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2.55ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG485161729

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485161729

Diamond specifications and retailer prices

From $3,953 NZD
As of November 5, 2026
Save $8,453 NZD (68%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,405 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 2.55ct lab-grown round diamond

This 2.55ct 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 LG485161729 or 485161729. Listed at 9 retailers as of November 5, 2026, with prices from $3,953 to $12,405, a $8,453 spread on the same certified stone. MOH London lists it at $12,405. 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

2.55
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485161729
Dimensions8.90 × 8.96 × 5.25 mm
L/W Ratio1.01
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
8.90 mm8.96 mm2.55 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485161729
Side View
Table 59.5%Crown 31.4°GirdlePavilion 40.4°Culet: NoneDepth 58.8%

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: $12,405 NZD|Low: $3,953 NZD|High: $12,604 NZD|Avg: $7,062 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4$3,953 NZD
Retailer 5$4,584 NZD
Retailer 2$4,874 NZD
Retailer 7$5,851 NZD
Retailer 6$7,158 NZD
Retailer 3$7,185 NZD
MOH London$12,405 NZD

19 data points across 7 retailers

9 retailers$3,953 NZD to $12,405 NZD

A
Cheapest Retailer
-
$3,953 NZD
A
Retailer 2
-
$4,300 NZD
View
Retailer 3
-
$4,584 NZD
View
Price last confirmed 26 days ago
B+
Retailer 4
-
$4,584 NZD
View
B+
Retailer 5
-
$4,874 NZD
View
B
Retailer 6
-
$6,301 NZD
View
B
Retailer 7
-
$7,158 NZD
View
B
Retailer 8
-
$7,185 NZD
View
Most Expensive
B
MOH London
LG485161729 · Nov 5
$12,405 NZD
£5,491 GBP
View
8 more retailers have this diamond
Prices start from $3,953 NZDSave up to $8,453 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
2.55ct Round
$3,953 NZD