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Oval|Lab Grown|IGI

1.87ct K SI2 Oval Lab Grown Diamond

ID • K/SI2 • IGI LG451058154

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451058154

Diamond specifications and retailer prices

From $3,819 NZD
As of November 5, 2026
Save $8,165 NZD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $11,984 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.87ct lab-grown oval diamond

This 1.87ct lab-grown oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451058154 or 451058154. Listed at 8 retailers as of November 5, 2026, with prices from $3,819 to $11,984, a $8,165 spread on the same certified stone. MOH London lists it at $11,984. 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

1.87
Carat
K
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451058154
Dimensions9.50 × 6.98 × 4.35 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Top View
9.50 mm6.98 mm1.87 ctK / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451058154
Side View
Table 61.0%Crown 35.7°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $11,984 NZD|Low: $3,666 NZD|High: $12,176 NZD|Avg: $6,736 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$3,819 NZD
Retailer 7$4,154 NZD
Retailer 4$4,429 NZD
Retailer 8$5,632 NZD
Retailer 6$6,088 NZD
Retailer 5$6,922 NZD
Retailer 2$7,104 NZD
Retailer 9$9,912 NZD
MOH London$11,984 NZD

16 data points across 9 retailers

8 retailers$3,819 NZD to $11,984 NZD

B+
Cheapest Retailer
-
$3,819 NZD
B+
Retailer 2
-
$4,154 NZD
View
Retailer 3
-
$4,429 NZD
View
Price last confirmed 26 days ago
B
Retailer 4
-
$4,429 NZD
View
B
Retailer 5
-
$6,088 NZD
View
B
Retailer 6
-
$6,922 NZD
View
B
Retailer 7
-
$7,104 NZD
View
Most Expensive
B
MOH London
LG451058154 · Nov 5
$11,984 NZD
£5,231 GBP
View
7 more retailers have this diamond
Prices start from $3,819 NZDSave up to $8,165 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.

B+
1.87ct Oval
$3,819 NZD