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Oval|Lab Grown|IGI

1.51ct H SI1 Oval Lab Grown Diamond

ID • H/SI1 • IGI LG436072868

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436072868

Diamond specifications and retailer prices

From $1,678 NZD
As of November 6, 2026
Save $6,911 NZD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,589 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval 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 LG436072868 or 436072868. Listed at 12 retailers as of November 5, 2026, with prices from $1,678 to $8,589, a $6,911 spread on the same certified stone. MOH London lists it at $8,589. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436072868
Dimensions8.78 × 6.54 × 4.07 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.78 mm6.54 mm1.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436072868
Side View
Table 60.0%Crown 35.3°Girdle: STK-THKPavilion 40.7°Culet: NoneDepth 62.2%

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 6
Current: $8,589 NZD|Low: $1,678 NZD|High: $8,726 NZD|Avg: $4,342 NZD|-1.3%
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
November 6, 2026
Retailer 8$1,678 NZD
Retailer 7$2,599 NZD
Retailer 12$2,829 NZD
Retailer 13$2,910 NZD
Retailer 9$3,016 NZD
Retailer 14$3,016 NZD
Retailer 4$3,328 NZD
Retailer 5$4,100 NZD
Retailer 2$4,228 NZD
Retailer 10$4,757 NZD
Retailer 3$5,473 NZD
Retailer 11$5,652 NZD
MOH London$8,589 NZD
Retailer 6$8,632 NZD

40 data points across 14 retailers

12 retailers$1,678 NZD to $8,589 NZD

A
Cheapest Retailer
-
$1,678 NZD
B+
Retailer 2
-
$2,599 NZD
View
B+
Retailer 3
-
$2,829 NZD
View
B+
Retailer 4
-
$2,910 NZD
View
Final sale: no returns
Retailer 5
-
$3,016 NZD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$3,016 NZD
View
B
Retailer 7
-
$3,328 NZD
View
B
Retailer 8
-
$4,228 NZD
View
B
Retailer 9
-
$4,757 NZD
View
B
Retailer 10
-
$5,473 NZD
View
B
Retailer 11
-
$5,652 NZD
View
Most Expensive
B
MOH London
LG436072868 · Nov 5
$8,589 NZD
£3,749 GBP
View
11 more retailers have this diamond
Prices start from $1,678 NZDSave up to $6,911 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 Oval
$1,678 NZD