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2.51ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG485161697

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485161697

Diamond specifications and retailer prices

From $3,890 NZD
As of November 5, 2026
Save $8,354 NZD (68%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,245 NZD at MOH London · As of November 3, 2026
View at MOH London

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485161697 or 485161697. Listed at 9 retailers as of November 3, 2026, with prices from $3,890 to $12,245, a $8,354 spread on the same certified stone. MOH London lists it at $12,245. 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

2.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485161697
Dimensions8.89 × 8.91 × 5.21 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.89 mm8.91 mm2.51 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485161697
Side View
Table 61.5%Crown 31.9°GirdlePavilion 40.7°Culet: NoneDepth 58.6%

Caratlytics Score

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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: $12,245 NZD|Low: $3,890 NZD|High: $12,410 NZD|Avg: $6,984 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4$3,890 NZD
Retailer 5$4,513 NZD
Retailer 2$4,803 NZD
Retailer 7$5,767 NZD
Retailer 6$7,052 NZD
Retailer 3$7,075 NZD
MOH London$12,245 NZD

18 data points across 7 retailers

9 retailers$3,890 NZD to $12,245 NZD

A
Cheapest Retailer
-
$3,890 NZD
B+
Retailer 2
-
$4,234 NZD
View
B+
Retailer 3
-
$4,513 NZD
View
Retailer 4
-
$4,513 NZD
View
Price last confirmed 26 days ago
B+
Retailer 5
-
$4,803 NZD
View
B
Retailer 6
-
$6,205 NZD
View
B
Retailer 7
-
$7,052 NZD
View
B
Retailer 8
-
$7,075 NZD
View
Most Expensive
B
MOH London
LG485161697 · Nov 3
$12,245 NZD
£5,420 GBP
View
8 more retailers have this diamond
Prices start from $3,890 NZDSave up to $8,354 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
2.51ct Round
$3,890 NZD