
Final sale: no returns
Retailer 5
-
$2,410 NZD
$1,356 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$2,410 NZD
$1,356 USD
View
B
Retailer 7
-
$2,719 NZD
$1,530 USD
View
B
Retailer 8
-
$3,827 NZD
$2,153 USD
View
B
Retailer 9
-
$4,516 NZD
$2,541 USD
View
B
Retailer 10
-
$4,747 NZD
$2,671 USD
View
Most Expensive
B
MOH London
LG442067251 · Nov 1
$7,742 NZD
£3,430 GBP
View
10 more retailers have this diamond
Prices start from $1,511 NZDSave up to $6,231 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
$1,511 NZD