CaratHunter
Plans
Oval|Lab Grown|IGI

1.51ct K SI1 Oval Lab Grown Diamond

ID • K/SI1 • IGI LG436073489

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436073489

Diamond specifications and retailer prices

From $1,654 NZD
As of November 5, 2026
Save $4,836 NZD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,490 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073489 or 436073489. Listed at 9 retailers as of November 5, 2026, with prices from $1,654 to $6,490, a $4,836 spread on the same certified stone. MOH London lists it at $6,490. 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
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073489
Dimensions9.01 × 6.61 × 4.03 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
9.01 mm6.61 mm1.51 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436073489
Side View
Table 56.5%Crown 34.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

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 5
Current: $6,490 NZD|Low: $1,587 NZD|High: $6,584 NZD|Avg: $3,527 NZD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 4$1,654 NZD
Retailer 8$1,800 NZD
Retailer 5$1,919 NZD
Retailer 2$2,237 NZD
Retailer 9$2,836 NZD
Retailer 6$3,074 NZD
Retailer 3$4,268 NZD
Retailer 7$5,394 NZD
Retailer 10$5,493 NZD
MOH London$6,490 NZD

19 data points across 10 retailers

9 retailers$1,654 NZD to $6,490 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
A
Retailer 4
-
$1,919 NZD
View
A
Retailer 5
-
$2,237 NZD
View
B+
Retailer 6
-
$3,074 NZD
View
B
Retailer 7
-
$4,268 NZD
View
B
Retailer 8
-
$5,394 NZD
View
Most Expensive
B
MOH London
LG436073489 · Nov 5
$6,490 NZD
£2,833 GBP
View
8 more retailers have this diamond
Prices start from $1,654 NZDSave up to $4,836 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