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Oval|Lab Grown|IGI

1.51ct K SI1 Oval Lab Grown Diamond

ID • K/SI1 • IGI LG436044497

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436044497

Diamond specifications and retailer prices

From $1,654 NZD
As of November 5, 2026
Save $3,739 NZD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,541 NZD at MOH London · As of October 29, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436044497 or 436044497. Listed at 10 retailers as of November 5, 2026, with a 226% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.4°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436044497
Dimensions8.65 × 6.52 × 4.16 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.65 mm6.52 mm1.51 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436044497
Side View
Table 55.0%Crown 35.4°Girdle: UNDPavilion 41.3°Culet: NoneDepth 63.8%

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: $6,541 NZD|Low: $1,587 NZD|High: $6,584 NZD|Avg: $3,479 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$1,654 NZD
Retailer 10$1,800 NZD
Retailer 7$1,919 NZD
Retailer 4$2,237 NZD
Retailer 2$2,666 NZD
Retailer 11$2,836 NZD
Retailer 8$3,074 NZD
Retailer 5$4,268 NZD
Retailer 9$5,394 NZD
Retailer 3$5,493 NZD
MOH London$6,541 NZD

29 data points across 11 retailers

10 retailers$1,654 NZD to $5,394 NZD

A
Cheapest Retailer
-
$1,654 NZD
A
Retailer 2
-
$1,800 NZD
View
Retailer 3
-
$1,919 NZD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$1,919 NZD
View
B+
Retailer 5
-
$2,237 NZD
View
B+
Retailer 6
-
$2,666 NZD
View
B+
Retailer 7
-
$3,074 NZD
View
B
Retailer 8
-
$4,268 NZD
View
B
Retailer 9
-
$5,394 NZD
View
Most Expensive
MOH London
LG436044497 · Oct 29
$6,541 NZD
£2,855 GBP
View
Price last confirmed 8 days ago
9 more retailers have this diamond
Prices start from $1,654 NZDSave up to $3,739 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
$1,654 NZD