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Oval|Lab Grown|IGI

1.51ct K SI1 Oval Lab Grown Diamond

ID • K/SI1 • IGI LG445036744

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445036744

Diamond specifications and retailer prices

From $1,654 NZD
As of November 5, 2026
Save $4,852 NZD (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,506 NZD at MOH London · As of November 3, 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 LG445036744 or 445036744. Listed at 10 retailers as of November 3, 2026, with prices from $1,654 to $6,506, a $4,852 spread on the same certified stone. MOH London lists it at $6,506. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445036744
Dimensions8.75 × 6.52 × 4.07 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.75 mm6.52 mm1.51 ctK / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG445036744
Side View
Table 61.0%Crown 36.5°Girdle: STK-THKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,506 NZD|Low: $1,587 NZD|High: $6,593 NZD|Avg: $3,480 NZD
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$6,506 NZD

31 data points across 11 retailers

10 retailers$1,654 NZD to $6,506 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
B
MOH London
LG445036744 · Nov 3
$6,506 NZD
£2,840 GBP
View
9 more retailers have this diamond
Prices start from $1,654 NZDSave up to $4,852 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